I tried out the H7826 PSU that came with my TURBOchannel Extender after cleaning up the board and replacing a number of the electrolytic capacitors. Naturally, it doesn't work :(
Having traced the signals, I can see an alternating voltage going from the inverter into the transformer on the primary side, but on the secondary side I see no signal whatever on any of the output windings (I am not sure how many there are, but I think at least two). Before I take out the transformer, is there anything other than a failure of the transformer that could cause such a problem? Thanks Rob
