Dell U2711 and U3011 with 15khz Amiga 500 NTSC signals

 

I have a Dell U2711 and a U3011 and they are very similar so the same goes for both monitors.

 

My A500 NTSC with a buffered VGA adapter: regular 640x200 is ugly and dim, looks like macrovision (some kind of automatic gain problem), interlaced 640x400 looks ok but kinda fuzzy, not sharp

A500 NTSC with buffered VGA --> RGBS to YPbPr --> ypbpr cable to VGA --> VGA input: regular 640x200 will not display properly, something is shown but it's like a venetian blind and it's stretched vertically, interlaced 640x400 looks ok but fuzzy as before (You can send YPbPr signals to the VGA port because the monitor supports Sync on Green)

A500 NTSC with buffered VGA --> RGBS to YPbPr -> component input: 640x200 will have the weird venetian blind effect, 640x400 looks beautiful, sharp, deinterlaced properly and nice.

A500 NTSC mono composite out --> Y component input: same as component, only monochrome: 640x200 weird venetian blind, 640x400 is beautiful but monochrome

The U2711 has a composite input (which is missing on the U3011) and you can run the A500 NTSC mono composite out --> composite input and 640x200 and 640x400 both look really nice but monochrome.

It's really a darn shame that monitor manufacturers don't test for 15khz signals because I believe that any modern monitor lcd controller can display 15khz if they want to support it.

Sync on Green and a500 ntsc composite out with a Dell E2414

 So I had a cable that takes VGA and connects the RGB lines to component RCA jack outputs which is supposed to be used for projectors that take YPbPr input using the VGA port.  It's just a passive cable.

Some dell monitors have the option to choose between RGB color and YPbPr, so I hooked the component output from the RGBS to YPbPr adapter to the VGA input of the Dell E2414.

 

A500 NTSC buffered VGA adapter --> RGBS to YPbPr adapter --> component to VGA cable --> Dell E2414 VGA input.

 

It displayed the image just fine, and after I switched the color to YPbPr.

So this got me thinking, isn't the A500 mono composite out basically like the Y channel?

I hooked up the A500 monochrome composite video output to the Y component jack and the Dell E2414 displayed it just fine.  I believe that it's because it supports SOG Sync on Green.

Switching to YPbPr colors makes the screen black and white, and selecting RGB colors makes it green (which makes sense because only the green Y is hooked up).

Getting rid of Amiga 500 15khz banding on monitors that do clock=100

Some monitors can do an "auto-adjust" and then won't be able to remove the banding by manually adjusting the pixel clock.

I noticed that after an auto-adjust that the pixel clock setting is "reset" to 50.

So what if I try to send the monitor a different signal that's close to the 15khz Amiga 500 NTSC signal and let it auto adjust on that to reset the midrange to 50, then manually adjust the pixel clock.

Using my cvt script called "mycvt" I hook up the VGA to my eeepc 901 and try a few resolutions.

I try   ./mycvt 720 240 (which the monitor says it out of range)

./mycvt 820 240 (still out of range)

./mycvt 920 240 (monitor will lock on)

 

$ cvt 920 240
# 920x240 58.05 Hz (CVT) hsync: 14.86 kHz; pclk: 17.00 MHz
Modeline "920x240_60.00"   17.00  920 944 1032 1144  240 243 253 256 -hsync +vsync

Then after auto adjusting to 920x240, which resets the pixel clock to "50", switch the VGA input back to the amiga output and then I can manually adjust the pixel clock from the new "50" point to remove the banding.

I've tried this with a couple of (clk=100) monitors that I got recently, an HP 27wm, an Asus B246HL and an Asus VA24D and it worked!

Now I just have to be careful not to hit the auto adjust button!

It doesn't work for all monitors, the Gateway Kx2303 and the Acer H276HL seem to make a distinction between the different signals, remembering the settings for each.

edit: after a lot of experimentation, the Acer H276HL can lock onto "cvt 1440 245 61", the Lenovo LT2252 can lock onto "cvt 824 245 61".  That seems to be close enough for the monitor to treat it as the same resolution.

