Hello !
Maybe someone has encountered this type of defect before, a location would shorten the repair time.
Panasonic SA-PT 150 which has all the voltages ok from the source, checked one by one (I haven't checked the regular voltages on the board yet), has a strange behavior, starts from "Power On" -> displays AUX and freezes like this or starts from "Open / Close" -> displays "Open" and freezes like that.
Before and after freezing, do not accept any other commands.
Because I worked more on it today, I had the opportunity to notice that the finals heat up after a while, 20-30 minutes, about 60 ° C - which is much, I suppose at least one final is burned. I will try to isolate pin 5 STBY and pin 9 MUTE and power supply and see if they work, at least to see which consumes so much. I don't know if this is where the "freezing" comes from.
There is something strange, on the main board it is marked -13V at pin 10 connector H2002 (power plug) although on the diagram it is marked VCC_CTRL and in reality they are + 0.7V there. The same for pin 4 connector H2002 where it is marked + 13V although on the diagram and in reality it is + 9.1V.
Thanks.
Maybe someone has encountered this type of defect before, a location would shorten the repair time.
Panasonic SA-PT 150 which has all the voltages ok from the source, checked one by one (I haven't checked the regular voltages on the board yet), has a strange behavior, starts from "Power On" -> displays AUX and freezes like this or starts from "Open / Close" -> displays "Open" and freezes like that.
Before and after freezing, do not accept any other commands.
Because I worked more on it today, I had the opportunity to notice that the finals heat up after a while, 20-30 minutes, about 60 ° C - which is much, I suppose at least one final is burned. I will try to isolate pin 5 STBY and pin 9 MUTE and power supply and see if they work, at least to see which consumes so much. I don't know if this is where the "freezing" comes from.
There is something strange, on the main board it is marked -13V at pin 10 connector H2002 (power plug) although on the diagram it is marked VCC_CTRL and in reality they are + 0.7V there. The same for pin 4 connector H2002 where it is marked + 13V although on the diagram and in reality it is + 9.1V.
Thanks.
