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Sanyo DP15647 powers on but no display, trying to find fault

I've got a Sanyo DP15647 that suddenly stopped working. It displays a pretty green light when the power button is pressed. But nothing else. I checked it out and both the power board and the main board appear good visually, no bulging capacitors or anything like that.

I've got a multimeter and I checked all the cables they're fine, and I've tested the connectors on the board. I was wondering if anyone more familiar with LCD screens could suggest some other things to try to find the point of failure so I don't replace unnecessary parts.

Any input appreciated!

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  • v1nsai
    v1nsai Jul 15, 2009

    That's a good idea, thanks a lot. I'll post if I find a solution

  • v1nsai
    v1nsai Jul 15, 2009

    Crap....where would you recommend finding this service manual? I've been googling for about 15 minutes now and usually when you don't find what your looking for immediately it's going to be a problem....

  • v1nsai
    v1nsai Jul 16, 2009

    Right on, thanks a lot this really helps


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I had a similar problem like yours with a different TV. I had to find the Service Manual for the TV to really find the problem. The manual gives me every schematic and parts number list for every board in the TV. It turned out to be a bad Inverter Transformer. It was one of six that powered the LCD screen. You might have the same problem.
The Service Manual on the internet for most TVs are under $20. It's the best material for diagnosing the problem. It worked for me.

Posted on Jul 15, 2009

  • Devon Sacco
    Devon Sacco Jul 15, 2009,, and
    If anybody had it, they would.
    I tried to find a service manual for you just now. It's a possibility the TV is too new on the market and they haven't released the Service Manual yet. Or, it maybe listed under a slightly different model number. Some of the web sites above, you can send a request for the Service Manual under your model number.


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