That 245 and 61 seems to be a magic number, a little bit higher at 246 and a little bit lower at 244 won't work.  The 61 pulls it closer to 60 hz.

cvt 1440 245 61
# 1440x245 59.87 Hz (CVT) hsync: 15.62 kHz; pclk: 28.00 MHz
Modeline "1440x245_61.00"   28.00  1440 1480 1616 1792  245 248 258 261 -hsync +vsync

So here's some pictures:

So first, let's set a workbench pattern which makes the vertical banding easier to see.

Asus B246HL after auto adjusting on Amiga 500 NTSC signal on a buffered VGA adapter: the banding is clearly visible

boosting the clock to 100, there are still multiple bands

switching to an Asus EEEpc running knoppix 9.1 and running mycvt 920 240

we run the auto adjust, then switch back to the amiga 500 NTSC

now you can set the clock to eliminate all of the vertical banding

 

Asus B246HL from January 2017

Using an iogear vga switch box (powered by usb) makes it easy to switch back and forth between an EEEpc and the Amiga 500 NTSC.

Mycvt script:

#/bin/bash
if [ $# -eq 1 ]
then
echo one parameter given, set device to $1
declare -x d=$1
printenv d
#no, child cannot modify env vars of parent but you can run it as source ./mycvt and it will work
#. ./mycvt VGA1 will also work as . is an alias for source
else
echo $*
cvt $*
echo d = $d
if [ -z "$d" ]
then
  d=VGA1
  echo no device specified, using $d
fi
a=`cvt $* | tail -1 | cut -d' ' -f2-`
b=`cvt $* | tail -1 | cut -d' ' -f2`
echo $a 
echo $b
echo xrandr --newmode $a
echo xrandr --addmode $d $b
echo xrandr --output $d --mode $b
xrandr --newmode $a
xrandr --addmode $d $b
xrandr --output $d --mode $b
fi

 

 

 

 

Dell E170Sb 15khz and Amiga 500 NTSC

Found a Dell E170Sb (manufactured March 2012) that would display 15khz Amiga 500 NTSC signals on a buffered VGA adapter.

This LCD monitor has a 4:3 aspect ratio.

 Setting pixel clock to 92 will eliminate all of the banding.

 

edit: I have come across a REV A00 E170Sb that wouldn't display a 15 khz signal, (It was made in 2009), so maybe it's REV A01 that work.

15khz Monitors that don't work with Amiga 500 NTSC and buffered VGA adapter

 

=====

Here's a list of monitors that I have found that WILL NOT WORK with a buffered VGA adapter and an Amiga 500 ntsc:

3M DMS 710 Projector (input not supported on a500 ntsc, will work on component with rgbs/vga to ypbpr adapter but picture slightly unstable)

Acer P206HL (doesn't work with 15khz tester)

Acer V226HQL (doesn't work with 15khz tester)

Acer V246HQL (doesn't work with a500 ntsc)

Acer V203HL  (doesn't work with a500 ntsc)

Acer A231H (doesn't work with a500 ntsc)

AOC e2460 (doesn't work with a500 ntsc)
AOC 2036S (doesn't work with a500 ntsc) 

AOC 416Va (doesn't work with 15khz tester)

Asus VE278H (doesn't work with 15khz tester)

Asus VE247 (doesn't work with 15khz tester)

Asus VW246 (doesn't work with 15khz tester)

Asus VS197 (doesn't work with a500 ntsc) 

Asus VS228 (doesn't work with 15khz tester)

Asus VS238H (doesn't work with 15khz tester)

Asus VS247H-P (doesn't work with 15khz tester) 

Asus VX238H (doesn't work with 15khz tester)

Benq XL2730Z (doesn't work with a500 ntsc, monitor says Cable not connected)

Benq GW2765 (doesn't work with a500 ntsc) 

Dell U2412Mb (doesn't work with a500 ntsc, I have two of these and neither works)

Dell E193FP  (doesn't work with 15khz tester)

