I have a Technics SU-V85A. A friend plugged an mp3 player into the Aux 1 input and the amp popped and went into protection mode. I couldn't get it to recover. I found the schematics and started doing some checking. My probe slipped and I shorted a cap. and a resister. In trying to replace them I tried a 1/4 watt 22 Ohm resister and it fried. I have a problem with the resistor at R477 on the schematic for the Voltage control Amp. circuit. it says it is a 22 Ohm resistor but no clue as to weather it is a 1/4 watt or a 1/2 watt. I have tried 1/4 watt and it fried and popped the cap at C463. Anyone have any idea?
The only thing that could pop C463 is reversed polarity as it will stand 100Volts across it. R477 supplies IC401 which I would think has been damaged.
- Status
- Not open for further replies.