Hello, I have a Panasonic TV which does not switch on. The power supply board has two diodes that appear short circuit (<1ohm either way). They are labelled Q165A and I suspect they may be transient suppression diodes as they are part of the transformer circuit. Problem is are these common cathode, common anode or what? Unless I can find out I can't really fix the board. I've not found a circuit diagram either. PCB reference is TNPA5806 which seems to be used in a number of Panasonic Viera TVs.
Any ideas appreciated.
Any ideas appreciated.