Question about Samsung 21" FLAT CRT COLOR MONITOR

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CRT monitor's background colour is changed to dull yellow colour

Actually mine is 17 inches CRT monitor.I have been using it from past 3 1/2 years.when i on the system intially it is o.k, but after 2 to 3 min it's back ground is changing to dull yellow colour.

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Hello,
i think this problem accure due to chage of CRT CATHODE. if you are not a hardware engineer then check it from hardware engineer. any crt monotor have 3 RGB Cathode to release electron on screen. the electron comes shodow mask and create a pixel on the screen the pixel make a picture. The RGB color make the perfect picture. if your picture is dull then i think that happen due to less negative chage of Cathode or any Crt base Bios ic is failior. so you have to checked it from hardware engineer.
ok
bye

Posted on Nov 13, 2008

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Posted on Jan 02, 2017

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I have LG CRT monitor 17 inch .when i switch on my crt it start sparking sound but not actual spark . the sound was so iritating & sparking shows on screen but not inside the monitor. So what was the...


hi,
You have to replace the flyback transformer of your monitor. Its a high voltage stepup tansformer which provides necessory volteges for the picture tube like Anode voltage, screen voltage and focus voltage. After some years of use the insulation stength of the flyback transformer will become bad and the high voltage will try to discharge trough the nearest ground poit. At that time you will hear the sprking sound. Its because of the high voltage Anode volt is discharing to the ground it will reflect on the screen. Using the monitor in this condition will result in the failure of horizontal driver transistor and even the power supply. Replacing the flybalck will solve your problem.
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1 Answer

Yellowish screen


On a CRT, "yellow" is a mixture of all 3 "primary" colours.

So, if you are expecting some other colour, then one of the 3 "guns" that are emitting one of the primary colours is NOT working correctly.

For less than $100, you can purchase a new, 19-inch (not 17-inch) LCD (not CRT) monitor.
This is less expensive than taking the CRT to a TV/video store for trouble-shooting and repair.

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About how old is a 17" compaq 7600 monitor?-any reliability issues with this one?


This monitor is 2-3 years old.

There are not any real reliability issues, but it is a crt monitor, meaning that it uses more power then todays lcd monitors.

Its worth about $50 used.

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What has happened is part of your back lighting circuitry has gone out. Yes it is repairable but can cost most of what a replacement monitor will cost these days. Check that out before spending the money. If the problem is only in the back lighting circuit then expect to spend about $100 for a replacement board.

LCD monitors lifespan depends on the quality. Normal use and you should get 2-3 years of reliable service minimum. The display itself is good for about 4000 or so hours of use or more. The problems that show up are always (well 99.99% of the time) are back lighting problems like you have experienced. You should turn it off by the switch when not using it as every hour it runs the screen save is an hour of usable life. Heat is not good for it so if your computer gets the dust cleaned out to keep it cool do the monitor at the same time. Once a year at least more if you smoke use gas heat and have pets.

Tube monitors have a much longer life but you have the size weight and poorer display to go with them. If you have to go back to a tube monitor don't go back to your 14 ask around and you should be able to get a 17 or 19 crt for free. Or expect to pay no more than $10-20 for one.

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1 Answer

Monitor


Monitor sizes are measured on the diagonal from corner to corner.

A 17" LCD may have a screen width of 12 inches measured from side to side.

If you are measuring a old style CRT monitor (Cathode Ray tube) the visible screen area will be about an inch less as there is about 1/2 inch of plastic frame holding the CRT in the chassis. The manufacturer can advertise the actual size of the screen regardless of how much is actually visible to display information.

If you are talking about software not utilizing all the available screen area to display the image, that is an issue with the people writing the software code not keeping up with the changes in hardware.

In the past year or two, most displays have switched to the 16:9 and 16:10 wide aspect ratios while most web content is still written for the 4:3 old style aspect ratio. Eventually, software developers will catch up with cusrrent hardware.

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That is the thing. I know for a fact that my current CRT is working fine. It rand beautifully on my computer back home. I have a suspicion that it is something related to the actual computer/video card...


I have this issue on a proview 17 inch lcd it is a issue you either live with or get another monitor, shutting it off for 8 hours does help mine.

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My only suggestion: responsibly recycle that 17-inch CRT, and buy a used 17-inch LCD; around here, the local "government surplus" store is selling 3-year-old 17-inch LCDs for $50, plus taxes.

If it was a "plug-and-play" monitor, then there was _NO_ need for any "drivers" at all, because the monitor would identify which combinations of horizontal/vertical pixels and refresh-rates that it would support.

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1 it is due to horizntal output trnansistor. 2 capacitor connected to horz output. 3 flyback transformer. hope this will help you.

Oct 08, 2007 | Hansol (720ESB) (Black, Silver) 17 in.CRT...

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That sounds like a monitor issue, not a video card. Gradual fading means components within the monitor are wearing out. However, I strongly advice against attempting repairs. CRT monitors hold a strong electrical charge. People have been injured and even killed by attempting to work on them without proper tools and training. A 17" CRT monitor is too cheap to be worth the risk (you can often get them used... I got mine for $20 at Goodwill).

Aug 22, 2007 | Dell P780 17" CRT Monitor

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