Dell E1913c   (doesn't work with 15khz tester)

Dell E2014H  (doesn't work with 15khz tester)

Dell E2020H (doesn't work with 15khz tester)

Dell E2011H (doesn't work with 15khz tester)

Dell E2210 (doesn't work with 15khz tester)

Dell E2216HV (doesn't work with 15khz tester) 

Dell E2211Hc (doesn't work with 15khz tester) 

Dell E2213c (doesn't work with a500 ntsc, note that the E2213Hb does work)

Dell P2213f (doesn't work with a500 ntsc)

Dell E2715 (doesn't work with 15khz tester)

Dell E2318H (doesn't work with 15khz tester)

Dell 1907FPt (doesn't work with a500 ntsc)

Dell 1908FP (doesn't work with 15khz tester) 

Dell P1913S (doesn't work with 15khz tester) 

Dell P1914S (doesn't work with 15khz tester) 

Dell P2014H  (doesn't work with 15khz tester) 

Dell P2211Ht  (doesn't work with 15khz tester)  

Dell P2311H (doesn't work with a500 ntsc) 

Dell P2312Ht  (doesn't work with 15khz tester) 

Dell P2319  (doesn't work with a500 ntsc) 

Dell P2217H (doesn't work with a500 ntsc) 

Dell P2317H (doesn't work with 15khz tester) 

Dell P2418Ht (doesn't work with a500 ntsc) 

Dell P2419H (doesn't work with 15khz tester) (I have since found a couple of P2419H that do work, so maybe it depends on the unit)

Dell P2411Hb (doesn't work with 15khz tester) 

Dell 2407FP (doesn't work with a500 ntsc on VGA input, component video supports Amiga 500 ntsc with RGBS/VGA to YPbPr adapter)

Dell 2408FP (doesn't work with a500 ntsc on VGA input, component video supports Amiga 500 ntsc with RGBS/VGA to YPbPr adapter)

Dell S2240M (will work with a500 interlace but not normal non interlace 15khz)

Dell 2007FP (VGA Amiga 15khz unsupported, but has a composite input that will 

display a500 monochrome composite video out)

Dell SE2417HG   (doesn't work with 15khz tester)

Dell SE2419HX   (doesn't work with 15khz tester)

Dell SE2422HX SE2422Hb   (doesn't work with 15khz tester)

Dell SP2208WPf  (doesn't work with 15khz tester)

Dell P2213 (only interlace mode works and jittery, non interlace not supported) 

Dell E1909W (doesn't work with a500 ntsc)

Dell U3011 (non interlace looks very dark, like macrovision. However, it will display interlaced fine, but image is soft. It detects non-interlace NTSC as 720x288@60 and displays garbage at the bottom. If you set the colors to YPbPr you can actually see the screen but the colors are all wrong. It detects interlace as 480i. The same pattern is repeated on the Component input: dark colors on non-interlace but interlace is fine but soft.)

Dell U2713Hm (doesn't work with 15khz tester) 

Dell IN2010 (doesn't work with 15khz tester)

Eizo Flexscan EV2456 (doesn't work with a500 ntsc) 

Gateway FPD2185W (get a decent a500 screen display with VGA but colors are completely wrong) 

Hanns-G HH241 (doesn't work with a500 ntsc)

HP EliteDisplay E221 (doesn't work with 15khz tester)

HP EliteDisplay E231 (doesn't work with 15khz tester) 

HP w2207 (doesn't work with 15khz tester)

HP w2071d (doesn't work with a500 ntsc)

HP V21 (doesn't work with a500 ntsc) 

HP V222vb (will show the 15.7 khz screen, with an overlay that says out of range and the screen will shut off in 30s, pressing the button gives another 30s)

HP VH240a (doesn't work with 15khz tester)

HP 2509m (doesn't work with a500 ntsc)

HP LP2465 (doesn't work with a500 ntsc)

HP w2408 (doesn't work with a500 ntsc on vga input)

LG E2241V-BN (doesn't work with a500 ntsc)

