Question about JVC HD-52FA97 HDTV
At user level, the only thing you can do is ensuring that the problem is not given by a defective video cable or by a connected device. The TV is more likely faulty, and must be disassembled and repaired by a technician.
There are different parts to be tested. If you get intermittent picture , and TV does not go to forced standby (protect mode).
Test using different connected devices (eg. tuner and external DVD or console). IF problem is only with one device, then it may depend on the device.
If the problem occurrs using internal DVD or VCR, then the problem is the internal player.
Do a test by opening a menu on TV, and see if the loss of video affects the on screen display. If the on screen display stays there, then problem is digital video (main digital board), terminal board or circuits (inputs), or if connected straight to antenna, tuner board.
More commonly the loss of raster include the OSD, and you get a completely dark screen.
In that case most common failures are power board and drive power board supplying the lamp (often called ballast).
Testing is done monitoring voltage to the lamp while problem happens and testing voltage line from power board to lamp. The PSU supplies lamp on 12V DC line.
The full service manual have been uploaded here:Click here to start download..
If that does not work use this (same upload):http://www.mediafire.com/?t51c8y8ead3xka3
Posted on Mar 21, 2011
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Posted on Jan 02, 2017
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