problem with early eighties renown solo series

[Les Talint]

Just before one of the fuses blew, out of no where the amp was humming violently. as i have to wait to replace the fuse, i was wondering if this sounds familiar and if the amp is burned. I worry the fuse wont be the actual solution

[KTB]

Like has a blown Output transistor or short in the power supply caused by a bad either output transistor or driver. Also check the speaker and verify it is ok as that will cause hum and blown fuses also.

[Les Talint]

ok, so the speakers are fine. ill have the replacement fuse tomorrow. ill see what happens. thanks

[e-merlin]

I'm not familiar with this amp, but if it has tubes, pull them, then change the fuse (simply as a troubleshooting procedure). If the amp fires up and the fuse doesn't blow, you can pretty much count on a bad tube causing the problem.

[KTB]

No tubes, SS amp and OP if you put a new fuse in it I can almost guarantee you it will blow again however it would be wise to disconnect the speaker before trying again. If it blow without a speaker connected I'd be willing to bet the output transistors are gone as are the rectifiers in the power supply.