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When I turn on the television the screen comes on just fine for a few seconds then the picture goes blank. The TV stays on otherwise. I found an article a few months ago on another site but can't track it down. I know that the site said it needs a board replacement but I don't know which board it said. Does anyone know which board needs replacement?
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jmcdonald sounds like your inverter or your power board is on the fritz. Check in a darkened room with a flashlight beam angled against the screen if you can make out any shadows etc. If you take the back off and take a couple images and post those with your question, we might get you to test some voltages to see if it is the power board not supplying proper voltages to the inverter or if it is the inverter. Use this guide for that.
You should have another board in there. Something like this
That's the inverter board.
You also want to take a multimeter and test the output on the connector marked with the red arrow.
From Left to right:
PSON (Measures 0v with power button off, 5V power button on)
SGRND
SGRND
5v (Measures 5v with power button on and off)
5v (Measures 5v with power button on and off)
SGRND
SGRND
12v (Measures .10 with power button OFF, and .12 with power button on)
12v (Measures .10 with power button OFF, and .12 with power button on)
SGRND
SGRND
24v (Measures 0v with power button on, and .18 with power button on)
24v (Measures 0v with power button on, and .18 with power button on)
SGRND
SGRND
See if you get similar values.
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Thanks oldturkey. The pictures have just been uploaded.
jmcdonald, all I got on this end is a bunch of grey. Try the download again.
Pictures reuploaded.
okay much better:-). Give me a day to see if I can get to it to mark a few things for you.
Hey oldturkey, did you get a chance to look at the pics?
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jmcdonald, this is a Sanyo model?
由 oldturkey03 完成的
Yes it is a Sanyo.
由 jmcdonald 完成的