Question about JVC Televison & Video
Posted by Anonymous on
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Posted on Jan 02, 2017
You may have bad power supply or shorted out backlight inverter board that causes the TV to go into shutdown mode. You need to check those two boards out.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
Please post back what you find.
Posted on Jul 28, 2010
SOURCE: black screen in jvc lt 42e478
If you can see a dim image when you look at the screen at a sharp angle then you most likely have a faulty inverter board or faulty CCFL lamp/s.
Most likely faulty inverter board which supplies high voltage to the CCFL lamp/s.
Posted on Jan 16, 2012
If you've had recent fluctuations in your electrical supply which is common during the summer, you've likely got blown capacitors in your TV. Leave it unplugged for a few hours and try plugging it back in. If it works, then great, if not, then you would have to check for bad capacitors.
If you're half decent with a soldering iron, it's an easy repair. Go to Badcaps.net for instructions. They even sell high quality replacements too if that's what you need.
Posted on Jul 24, 2012
With a TON of TV Sets, today... the Power Supply Boards have a tendency to go bad. Most of them use a very cheap and unreliable capacitor brand for the Boards and these capacitors are known to blow. If you have the back off of your TV Set - take a look at the Board where your Power Plug is inserted. Look at the top of the capacitors. If any of them are "Domed" (i.e. not completely flat) on top, the + shows any separation (this is the scoring on top of the capacitor, in the shape of a "+"), you can see where any liquid has come up out of the top, etc... you have a bad capacitor. You can, of course, replace these capacitors, but most people find it easier to just buy a new Power Supply Board... for they are easy to install. Hope this helps. Btw- if you look @ the capacitor and are not sure what to look for - just Google "pictures of bad capacitors" and you'll see exactly what I'm talking about. Good luck!!
Posted on Oct 23, 2013
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