LG Flatron IPS234W (doesn't work with 15khz tester) 

NEC Multisync LCD1850E (doesn't work with a500 ntsc)  

Samsung S22E450D (doesn't work with 15khz tester) 

Samsung S24E450D (doesn't work with a500 ntsc)

Samsung S27E450D (doesn't work with a500 ntsc)

Samsung C27F391FHN (doesn't work with a500 ntsc)

Samsung E1920X (doesn't work with a500 ntsc)

Samsung 173T (doesn't work with a500 ntsc)

Samsung Syncmaster 2253LW (doesn't work with 15khz tester)

Viewsonic VA2012 (doesn't work with 15khz tester)

Viewsonic VA2246M-LED (doesn't work with 15khz tester)

Viewsonie VA2446M-LED (doesn't work with 15khz tester) 

Viewsonic VA2248M-LED (doesn't work with 15khz tester)

Viewsonic VA2448M-LED (doesn't work with 15khz tester)

Viewsonic VX2250 (doesn't work with 15khz tester)

Viewsonic VX2433 (doesn't work with 15khz tester)

Viewsonic VX2450WM-LED  (doesn't work with 15khz tester)

Viewsonic PJ503D Projector (will display 15khz non interlaced Amiga but clips off right 15% of screen with no way to adjust, interlace displays scrambled, will display a500 composite video with no issues) 

 

I'll update this page as I find my various notes and test different monitors.

 

Lenovo LT2252p wide and Amiga 500 NTSC VGA

 I got a Lenovo LT2252p wide and tried it with an Amiga 500 NTSC with a buffered VGA adapter.  It looks great in 640x200 and displays 640x400 interlace fine with some jitter.

However, it has a strange behavior when switching back from interlace workbench 640x400 to non-interlace 640x200.  The screen display goes black and won't come back on.  The monitor's on, with the green power LED, just no screen display.

Turning the monitor on and off with the power button doesn't bring the screen back.  

Unplugging/replugging the VGA doesn't bring the screen back.  

Unplugging/replugging the power doesn't bring the screen back.

What did bring the screen back?  resetting the amiga with ctrl+Amiga+Amiga or launching DeluxePaint3 and using dpaint3 to switch modes.  

Oddly, once you've got a dpaint non-interlace screen paired with an interlaced workbench, there's no problem switching screens.

Other than that bizarre blank screen behavior, it works fine.  Go figure.

Amiga 500 with a 4 port VGA splitter

So I have an Amiga 500 with a buffered VGA adapter, will it work with a VGA splitter box?

IMAGE® 1 PC to 4 Monitors Splitter Box VGA/SVGA LCD CRT 4 Port Video

 

 

 

I got an Image 1 to 4 VGA splitter, hooked it up and it looks great!

It supposed to support 150Mhz signals and I'm sure that the Amiga 14 Mhz pixel clock is wayyy under that.

So now I can have simultaneous output to more than one monitor and also my RGBS/VGA to YPbPr adapter.

Monitors that can display Amiga 500 Interlace but not Non-Interlace 15khz

 So I was working with some interlace modes and noticed that some monitors would support an Interlaced display but not a Non-Interlace display on my Amiga 500.

The Dell P2213 will show an interlaced Amiga display but "black screen" on a non-interlaced display.

I think it has to do with the "380 line minimum" that I saw on some of the Dell monitors while working with cvt.  Interlaced modes are > 380 and Non interlace is < 380.

I tried a Dell S2415Hb with an interlaced Amiga display and while it would display it, the Auto Adjustment would keep cycling to the point it would force the monitor to shut down and reboot.  I guess that even monitors can "crash".

 

A Planar PXL2780MW will display interlace but blanks out on the non interlace.  Turning its Overdrive setting down to zero makes it flicker less, but it still has noticeable jitter.  (It will also generate some LCD afterimage that will go away after awhile)

An Asus VS197 will display 640x400 interlace with jitter (and looks blurry) but not regular 640x200.

A Dell S2240Mc will display interlace but it also has some jitter issues.

