Having problems with your Computer Monitors ?

LCD Screen blinks on & Off at start up up-to about 10 minutes

\015 I have a Gericom 19'' flat panel LCD monitor. When I first start the computer the screen and led light keeps blinking, also picture comes on and off. I did try it on other computer same result. After about 10 minute I get the picture on the screen. Also sometime after 2 or 3 reboots everything is normal until I shut off the computer. May be after about an hour if i try to restart the computer same problem however it takes less time perhaps 2 or 3 minutes for the screen to be normal.\015\012I have read a lot of post mentioning Capacitors, looking at PCU I can not seen any blown capacitor. I did notice some brown stuff on a round coil like (about 1cm round copper wired, says 125\302\260 on it) object. \015\012There are about 20 odd capacitors on PCU, i have no idea which ones needs replacing.\015\012\015\012I would be grateful for any help?\015\012\015\012HP\015

Answers :

Hemante, you should look for electrolytic verticle can type capacitors whose tops are not flat but slightly swollen. Also check all the soldering for COLD or THERMALLY FRACTURED solder joints on the bottom of the inverter board that powers the CCF tubes. Be sure to replace caps with only 105degC caps. NOT 85degC!!! If you have digital cam take pictures before you tear apart monitor. this way you can get it back together correctly. Hope this Helps. Good Luck!
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