Hi Chicks...Binkman here (jeff) Do you work on sony's? I have an str-333es thats driving me bonkers. I got the power supply settled down and prior to that got the idle current set. I'm back to the main board to figure out why this keeps kicking the B+/- voltage down /protect circuit. manual says 59v from the PS but I'm getting 50.8v ish (I think that is normal as aside from the specs because it ran after some initial solder fixes.) when it kicks into P mode it drops to 38.8v . I'm missing something because this v drop is intermittent. I'll go back and check the circuits again (all re-soldered and grounds look good, rebuilt the main board p.s. all good.) Maybe you have some insight on this protection mode. thanks. If you don't want to bother I understand.