 

An Acer V246HQL will not lock onto 640x200 saying "Input not supported". However, if you switch to 640x400 interlace then turn the monitor on, it will lock on to 640x400 and then you can switch back to 640x200 and it will display properly until you change resolutions again.  The 640x200 display looks nice if you can get it to show up, but that's way too fiddly, requiring you to turn the monitor off and back on.

 

A Dell U2713HMt will not work with 640x200 saying "input not supported", but it will work with a 640x400 interlace signal with visible flicker.  The pixel clock and phase can be adjusted to remove banding.

 

Since monitors like these will  "wink out" when they get a non interlace display, I'll hook up the b/w composite out from the Amiga 500 to a TV so I can see what's happening and try to switch into an interlaced mode.

I wish there were a way to force the Amiga to always generate an interlace mode to work with monitors that only like interlaced signals.

Acer G276HL Amiga 500 NTSC VGA

 The Acer G276HL looks ok with a buffered VGA Adapter and Amiga 500 NTSC 15khz output, but if you tweak the settings you can get it near perfect.

The auto adjust doesn't give you the best image.

Setting the clock to 95 (to expand the image) and the Hposition to 18 (to shift it left) the pixel color fringing is virtually gone.

Interlace modes are still "wrong line" and look bad, but I will most likely avoid them.

Amiga 500 NTSC VGA 15khz monitor list

 

 

My personal list (Golden Child's List) of monitors that will sync to Amiga 500 NTSC 15khz signals with a buffered VGA adapter (purchased from ebay): 

 

If it says clock=100 that means that the pixel clock can't be adjusted beyond 100 to get rid of vertical banding. (in other words, even when at the clock maximum value of 100, the pixel width isn't uniform all the way across the screen)  Sadly, many monitors get really really close to removing all the banding, leaving just a few large bands.

With some monitors you must do an auto adjust before you try to adjust the pixel clock as it seems to affect the range of how much you can manually adjust.

1. Acer B226WL
2. Acer B227Q bmiprx (slightly blurry image unenhanced, the only sharpness adjustment is super-sharpness on/off, with super-sharpness on image is acceptable but still a little soft)
   
3. Acer B246HL
4. Acer R240HY
5. Acer S220HQL
6. Acer S230 bi (tested with 15khz tester only)
   
7. Acer SB220Q bi (tested with 15khz tester only) 
8. Acer SB230 Bbix (tested with 15khz tester only)
   
9. Acer G215HV Bbd (made 9/2012)
   
10. Acer G226HQL (panel has narrow viewing angle)
    
11. Acer G235H
12. Acer G245HQ Abd (tested with 15khz tester, auto adjust puts screen up halfway, can be adjusted with controls)
    
13. Acer G246HL Abd
    
14. Acer G276HL
15. Acer H226HQL bid (tested with 15khz tester)
    
16. Acer H276HL
17. Acer H233H bmid (from 2010, adjusting horizontal clock or activating auto adjust will make image unstable (horizontal jittering) until you either powercycle or cycle the monitor input from VGA to HDMI and back to VGA)
18. Acer K202HQL Abi (2020) (works with 15khz tester)
    
19. Acer K222HQL bd (2015) (works with 15khz tester) 
20. Acer K243Y Hbi (Mar 2023) (works with 15khz tester)
    
21. Acer KA240H bd (2018) (works with 15khz tester)
22. Acer KA242Y Ebi (works with 15khz tester)
    
23. Acer KA272 bi (2020) (works with 15khz tester) 
24. Acer T232HL bmidz (tested with 15khz tester)
25. Acer V195WL bd (2014) (works with 15khz tester)
    
26. Acer V196HQL Ab (panel has narrow viewing angle)
27. Acer V196WL b  (hpos=22,vpos=64,clock=94 perfect)
28. Acer V196L b (also V196L bd) (tested with 15khz tester) (5:4 aspect ratio screen)
    
