Amp repair question. Help my nephew out please. - Guitars101

rocknrolldork · 05-09-2007, 10:21 AM

My nephew is playing a show for his high school buddies this week so I let him borrow my Marshall cab. He liked the sound of my Super Bassman so his dad bought him a Fender blackface Bassman. I've never seen it but I assume it looks much like this:

Well.... Matt hooked his 4 ohm head into the 8/16 ohm side of the cabinet. It didn't hurt the cab a bit, but he said his head squealed then smoked a little bit right above a tube then the fuse blew. He said he replaced the fuse, hooked it up correctly and turned it on and it is making a loud hum.

I told him to take it to be repaired because he probably burned something up. He thinks it's just a tube. Anyone on here have any experience or advice about this?

**VHF** · 05-09-2007, 05:35 PM

What he did with the cabinet did not hurt the amp at all....there is just no way. The amp most likely has a bad power tube. I would find/borrow some known good tubes and try that first before taking to a shop.

rocknrolldork · 05-15-2007, 12:15 PM

Quote:

Originally Posted by VHF

What he did with the cabinet did not hurt the amp at all....there is just no way. The amp most likely has a bad power tube. I would find/borrow some known good tubes and try that first before taking to a shop.

Thanks VHF!

It burned up a resistor. Easy fix.