Hi all, wishing you all good health at these testing times.
I have an Alpine MRV1507 on the bench, it's pulling excessive current a few seconds after applying remote power.
I've tested the power supply and although it's had a previous repair it powers up and idles fine if I disconnect the 6 pin molex which connects to the output board.
All the output transistors also test good.
Q819 has been replaced with a 2SD600 which had a loose solder pad which I have resoldered.
Initially it would power up then trip my power supply after 8-10 seconds, now it trips within a few seconds.
Any help appreciated, thanks
I have an Alpine MRV1507 on the bench, it's pulling excessive current a few seconds after applying remote power.
I've tested the power supply and although it's had a previous repair it powers up and idles fine if I disconnect the 6 pin molex which connects to the output board.
All the output transistors also test good.
Q819 has been replaced with a 2SD600 which had a loose solder pad which I have resoldered.
Initially it would power up then trip my power supply after 8-10 seconds, now it trips within a few seconds.
Any help appreciated, thanks