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Can someone help This tv has sound but no video.

Can someone help This tv has sound but no video. VS,VA and 5V are ok, Led D103 lit , The video processor get hot

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Check the inverter.

Posted on Dec 30, 2010

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Posted on Jan 02, 2017

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Kindly disconnect back light module & try power on , if fail try change any bulged capacitor ,then your VA output should have 5v, 12, & 24v if not present please change your power supply

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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..

Hope it helps...

chester..

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1 Answer

My 42 inch tv wont turn on model nu 42pfl5603d/10


what you need is trouble shooting and a good digital tester to fix that problem. since the problem is power off start at the back light check if their is a small maldischarge at the module then check if their is a click on relay and then if the front LED is turn from red to green. then check the power supply if normal, check the low and high voltage except the stand by supply. then check the Y board the Va and Vs supply look for the blown fuse. and then the Z board check the 5v and Va supply, check also blown fuse.

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My 50" lg plasma has


first thing you you need to do is open the back cover for trouble shooting. then check the normal connection of all the connectors and then look for the back light if their is a maldischarge from the module.disconnect all the connectors to isolate excessive voltage. turn on the tv and check the Y board if normal the Va, Vs, -Vy and Vsc voltage are all present.the same thing with the Z board the Vzb, Vs and Va voltage if normal,check if no blown fuse.there are FET at control board check the 3.3v, 1.8v and 5v.be careful always especially in performing voltage checking.

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