Friends,
Some 6 months ago my Boston active subwoofer died in me with a flash. It blew a fuse and I was brave or stupid or both enogh to short the circuit braker to see what's going on. No chances with mains power taken though, all safety obeyed. The guilty thing turned up quckly, burning one of the PCB tracks to mid terminal of MDF11N60 MOSFET on one of the boards that cannot be anything else than one of the power supplies.
Now I finally have some discressionary energy to look at the thing.
Clearly, the evidence shows, the MOSFET is to blame. At least for the first instance. It is not difficult to replace, but as I'm waiting for the thing to arrive, I'm wondering if a blown MOSFET is a typical thing to happen and if I should look further for the reason for this.
Sorry not to have any schematics or visuals to provide. Any reactions appreciated. Thank you,
/Edmunds
Some 6 months ago my Boston active subwoofer died in me with a flash. It blew a fuse and I was brave or stupid or both enogh to short the circuit braker to see what's going on. No chances with mains power taken though, all safety obeyed. The guilty thing turned up quckly, burning one of the PCB tracks to mid terminal of MDF11N60 MOSFET on one of the boards that cannot be anything else than one of the power supplies.
Now I finally have some discressionary energy to look at the thing.
Clearly, the evidence shows, the MOSFET is to blame. At least for the first instance. It is not difficult to replace, but as I'm waiting for the thing to arrive, I'm wondering if a blown MOSFET is a typical thing to happen and if I should look further for the reason for this.
Sorry not to have any schematics or visuals to provide. Any reactions appreciated. Thank you,
/Edmunds