I have a JVC HD 52g787, the sound works but no picture, The tv comes on, but the blue light just blinks, then cuts off, I have sound no picture
The problem is usually from the power or the Y sustain at the left or right side of the display when one of the large capacitor or heat sync on the capacitor even the flat power cable connection it to a main power board needs to be checked too, if the fuses on the board are blown it will need to be replaced
But after replacingthe fuses and the capacitors and still no solution,youwill need to replace the all board ..
You can also trouble shoot first before going to the board of the TV..
How to Troubleshoot an LCD With Sound But No Picture
It can be overwhelmingly frustrating when an electronic device as expensive as an LCD television set starts having problems. Luckily many of these problems are easily troubleshot. While being able to hear sound coming from your LCD television but seeing no picture may seem serious on the surface, fixing the problem involves checking a few different settings to make sure everything is set properly
Check the video connection of any devices plugged into the LCD television. If you can hear sound but are seeing no picture while trying to use something like a DVD player or cable box, the problem is probably that a wire is loose somewhere. Check the yellow video cables running from the DVD player to the TV and make sure everything is plugged in firmly and where it should be. Also check the coaxial cable running from the cable box (or cable outlet) to the television and make sure that wire is also screwed in securely.
Check the image settings on your television and make sure everything is set properly. Certain settings like "Picture" or "Brightness," if set to one extreme, can make the picture appear completely black. This could cause you to simply hear television shows but not be able to see them. Reset all picture settings on the TV to their original factory default settings to see if that fixes the problem.
Try another channel. If you're watching TV and not getting a picture, the first thing you should do is check a variety of random channels to make sure it is a problem with your TV and not with your television signal. If it is a problem with the television signal it is the fault of the TV station or cable service provider and there isn't anything you can do yourself to fix it.
Try the DVD on another DVD player. If you're trying to play a DVD and can't see any images, make sure the disc isn't defective. Try it on another DVD player or a computer DVD drive and make sure the disc works in the first place.
Hope it helped ..
Jul 17, 2011 |
JVC HD-52G886 52" Rear Projection HDTV