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? 3:16
https://www.youtube.com/watch?v=kFdVi2ejfzA
May 8, 2014 - Uploaded by ShopJimmy.com
TV Repair Help for a TV With a Black No Image on the Screen ... the show I'm watching and then it turns ...
? 2:57
https://www.youtube.com/watch?v=-TU2KSuect4
Mar 4, 2014 - Uploaded by ShopJimmy.com
i have SAMSUNG led tv with NO picture and there is back light and sound OK, ... Apparently the TV was on ...
Try with that... http://www.filestube.com/3c4e959f7e53ba6703e9,g/PHILIPS-42PFL7932-LC420WU5-V2-CIRC.html
Symptom: Sound but no picture.
Cure: Master or Slave inverter is defective. It can be that the driver IC is defective or MOSF inverter transformers, or 470uF 35V C Replace driver IC BD9897FS or MOSFET's. 996500046243 IC BD9897FS 996500046242 Mosfet FDD8447L 996500046241 Zener KDZ100V
yes,remove the back of the tv,on the power board you will see the problem.replace those capacitors on the power board.this will allow the set to work.the black bars may still be there.this is an indication of a bad panel.
sounds like the backlight is out, can you see a picture when shining a flashlight on the screen. if yes you have either a bad inverter power supply or bad screen (panel).
both are serious , also could be just a few bad capacitors on the power supply, if you want you can do a visual of the power board caps will appear swolled on top and are easy to solder in cost about $1 EACH
It has been my experience with that model mitsubishi that the usual culprit is loss of vertical sweep. If the beams in the picture tubes stops moving up and down this is detected by the micro processor and the video is blanked, but the set is not shut down. The usual cause of loss of vertical sweep is bad solder connections on the deflection yokes or a failed vertical output IC.
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