Question about Panasonic TH-37PX25U/P 37 in. HDTV Plasma
TH-42PX25 NO PICTURE BLACK SCREEN ON ALL VIDEO SOURCES. OSD WORKS FINE AND CLEAR. NO NOISE ALL FANS WORKING GOOD. SS BOARD SHOWS 2 LED LIT. SERVICE MODE ALL CHECKED OK. I SUSPECT "D" BOARD?
We had the same problem. Luckily, we had a service contract, so it was serviced yesterday. The fix involved the service guy going through a "service menu" and resetting the TV that way. He was not "allowed" to tell me how I can access the service menu, however. I do plan to research this on the internet in case it happens in the future. It is basically a software/computer problem, and unplugging the TV isn't enough to clear it unless the TV is unplugged for "a long time." The technician said the length of time depends on the condition of your capacitors. Anyway, as a temporary fix, he showed me that you can go into the PIP mode. The device toggle for PIP apparently did still work with mine, so I was able to switch the device on the secondary picture and then switch it to primary, then toggle the PIP off. Good luck!
Posted on Mar 26, 2008
The condition of your TV called power supply overcurrent shutdown. The TV is going into a protection mode to prevent further circuit damage. That's why it will not turn on or not powering up. I would concentrate on the power supply section board. Bad regulation of the incoming voltage could caused this issue although,there is a capacitor across the incoming line and nuetral.Maybe its leak or dry up and cause the problems,change it out with one of identical rating .I would probably also check the flyback circuit and flyback transformer although now you are getting into dangerous area,especially if you have no electronic experience background. It could be also be a loose ,crack or cold solder joint,a blown fuse,fusible links or other component .It could be one of several boards.Unfortunately the level of sophistication on these TV make it virtually impossible to diagnose them further without taking them apart and probing around with a multimeter and other tools.This TV is handy enough to take to a repair shop find a good one.You will probably have to pay $75 to $100....
Hope this may help you..
Posted on Sep 03, 2008
If using component cables check connections at TV or from source. If all rae ok the try source on another tv before getting video input circuit board replaced on tv
Posted on Dec 15, 2009
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