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No power going to t.v.

I have a plasma 32" t.v. and it won't turn on the power kick but then shut off?? Don't know what's wrong with it? I also kept flipping the power switch.. It didn't help..

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Replace the power pcb.

Posted on Jul 17, 2009

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Hitachi 55in plasma TV, model 55HDS69. It will not power up from either the remote or the on/off switch on the side. The TV was used a lot, for more than 5 years. It shut off while running. The red...


Hi sir Jim!!!!



kindly check the 5 LED if there is lit lights to diagnose where the fault came from..You said the 5 led turn off for 1 -2 seconds it means no error but still won't turn on I think there sometime wrong on logic circuitry..


1_20_2012_6_55_00_am.jpg

Try to read the voltages on highlighted words on picture of block diagram above such as vs,va,vcc,stby+5v,stby+3.3v,+5.5,+10.5 and +12v...

After that let me know the results to diagnose where the fault from..

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Hello,

You have a TV with a failing power supply board. There are parts in the power supply called capacitors that start failing and this causes the power supply to not be able to properly filter the voltages. When you keep turning it on and off the capacitors will finally hold a charge correctly so the voltages will stabilize and the TV turns on ok until the next time you turn it off. As time goes by the capacitors will degrade more until the TV will not work any more. If you can solder then you should be able to repair the TV yourself. We have a page on our web site http://www.ccl-la.com/blog/index.php/capacitors/
That explains what capacitors are and how to determine the bad ones that have failed. If you replace the failed capacitors in the power supply then you should have a working TV again.

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37" hitachi plasma tv doesnt turn on


If you have a light on ( standby light ), then I would say power supply fault, tv could be shut down because of faulty capacitors in power supply. if you dont have any lights at all , check fuse in plug,
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yes that was from that cut power you should go now to the authorized service to fix that problem

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