29. Acer V203H Cjbd
30. Acer V206HQL (tested with 15khz tester)
    
31. Acer V226WL (tested with 15khz tester) 
32. Acer V246HYL Cbi (tested with 15khz tester)
    
33. Acer VG240Y bmiix
34. Acer VG270 bmiix
    
35. Acer X203H bd (May 2009) auto adjust leaves screen halfway up, can adjust vpos to correct position)
36. Acer (Gateway KX2303, manufactured by Acer but branded Gateway, clk=100)
37. Asus VA24D (clk=100, sharp=100)
    
38. Asus VA24EHE Eye Care (clk=100, sharp=100)
    
39. Asus VE208N (clk=96 phase=36 pos=13h/53v)
    
40. Asus VE228
41. Asus VE248H (2017)
42. Asus VE248Q (works with 15khz tester)
43. Asus VG245H (works with 15khz tester)
    
44. Asus VH238H (mine made in Jan 2011) (clk=93 phase=90 pos=13h/53v) (warning: I have also found some Asus VH238H-P that does not work with a 15khz tester, so maybe not all Asus VH238 work.)
45. Asus VS248P (Asus VS248H-P) (scenery mode, sharpness=80, hpos=16, vpos=56, phase=84, clock=90, perfect image, ASCR off, with ASCR on the red sector intro on great giana sisters causes backlight to go out) (I have two units, Sep 2013 and June 2020)
46. Asus VS278Q (clock=93, phase=50, pos=12h/63v)
47. Asus VW246H (tested with 15khz tester only)
48. Asus PA248Q
    
49. Asus PA249Q ProArt (april 2013) (clock=92 for no banding) (Aspect is either full screen or 720x240 miniature 1:1 pixel)
50. Benq MP720p Projector
    
51. Benq RL2460-B / RL2460HT (works with 15khz tester)
    
52. Benq RL2755-B (OSD info says RL2755T) (clock=94, phase=40 for no banding.  Has many, many options for aspect ratio and screen sizing from 1:1 720x240 pixels, 4:3 17" + 19", 5:4 19", 16:10 19" + 22", 16:9 23" + 24" )
    
53. Benq GL2450-B/RL2455HM (clock=93)
    
54. Dell 2001FP (tested with 15khz tester) (does not remember horizontal position, gets shifted to right and must use OSD controls every time monitor is turned on or signal changes/computer reboot, this can get annoying quickly.  Changing input makes VGA colors funny, have to power cycle to reset. Interestingly, if I switch to an active DVI signal, then switch back to VGA the VGA colors will look right.)
    
55. Dell E170Sb (manufactured March 2012, 4:3 monitor, clk=92, phase=72, perfect)(REV A01)  (found a REV A00 E170Sb that doesn't work)
    
56. Dell E2010H (wants to auto adjust on power on)
    
57. Dell P2210
58. Dell ST2210b
59. Dell ST2220Lc (tested with 15khz tester) (manufactured July 2012) 
    
60. Dell ST2321Lf (tested with 15khz tester) (Feb 2011)
    
61. Dell ST2410b (wants to auto adjust upon Amiga boot/reset)
62. Dell ST2420Lb (tested with 15khz tester)
    
63. Dell ST2421Lb
    
64. Dell P2310
    
65. Dell U2410 (auto adjust works well, manually changing the phase/clock will make the screen will go wonky, cycle inputs to return to normal, zoom to 15 will fill the screen)
66. Dell U2311b (tested with 15khz tester)
    
67. Dell U2711 (tested with 15khz tester, but does not work right with real Amiga signal, non interlace 640x200 looks dark and unusable (some kind of automatic gain issue), oddly 640x400 interlace looks fine.  To see anything in 640x200 you can set the color to YPbPr but colors are all wrong.  Component also hates non-interlace.  Interlace is properly deinterlaced on VGA, component and composite, but VGA deinterlace has a soft appearance).  Dell U3011 has similar behavior, non interlace unusable, interlace is ok.
    
