Logik LCX27WN2 no picture


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Logik LCX27WN2 no picture

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PurpleRoadie
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Jun 30, 2008, 8:12 AM

Post #1 of 3 (84 views)
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Logik LCX27WN2 no picture	Can't Post

I believe the inverter board is faulty, need help on testing the board to find out which component(s) are faulty

rrobor
Veteran

Jul 2, 2008, 9:29 AM

Post #2 of 3 (74 views)
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Re: [PurpleRoadie] Logik LCX27WN2 no picture [In reply to]	Can't Post

Most of these you have to fix cold as there is no way to test live. The inverter board is just a chopper supply feeding several little transformers which are in effect starters for the backlamps. The usual is chech the driver transistors for shorts and check the transformer resistance. You have several so check each reads the same. failing that and I just did 2 BENQ with a backlamp out at 4 years so thats your likely.

PurpleRoadie
Novice

Jul 2, 2008, 1:14 PM

Post #3 of 3 (71 views)
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Re: [rrobor] Logik LCX27WN2 no picture [In reply to]	Can't Post

ok, all transistors and transformers appear fine and the caps linked to the transformers

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