kizo, mike k
Thanks for the reply.
So, have you had the same problem with this model?
This Pbx has PNLP8532 power supply (I have a schematic diagram)
Impossible to think of changing the Power Supply in my country due to costs, in addition, Panasonic is gone.
I am a repair service technician, I will try to repair it, but for now I have no clues, but if they assure me that the same thing happened, and that the Power Supply was responsible for the defect, I can try
Thanks in advance!