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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Why did some video games apparently use "interlaced" video modes?
I was under the impression that "interlaced" video modes was only a thing for remote television content because it saved bandwidth to only send 50% of the data to the homes, so you could fit ...
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Sending video to Telerate 9" Green Monitor [closed]
I found an old Telerate green monitor at a thrift store and figured I could run my computer output through an HDMI -> AV converter with no problem, or a Raspberry Pi composite output signal. Turns ...
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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
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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 ...
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Which font with slashed zero is being used in this screengrab?
Do you know which font is being used in the video here: https://www.youtube.com/watch?v=xnudvJbAgI0? A screengrab of the video that shows a lot of text:
We can see that the zeros are slashed, so it ...
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What is the difference between the Commodore 1701 and the 1702?
Among the monitors offered by Commodore were the 1701 and the 1702, which, to my recollection, looked pretty much identical. Were there any cosmetic, functional, or other differences between the two?
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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 ...
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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 ...
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Why not SCART for early color monitors
By the early eighties, it was starting to be considered desirable for computers to have color monitors. Home computers often made do with a TV set and accepted the consequent low resolution, but ...
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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 ...
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Could monochrome systems produce better output for monitors than TV sets?
Many classic computers could optionally use a TV set as the display. At least in the early (pre-SCART) days, the TV would typically only have RF input, but if you were using a monitor, you could get a ...
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Why did CGA RGBI output leave DAC to the monitor?
CGA on the original IBM PC produced sixteen colors, one bit each for red, green, blue and overall intensity modifier.
The preferred output device was the later-arriving 5153 color monitor, which ...
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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 ...
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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,...
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Why were animated screensavers used instead of a black screen on CRT monitors?
Before the advent of modern monitors, CRT technology was used, which was vulnerable to screen burn-ins. Screensavers avoided these problems by producing animations instead of persistent images.
Were ...
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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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Were there any square monitors other than PLATO?
The PLATO multiuser interactive computer system used – and indeed invented for this purpose – a plasma display, whose key selling point in the late sixties was that it did not need refresh, therefore ...
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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). ...
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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 ...
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Why was the Microvitec Cub monitor made of metal?
In British schools in the early eighties, the iconic microcomputer was the BBC Micro, typically connected to the equally iconic Microvitec Cub color monitor, as described in this video.
Why this ...
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Why did 80x25 become the text monitor standard?
Prior to the 1981 release of the IBM PC, the VT05 (72x20 1970), VT50 (80x12 1974), VT52 (80x24 1975), and VT100 (80x24 1978) text terminals were used on many Unix machines and the PDP-11 (probably the ...
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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 ...
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How to connect an HX-20 to a monitor via the RS232 port?
Using & Programming the Epson HX-20 Portable Computer by Eric Balkan has a tantalising passage on p. 172*:
T.L. Ronson of the HX-20 User's Group also notes that a monochrome monitor can be ...
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What are principles of vector CRT display? Simplest way to drive CRTs? [closed]
I am into playing with TTL to build 1970s style minicomputers. Aside from talking to them via some serial (or parallel) I/O port to a terminal, I am wondering about display output. This here is about ...
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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 ...
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What monitor could render APL2 characters in 1985?
BACKGROUND:
In 1985, I took an evening class in APL at the local IBM as part of a high school Explorer Post (which was really cool, these guys giving up their time to teach us programming). Other ...
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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 ...
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Did Apple bundle a specific monitor with the Apple II+ for schools?
Sometime in 1980 (or maybe 1981) my school district purchased its first batch of Apple II+ computers. I remember vividly they had absolutely no idea what to do with them, and so the machines were ...
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Identify Toshiba CRT
Didn't find anything with a search and need to replace the tube due to it being severely burnt in.
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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?...
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Does the Atari 1040 STE work with the Atari SM124 monitor?
I have an Atari 1040STE. I'd like to use it with the Atari SM124 B/W monitor but I'm not sure it will work. It's my understanding that the Atari SM124 works fine with earlier Atari ST models, but when ...
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Monochrome CRT Repair - Horizontal offset
My CRT all of a sudden is shifted to the right. I cannot adjust it via the adjustment potentiometers, nothing changes when these are turned. If I increase the brightness, the whole screen turns green (...
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Ideal resolution for color computer on PAL/SECAM
Suppose you were, in the early eighties, designing a color computer to run on an PAL TV with a free hand to choose the specifications within the limits of the technology of the time. What would be the ...
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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 ...
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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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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 ...
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Why didn't early color TV sets accept RGB input?
Early PCs generated RF signal, and later Composite video or S-video, to use a TV set as monitor. Why didn't color TVs of those days expose a analog RGB interface for direct connection from VCR/PC or ...
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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 ...
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Choosing a monochrome color at the monitor?
A monochrome monitor displays only one foreground color and one background color. Usually the monitor was manufactured to produce only one color, which was cheaper (both CRT and electronics) than a ...
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What is the correct name for the old green/amber-on-black monitors, and what are the best vintage models to look for used?
I'd like to buy an old green-on-black or amber-on-black computer monitor, but I'm not sure what to search for. Are they called "monochrome" monitors, or something else?
What I want is one ...
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Can the 80-column display really be improved on a C128 and 1902A monitor?
The March 1988 issue of RUN contains the following tip from a reader on page 20:
Attention: C-128/1902A Owners!
If you use a Commodore 1902A video monitor with your C-128, here's a way to get a ...
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Physical resolution and control of old VGA (color) CRT monitors
I've just realized I have a gap in my understanding of the VGA CRT monitors of the 80386 era (1980s-1990s).
What was the phosphor resolution? It turns out I did not have proper understanding of the ...
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Why does my CRT whine?
My Amstrad CTM644 CRT 'monitor' (really a TV grade tube with RGB inputs), makes a high pitched whine when powered on, audible to my children and cats, though no longer to my own ears. My research ...
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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 ...
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Is it possible to swap the Apple IIc's monochrome CRT tube for a color one?
I just love the Snow White industrial design language of the Apple IIc, especially when paired with the Monitor IIc. It is a classic design that doesn't show its age. I've even recently seen them ...
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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. ...
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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?
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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 ...
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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.
...
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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 ...
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