Hi everyone.
I'm needing some assistance with my Alesis M1 Active MK2 monitors.
Recently got given these speakers from a friend, I knew that there was a problem with them and thought it could possibly be a fuse. After replacing the fuses and trying to power on again, pop. Both fuses blew immediately.
I actually took them into the sound repair shop in my area where they were sent back with no progress. They informed me these power supplies were discontinued. I was kind of hoping they would repair the board but that's clearly not what they do.
Anyways.. Now I have the speakers back. I took the boards out and had a close look to find there are definitely blown capacitors. (the big ones) with some burn scorch marking around the area.
Clearly there is a hard shorting happening in this area hence why the fuses blew immediately (1 even burst)
It's in the same area for both boards. Just the one is worse than the other. The capacitor on 1 board is actually bulging or enlarged.
I plan to de-solder both big capacitors on both boards as a start. And also all the resistors around them that may have been damaged by burning.
My only concern at this point is where that burn is there is a connection hole. As if something was meant to be there. But nothing is there anymore. On the one board it's burnt out completely. Can anyone shed light on this. Or is it just meant to be blank.
Also when replacing all these items on the boards. Should I be replacing any other components that might have been damaged in the circuit?
I'm needing some assistance with my Alesis M1 Active MK2 monitors.
Recently got given these speakers from a friend, I knew that there was a problem with them and thought it could possibly be a fuse. After replacing the fuses and trying to power on again, pop. Both fuses blew immediately.
I actually took them into the sound repair shop in my area where they were sent back with no progress. They informed me these power supplies were discontinued. I was kind of hoping they would repair the board but that's clearly not what they do.
Anyways.. Now I have the speakers back. I took the boards out and had a close look to find there are definitely blown capacitors. (the big ones) with some burn scorch marking around the area.
Clearly there is a hard shorting happening in this area hence why the fuses blew immediately (1 even burst)
It's in the same area for both boards. Just the one is worse than the other. The capacitor on 1 board is actually bulging or enlarged.
I plan to de-solder both big capacitors on both boards as a start. And also all the resistors around them that may have been damaged by burning.
My only concern at this point is where that burn is there is a connection hole. As if something was meant to be there. But nothing is there anymore. On the one board it's burnt out completely. Can anyone shed light on this. Or is it just meant to be blank.
Also when replacing all these items on the boards. Should I be replacing any other components that might have been damaged in the circuit?