68. Dell U2212HMc (93 for pixel clock, 10 for hpos, 80 for vpos is perfect)
69. Dell U2312HM
    
70. Dell E2213Hb (note that the E2213c does not work with 15khz signals but the E2213Hb does work with 15khz signals)
    
71. Dell E2214Hb
72. Dell E2314Hf (tested with 15khz tester)
    
73. Dell P2214H
74. Dell P2314H
75. Dell E2414H
    
76. Dell P2414H
77. Dell P2714Hc
    
78. Dell E2015HVf (clock=100 can be auto adjusted with cvt 1080 246 61 and then switched to Amiga 500 clock=90)
    
79. Dell E2215HV (clock=100 max, can't get completely rid of banding, can adjust wide/4:3/5:4)
    
80. Dell SE2216HV (made July 2018) (tested with 15khz tester)
    
81. Dell SE2717H (clock=100)
82. Dell P2217
    
83. Dell P2018H (clock=100)
84. Dell S2316Mc (tested with 15khz tester)  12V 3.33a
    
85. Dell S2318Nc label also says (S2318HN/NX) (tested with 15khz tester)
86. Dell S2319Nx (tested with 15khz tester)
    
87. Dell P2219H (clock=100)
88. Dell P2419H (tested with 15khz tester)
    
89. Dell P2222H (clock=100)
    
90. Dell 1220 Projector
91. Dell 2300MP Projector (tested with 15khz tester)
    
92. Epson EX3220 Projector
93. Epson VS340 Projector
94. Epson MovieMate 30s Projector (852x480 native)
    
95. Hitachi CP-WX4021N Projector
96. Hitachi CP-X251 Projector (tested with 15khz tester)
    
97. HP Elitedisplay E231i  (this is the one with the IPS panel, the EliteDisplay E231 doesn't work)
98. HP 27wm (clk=100, pos=13/53 image a little soft, no sharpening options)
    
99. Infocus IN2114 Projector (A500 NTSC VGA non interlace looks good, interlace will sometimes do wrong line deinterlacing - if you keep hitting the auto adjust button a few times it will eventually lock in properly and interlace will look good)
    
100. Infocus IN24+ W240 Projector (tested with 15khz tester)
     
101. Infocus ScreenPlay 4805 Projector (works with non interlace on M1-DA interface with VGA/USB cable, but interlace is scrambled and unusable)
102. Ingram Micro V7 2165M  L21500WDS-9N (made Apr 2016)
103. Lenovo C24-20
     
104. Lenovo D22-10 (tested with 15khz tester only)
     
105. Lenovo T2224pD (tested with 15khz tester only)
106. Lenovo T2254pC (tested with 15khz tester only) (made 2016)
107. Lenovo T2324pA (tested with 15khz tester only)
     
108. Lenovo LT1913pA (5:4 IPS screen) (made 2015)
     
109. Lenovo LT1952pwD (tested with 15khz tester only)
     
110. Lenovo LT2252p wide (switching from interlace to non interlace can cause screen to go blank, either reset Amiga or use Dpaint 3 to change resolution to bring it back, recommend non interlace only)
111. Lenovo LT2323p wide (tested with 15khz tester only) 
112. Lenovo Thinkvision S22e-20 (tested with 15khz tester only)
     
113. NEC Accusync AS221WM (tested with 15khz tester only)
     
114. NEC LCD225WXM (july 2007) (tested with 15khz tester)
     
115. NEC Multisync E222W (tested with 15khz tester)
     
116. NEC Multisync EA241WM (detects a500 NTSC as 640x200 (completely fills screen to edges) when in non-interlace and displays as 720x480 when in 640x400 interlace (displays inset from edges)) Since image completely fills screen, can get annoying to reposition screen when it diverges from the "normal" position.
     
117. NEC Multisync EA261WM (640x200 fills screen like EA241WM, virtually identical behavior to EA241WM but 26 inches across, very heavy 27 lbs)
118. NEC MultiSync EA273WM (tested with 15khz tester, works with Amiga signals.  To get rid of banding the image will fill the screen horiz from edge to edge, and letterboxed.)
     
