LG Studioworks 700S CRT Monitor Yellow Display

[jdimpas]

Hi guys, thanks for a having time on this thread. Actually, i had a technical problem with my old school monitor which is CRT type. Just recently the video that appears in the screen turned into yellow and when i turned the monitor off and switch it on again, the displays back to normal, unfortunately, after sometimes the yellow display appears again. I've already checked any cut in VGA cable fortunately it's fine. Most likely the problem is inside the monitor.
Any help will be great pleasure! Thanks

[weirdlookinguy]

Re: LG Studioworks 700S CRT Monitor Yellow Display

Try smacking it when it goes yellow, see if it flickers back to normal.

If it does, you have bad solder joints. Easy fix.

[Harvey]

Re: LG Studioworks 700S CRT Monitor Yellow Display

It could be solder joints, or it could be a driver transistor(s) that's going faulty, or it could be the tube that's developing an internal short on a cathode - all give similar symptoms.

Open her up and check the soldering on the tube base PCB, wiggle the tube base socket and see what happens from there...

[jdimpas]

Re: LG Studioworks 700S CRT Monitor Yellow Display

thanks for the response guys, ill check the cold solder.

[jdimpas]

Re: LG Studioworks 700S CRT Monitor Yellow Display

Try smacking it when it goes yellow, see if it flickers back to normal.

If it does, you have bad solder joints. Easy fix.

when it turns yellow, i smacked the monitor and turns to normal again.
specifically which part should i re-solder?

[jdimpas]

Re: LG Studioworks 700S CRT Monitor Yellow Display

SUCCESSFUL:

I've just finished re-soldering the board which attached to the picture tube. Well, luckily it was tremendous and successful!

Thanks for helping guys!