There are five amplifiers in the STR-DE425, three have discrete output stages with IC drivers, the other two are single IC's. You need to test the outputs from them to see if one has a DC standing voltage on it, all five connect into the same protection circuit. Probably one of the easiest places to measure is on the speaker switching relays!.Eleco wizz said:Hi There
Is anyone familiar with the sony Str-de-425 as mine goes into protect mode all the time.
I would like to get a wiring diagram if possible