119. NEC VT570 Projector
120. Optoma EP749 Projector (640x400 interlace displays purple, non interlace is fine)
     
121. Planar PLL2010W (tested with 15khz tester, positioning/size is on the left half of the screen but it will show a signal)
     
122. Planar PLL2210W (hsize=76, finetune=100 for no banding pos=13/63, interlace is normal size, however switching from 640x200 to interlace makes the monitor say "out of range", power cycling with the power switch will then display an interlace screen)
     
123. Planar PLL2410W (non interlace mode ok, interlace modes are double width so right half is off screen)
124. Philips 17PF8946/37 17" LCD TV
125. Sceptre E205W (tested with 15khz tester) 
126. Sceptre E248W-19208DA8524AA (there are many similar E248W model numbers that don't work so be advised. This unit has a standard AC power plug, not requiring an AC adapter.)
     
127. Sceptre E275W
     
128. Seiki SE22HY01 Television
129. STG BNLCD001 22" Monitor Panel (2022/11/23)
     
130. Viewsonic VA2246mh-LED (note that this is a different model than the VA2246m-LED which doesn't work)
     
131. Viewsonic VA2259-smh
132. Viewsonic VA2359-SMH (2019) (tested with 15khz tester only)
     
133. Viewsonic VA2452SM-2 (2020) (tested with 15khz tester only)
134. Viewsonic VA2446MH-LED (tested with 15khz tester only)
     
135. Viewsonic VA2703-LED (auto adjust puts vertical screen position halfway up, but position/size can be manually adjusted) 
136. Viewsonic VA2746mh-LED (tested with 15khz tester only)
     
137. Viewsonic VG2239m-LED (auto adjust puts vertical screen position halfway up, but position/size can be manually adjusted)
138. Viewsonic VG2748
139. Viewsonic VG2753
140. Viewsonic VP2770-LED
     
141. Viewsonic VX2252MH  (2014-7-12) (perfect with hpos=17 vpos=57 hsize=94 finetune=75 sharpness=100 almost identical settings to VX2452MH)
142. Viewsonic VX2452MH (2020-06) (perfect with hpos=13 vpos=58 hsize=94 finetune=50 sharpness=100)
143. Viewsonic VX2703mh-LED
144. Viewsonic VX2276-SMHD
145. Viewsonic TD2220 touch display (tested with 15khz tester, works fine with PAL Amiga 15khz)
     
146. Zalman Trimon MZ240ED (when switching from interlace to non-interlace this monitor has issues. With Great Giana Sisters after the interlaced Giana Picture, monitor goes blank and doesn't come back until rebooting the Amiga.)  (Use only with non-interlace if possible).
     

One thing I've noticed is that a lot of the monitors do "wrong line" interlace display on Amiga signals. Typical interlace will either jitter or will blur lines together. The Seiki SE22HY01 Television does proper deinterlacing that looks good. Also the Dell U2410 will do a proper job with interlace.

 

It appears that many dell monitors have a SSYY pattern where SS is the diagonal size and YY is the year, and the years 2010 and 2014 were very good years as 2010 had the U2410, P2210, P2310, ST2210b and 2014 had the E2214, P2214, P2314, E2414, P2414. https://en.wikipedia.org/wiki/Dell_monitors

 

My favorite 4 brands are Acer, Asus, Dell and Viewsonic because those are the brands that I have found that have the monitors most likely to show 15khz signals. The Dells often can adjust the aspect from 4:3 to wide. Also I like monitors that will do sharpening on the image, especially on larger monitors.

 

Benq doesn't have as many monitors on my list, but they are nice in that they have very flexible options for aspect ratio as well as sharpening.

 

 

After purchasing and finding many monitors that don't work, a 15khz tester from pcbjunkiedotnet (http://pcbjunkie.net) has helped find monitors that will actually work with a 15khz signal. Search google for "15khz tester" or ebay for "vga monitor tester".

 

 

And also, your mileage may vary. Many monitors have variations: they could have different hardware revisions, could have different firmware and could have different manufacturing factories.