CRT computer monitor - troubleshooting

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snm

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CRT computer monitor - troubleshooting
August 27, 2018 - 9:41pm

HELO

 

I have a CRT computer monitor, LG Studioworks 552v model, but this is not working now. There is LED light in the front panel, but there is no display.

It is not new one but old - some 5 or more years approx. Kindly help me to find a solution for this. What may me problem?

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CRT Monitor Repair tricks
August 28, 2018 - 10:56am

Hi,

Since your monitor does not display anything make sure your source source (CPU) is working properly. Try connecting a functional monitor to check if you are getting the picture there.

The life expectency of a CRT monitor is around 8 year on average. Did you monitor show any signs of blur display or balck and white display before it turned off completely? In that case the problem should either be with the power video adapter or the CRT Tube itself, either case it is not worth repairing your display and a replacement would be a lot better. 

Caution: Unless you know what you are doing do not try to open and repair a CRT monitor by yourself. Like all doomed displays they operate on high voltage and have large capacitors which can store power even after weeks you turn off the display. 

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I wonder you are still using
August 28, 2018 - 5:35pm

I wonder you are still using CRT Monitor, they are outdated now. However, there are thousands of reasons for a monitor not to work. But start with either connecting another CPU to this monitor or connect the CPU to another monitor and see if the problem is with CPU.

Also tell me if it shows "NO SIGNAL", when you disconnect the CPU from it.

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CRT computer monitor - troubleshooting
September 8, 2018 - 8:27am

it does not show 'NO SIGNAL' - there is nothing on the screen - blank only - the computer is ok - 

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CRT computer monitor - troubleshooting
October 2, 2018 - 1:13pm

helo,

 

 

problem is not with computer - the computer is ok - the monitor does not show ' NO SIGNAL' on the screen - only blank screen - please tell a solution

 

 

 

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Hi,
October 2, 2018 - 9:49pm

Hi,

 

Please be careful while opening CRT monitor as it contains High Voltage!!!!. Do not touch SMPS ground and Computer / CRT monitor secondary Ground !!!!!. Do not Touch RED/Black cap attached with CRT Monitor!!!

Check if you can seem small Filament Glow on CRT neck. If yes, there could be an issue with Dry soldering on LOT coil. Switch off Monitor, wait for 10 mints befor touching circuit, check for dry soldering near LOT.

If no Filament Glow, check 110V on secondary side of Power supply. 

 

 

 

 

 

 

 

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snm

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helo
September 3, 2019 - 1:36pm

helo

no result - i think the fbt circuit is complaint