1. Home
  2. Electronics Repair
  3. TV turns itself OFF and back ON

TV turns itself OFF and back ON

I have an 8-year old Panasonic TV that I repaired recently thanks to nice people in the group. thanks again!

Now after about 2 months or so the TV started to turn itself OFF and back ON. It did this maybe once a day, then twice, now this evening did

4 or 5 times.

It stays OFF for about 2 minutes, but I didn't check to see if it is 2 minutes even. I tried to reset it (unplugged everything for a day). I did not set the clock, and I turn the timer off. I don't know what else to do. I noticed that when it comes back ON it displays the menu on the screen (setup, timer, picture, etc). Also while it is OFF you cannot turn it back ON. I tried both the remote and the switch in the front, no go. It's just dead, but I think I hear some noise inside, almost like the TV would be ON without picture.

I don;t have the sound hooked up, I use it as a monitor, and the sound goes to the stere system. I should probably connect the audio straight from VCR to TV and see if the audio circuitry is also OFF or ON during this time.

Any other ideas? seems to be a "digital" effect, I don't think there is something that overheats or another "analog" defect. When it comes back ON it is 100% functional, picture is perfect.

Thanks again.

Reply to
chibitul
Loading thread data ...

Did somebody wash the screen and drip cleaner into the power button? Might also be worth checking to make sure it isn't the remote control malfunctioning, take the batteries out and see if the problem persists.

Reply to
James Sweet

snip----

sounds like the micro may be confused, or there is a broken trace on the pcb near the clock/data bus lines. maybe the crystal is poorly soldered??

-B.

Reply to
b

I can't say I am familiar with this specific set, but I had the exact same problem with a Sanyo. When the set shuts off, apply freeze spray to the on/off relay in the power supply. If the set comes on, this is the problem. The relay would open when it warmed up, then close when it cooled off. I replace this one about 4 months ago, and the set is still working fine. Good luck.

Reply to
Golf

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.