Questions tagged [crt-monitor]

Cathode Ray Tube monitors: principles of operation and use with computing devices. DO NOT REPAIR CRTs; SEE TAG WIKI FOR DETAILS.

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Were vertical monitor arcade games programmed differently from those with horizontal monitors?

Many classic arcade games like Pac Man (Namco 1980), Assault (Namco 1988), Mercs (Capcom 1990), etc, use a monitor oriented vertically. I assume that they used the same physical hardware, with the ...
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Performance characteristics of the DEC Type 30 graphical display

The DEC Type 30 was an early vector graphics display, that was used for an astonishingly wide range of applications for the 1960s. It used a 16-inch circular CRT with high persistence phosphor ...
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Sony PVM Connections / Composite Signale

I am trying to learn more about different video formats. I have a SONY PVM9044QM and want to understand the different connection options. So I understand, that Y/C equals S-Video input. But what does ...
retronexus's user avatar
5 votes
2 answers
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Digital to analog in an old 35mm film recorder [closed]

I'm looking at an old film recorder from 1985, the Polaroid Freeze Frame, the back of the machine pictured here: From here: https://www.radiomuseum.org/r/polaroidco_freezeframe_video_recorder.html I ...
Curiousmarble's user avatar
5 votes
2 answers
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CRT Geometry Adjustment

My Panasonic CT-20S12S (20 inches, not 12 inches) has some pretty bad geometry in various parts of the screen. The edges of lines bow in or out, distorting shapes. How can I adjust the geometry on ...
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First Commodore 80-column monitor

While the Amiga could be used with a TV in a pinch, it was primarily intended for use with an RGBA monitor; memory says, and Google seems to confirm, that was the 1084. Commodore made color monitors ...
rwallace's user avatar
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Atari SM144 Horizontal lines after turning off then on

I recently bought an Atari SM144 monochrome monitor so I could play with an old Atari ST. It works to a certain degree, it turns on all good and I can play for a while, but after some time it gives ...
user3667111's user avatar
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What is the model of the Emachines Etower 366i2's Monitor?

I've an old 1999 Emachines Etower I want to restore. I have all the original parts except for the monitor. It just isn't a complete set without it. Does anybody know the specific model of that monitor?...
aaa's user avatar
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3 answers
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Early vector computer displays: off-the-shelf oscilliscope, or custom built?

Some early computers had vector displays, which allowed the computer to draw graphics by steering a cathode-ray beam. Some examples include the Whirlwind, TX-0, TX-2, and PDP-1. It would be easy for ...
DrSheldon's user avatar
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How to use thinkpad x230 with PCjr 4863 monitor?

I understand it is probably more trouble than it is worth, but I am keen on using my 4863 IBM monitor as a second display for my x230. So far I've looked into converting its VGA signal to a CGA output,...
jayVeni's user avatar
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What was the timeline for monitors becoming immune to physical damage from invalid sync values?

When I first got into using Linux around the turn of the millennium, XFree86 was still in use, with the associated use of the xf86config command to manually set everything up, and the warning that ...
ssokolow's user avatar
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How does the Apple IIgs color compare to the Apple Macintosh color?

There has been an interesting discussion of how to convert Classic Macintosh Color to sRGB, which begs a second question. How does color on the IIgs compare to that of Classic Macintosh? I'm asking ...
Michael Shopsin's user avatar
3 votes
2 answers
749 views

IBM 5153 monitor vertical resolution

The IBM 5153, the color monitor accompanying the original IBM PC, was designed to work with the CGA graphics card, vertical resolution 200 scan lines. This was quite unsurprising and straightforward. ...
rwallace's user avatar
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1 answer
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Why does my IBM 5154 have an undulating wave?

