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Gateway 26" LCD Power Supply

I have a Gateway 26" LCD TV and one half of the power supply is fried. It's the half that powers the LCD panel. Does anyone know where I could locate one of these?

Posted by Brandon Williamson on

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Anonymous

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There is a silver lining....
Unless you physically see burned components on the power supply main board, it
is not fried. If you examine the board on the back side ( solder joint side) you will notice that there is a devider that is clearly marked between the Primary and secondary sides of the board. There will also be a large transformer accross this area.
All switch mode power supplies have optical couplers which cosist of a light emmiting diode usually infared and a photo transistor. These are for protecting the secondary side of the board or the expensive side. A typical switchmode power supply for an LCD tv will have at least three of these. They are roughly 1/4 inch long and 2/8 inch wide
and are black with four leads. They will be directly accross the marked portion of the board that seperates the primary or high voltage side of the board from the secondary.
These opticle couplers or switches cost an average of $ 7.00 a piece and are available
from any electronics supplier such as NTE.

I hope this helps. Remember it can all be repaired. Its a matter of if its economically
worth your time.

Posted on Feb 03, 2008

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Gateway's are made by Delta Electronics. In the past I have tried to get service manuals and parts from them but they will not sell to anyone other than authorized agents. If you have identified the bad components and they are not proprietary or special units you may be able to repair the power supply. With the exception of the transformers the other parts should be off the shelf and available. The question may be whether you can identify them due to burning etc. A bigger question may be why did it fry in the first place? Is there a short somewhere else? Something caused the overload. If it was the LCD panel you have bigger problems. Good Luck.

Posted on Jul 18, 2006

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D10 is shorted. HER304 in middle of Power supply board near large electrolytic cap. Replace with Radio Shack 276-1144 3A 400PIV Diode. PLEASE BE CAREFUL WITH HIGH VOLTAGE PRESENT ON POWER SUPPLY BOARD. UNPLUG POWER CORD!!! OBSERVE PROPER POLARITY WHEN REPLACING DIODE-LOOK WHERE THE BAND IS.
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D10 is shorted. HER304 in middle of Power supply board near large electrolytic cap. Replace with Radio Shack 276-1144 3A 400PIV Diode. PLEASE BE CAREFUL WITH HIGH VOLTAGE PRESENT ON POWER SUPPLY BOARD. UNPLUG POWER CORD!!! OBSERVE PROPER POLARITY WHEN REPLACING DIODE-LOOK WHERE THE BAND IS.

PS- I fixed this model this morning.
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