Hi, appliance won't stay switched off when switched off via remote or standby switch on appliance. It turns off for a few seconds then switches back on withbthe welcome message again. Only way to stop it turning back on is at the wall
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This is the service manual.
This is the standby control circuit.
My first guess is the relay on the lower right is stuck, or the control circuit has a malfunction and is holding the relay closed.
Q575 turns it off/on and is controlled directly by the micro. Standby/SysV6 circuitry on the micro schematic sheet may also be involved.
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I just bought one of these at a thrift store and everything works on it for me. Looking for the user manual online and could only find Panasonic SC-PM17 instead of SA -PM17. It seems to be the same model. In searching for it I noticed lots of people asking how to 1. Turn off demo mode (which keeps you from turning the unit off) and 2. Set the clock.
The manual explains: You can't turn off Demo mode until you set the clock. AND, you can only set the clock with the remote. I don't have the remote and I bet a lot of other people don't either.
Hope this helps!
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