My IBM 5154 had some blown capacitors in the power supply (the AC line filters). It worked, though I decided I should replace the caps in the power supply just to be safe. I went ahead and replaced ...
Sydius's user avatar
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3 votes
1 answer
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CRT Mitsubishi Diamond Pro 1000 black screen: flashes BIOS logo during boot, but otherwise black

I received this off eBay yesterday and the seller had showed images of it working. The CRT shows many signs of life, I hear static when it turns on, a sound when I switch resolutions, the degaussing ...
Idmi's user avatar
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1 answer
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Weird Brightness Problem On CRT

My Panasonic CT-20S12S keeps slowly getting brighter and brighter, and I keep having to take off the back and turn down the SCREEN control. What's going on here?
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2 votes
3 answers
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How were early computer monitor signals used to breach security? [duplicate]

In the mid 80's, several national news outlets showed people able to reproduce a computer's monitor's screen at least 100ft away. 1) How were early computers compromised like this? 2) Were there ...
jwzumwalt's user avatar
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Atari ST colour rendering

In the late 80's, I had an interesting incident with an Atari ST that I've never really understood. I was using some graphics software that I recall was very similar to the way Microsoft's Paint still ...
Lefty's user avatar
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2 answers
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Timeline of progressive scan CRT resolutions

In chronological order of roughly1 increasing total pixel count (world record style), please list progressive scan raster CRT monitors (not vector monitors) that were in production (not prototypes). ...
snips-n-snails's user avatar
2 votes
1 answer
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Spying on old computer monitor RF signals [closed]

In the mid 80's, several national news outlets showed people able to reproduce a computers monitors screen at least 100ft away. How were early computers compromised like this?
jwzumwalt's user avatar
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Fixing the horizontal size(width) of an old CRT monitor (Zenith ZCM 1390-E)

This is my first post. I looked around on the net for awhile and came across this board - looks to be the most competent, so here goes. I managed to get my hands on an old computer monitor from my ...
Andres Jacobsen's user avatar
2 votes
2 answers
710 views

Non-obvious compatibility of M1297 monitor

I bought an Apple IIgs recently. I didn't do my research well enough and wound up with an M1297 monitor, which of course appears to only be compatible with Macintosh IIs and such, rather than the ...
lilin's user avatar
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Does anybody have information on this tube?

I need to know if this is a color or monochrome tube. It’s in an applecolor A2M6020
help's user avatar
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0 answers
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How to adjust RGB in an old CRT monitor (Samsung SyncMaster 753s) where the on-screen controls do no have the provision?

I just love CRTs. The have used LEDs and LCDs monitors but non of them have the high quality picture which a CRT monitor produce. In CRTs the color reproduction is very nice and also the brightness ...
Abhishek Ghosh's user avatar
2 votes
0 answers
294 views

Why the exterior of PC towers and monitors used to be white in the 90's and now is black? [closed]

White got dirty pretty quick. Why would they chose that color? And why MAC still keep it but other manufacturers do not.
Jose's user avatar
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1 vote
1 answer
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Why might my CRT fry any HOT I put in it? [closed]

This CRT is a Hyundai HN-4850, sold under the brand name KTX. A while ago, I fed it a video signal at a greater frequency than it was designed to handle, and after a spell of cutting out, jerking ...
Alexandria Eliott's user avatar
1 vote
2 answers
492 views

CRT contrast issue: light grey on dark grey

This is on an IBM 5154. Dark grey next to light grey produces a white line between the two. This is noticeable on a color bar test, but is even worse in SimCity (making the text impossible to read). ...
Sydius's user avatar
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1 vote
3 answers
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High Voltage in Bell of CRT Tube?

I'm going to adjust the dynamic convergence and geometry on my CRT TV with magnets. However, my dad is very reluctant as he thinks the bell of the tube may have a high voltage current and that placing ...
user avatar
1 vote
0 answers
184 views

Monochrome CRT, words are wavy and sometimes move forward and backward, what could be the issue?

