There's a couple capacitors you need to replace. On the video board, not the power supply board. There is (3) 470uf16v on the video board. They have to be the smaller ones, you can not use the larger ones (they will not sit flush onto the board) Any questions, e-mail me at Andrew@CreativeAudio.biz
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Now u turn on the tv the tv pictures only flashes a few sec.than dies,but the tv still have audio sound left only?Yes,mean ur tv have a 1 or 2 long boards that are call a LCD inverter boards are the causes and the problems.These 1 or 2 long LCD inverter boards only job are to provided the tv LCD screen panel for a backlight for the tv to have picture only.Tries websites like Shopjimmy.com,Ebay.com to buy a 1 or 2 the tv long LCD inverter boards for the replacement.
The power printed circuit board is failing by the information that you have given, but with additional information we may find the actual cause and a solution to it. You may email me at: Sprint6@zoominternet.net or explain better the symptoms it is having.
U can still hear the tv audio,after the picture logo is gone and went to a black screen panel a few sec later?Yes,than the tv have these 1 or 2 long boards call the LCD inverter baords are dead.These 1 or 2 long LCD inverter boards help the LCD screen panel to have a backlight to produced a pcture.Tries websites like Shopjimmy.com,Ebay.com to buy those 1 or 2 long refurbishes LCD inverter boards for the replacement.
I may be able to fix it for you
I believe the problem is in the same board that causing the strobing screen problem.
Cost is 150 to repair the problem board if it isfixable. No charge if not fixable.
You will have to pay round trip shipping for the monitor and power supply to Pennsylvania.
Assuming you changed all the caps and did it correctly.
IF you get flickering, It could be a transistor on the inverter board.
OR !!! and probably more likely,
It could be one of the bulbs in the lcd itself is failing. It only
takes one bad bulb to stop an inverter from firing up !! You can check
them one at a time if you have another working monitor.
If you do unplug a good bulb from the good monitor and try each of the questionable ones, one at a time.
Doesn't have to be a gateway monitor to test it, just needs the same backlight plug.
(I'm copying a guest's comment above. What Gateway told him does seem to work - although in my case, the monitor was slow to start when plugged directly into the wall, and it was immediately fixed when I plugged it back into a heavy duty power bar.)
hey, I had the same problem. Gateway told me "Plug the monitor power plug directly into a wall electrical outlet or
a different wall outlet by removing any surge suppressors." I did that
and it works. It might be a certain kind of power bar they do not like.
It worked for me so try that and see if that helps.