Panasonic 42x5 stuck in selfcheck mode
Official website of Panasonic (
Panasonic - Troubleshooting - The television is frozen / locked up.) tells the following procedure:-
Plasma TV
Try the following to restore the television operation.
- Unplug the television from the electric outlet for 1 minute. Plug back in and test.
- Unplug the television from the electric outlet for 1 minute. Unplug all external devices connected to the television. Plug the television back in to the electrical outlet (with no external devices connected. and test. If the television now operates, you may have a problem with one of the external devices. Plug the devices back in one at a time to determine the source of the problem.
- Reset the television.
- The reset is not for models: CX400, CX420, AS530, GT30, ST60 and PX60 series.
To Reset by buttons on TV and Remote.
- Television power should be on.
- Hold [VOL - ] ON TELEVISION & [MENU] ON REMOTE for more than five seconds.
- To exit - disconnect the AC line
9/22/2023 2:02:19 PM •
Panasonic...
•
Answered
on Sep 22, 2023
I have a Panasonic SC-HT75
Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.
9/16/2023 7:30:19 PM •
Panasonic...
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Answered
on Sep 16, 2023
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