Monochrome CRT characters are not stable and rather shaking or waviness in them, sometime feel like moving forward and backward. Issue is in the high voltage power supply but what could it be, do high ...
Zain ur Rehman's user avatar
1 vote
0 answers
84 views

How can I find the specifications and manual for a JVC AV-S280ENT CRT TV? [closed]

I've just "struck gold" (in my world...) by finding an old CRT TV placed in the garbage room of my apartment complex. Didn't think that was ever gonna happen again. Anyway, as logic dictates,...
Hubner's user avatar
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1 vote
0 answers
269 views

Frozen horizontal width coil in old CRT monitor

I have an old Apple IIe CRT monitor which could use a small horizontal width adjustment. Unfortunately, as I try to rotate the hex key in the coil with a CRT adjustment tool, it doesn't want to move. ...
Joel Graff's user avatar
1 vote
0 answers
550 views

Identify Toshiba CRT

Didn't find anything with a search and need to replace the tube due to it being severely burnt in.
yanagibashi's user avatar
0 votes
1 answer
556 views

What's the name of this CRT monitor?

What's the name of this output retro gaming monitor device? The following is a still from the Netflix production of 'Bandersnatch', a 2018 interactive movie, set in Britain, mostly in the year 1984. ...
Tommy Craig's user avatar
0 votes
1 answer
784 views

Why did my CRT TV back in the day have such noisy RF picture on the NES when a same-age one does not today? [closed]

Back when the NES was current, I got one for my birthday. I connected it using the RF thingie to my cheap noname 14" CRT TV bought a couple of years earlier, in the late 1980s or 1990 or so. The ...
N. Sertich's user avatar
0 votes
1 answer
147 views

Monitor connector for C64 and ST the same?

I have a monitor (colour) that works on my Atari ST. The connector looks similar to that of my Commodore 64, but it doesn’t seem to fit. Now I don’t know if I just have to use a bit more force, or ...
ABM K's user avatar
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0 votes
1 answer
448 views

4MHz Z80 timing and PAL video generation

Im trying to get some nice colored lines on some old Z80 system synced to the PAL screen, but having some sort of a problem. First I just need to know if my facts are right. I know that on Commodore ...
Natural Number Guy's user avatar
0 votes
1 answer
304 views

A2M6020 AppleColor monitor not showing color

When I got my Apple IIc computer, it came with an A2M6020 AppleColor 13" NTSC composite monitor. However, I have not been able to get color working on it. I don’t know if it just has a monochrome ...
help's user avatar
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0 votes
1 answer
196 views

Apple II color monitor displays everything in green

I have an AppleColor composite monitor (A2M6020) that only shows green-scale. The color toggle switch on the front doesn’t change anything. I have plugged the monitor into multiple devices with the ...
help's user avatar
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0 votes
1 answer
3k views

Is there such a thing as a modern-manufactured, flat, fake CRT TV? [closed]

CRT TVs were great, and an absolute must for all classic video games. However, it cannot be denied that it's impossible to buy a new CRT TV today, at least in any kind of normal store, and you rarely ...
Humaid's user avatar
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0 votes
1 answer
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How picky are CRTs about power cleanliness?

How picky are CRTs about the 'cleanliness' of the mains power? Cleanliness referring to electrical noise from thing like ac motors in fridges, powerline ethernet, etc. Cleanliness is also referring ...
Alexander M's user avatar
0 votes
0 answers
242 views

HDMI to SCART - Using Mega Drive (Genesis) Mini with CRT

I have a Mega Drive (Genesis) Mini that features an HDMI output that I would like to use on a CRT TV I have with a SCART input. Ideally I would like to convert the HDMI to RGB SCART for the best ...
Peter Bridger's user avatar
-5 votes
1 answer
217 views

What's the name and model of this computer monitor?

It's look like very old thing to me: It's in Black and White display. As you can see, it has a socket on the top of it . What's the name and model of this computer monitor?
Andrew Arc's user avatar

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