Great answer, thank you. Spookily I have taken the leads out and it seems to be OK at the mo.

Still some frying bacon going on but we can maybe discuss that later.  :dbtu:

Quote from: Roly on August 30, 2012, 07:52:43 AM
First thing, is the speaker cone moving hard forwards or backwards when the amp is switched on, or staying roughly in the rest position?  If it is moving to one end of its travel and staying there it must be disconnected to avoid damaging it while other tests are carried out.

Second thing; take a known good lead and bridge the Effects Loop Send and Return - any change?

Try feeding a signal into the Effects Return, say from an MP3 player or the like - any response?

Try feeding the Effects Send into another amp - any response?

These test will help narrow down which section of the amp is playing up.

Hi Guys

Newby to this forum. I found it because I have the same amp problem.

I tried "take a known good lead and bridge the Effects Loop Send and Return" and it made huge difference so can you help me now. What is my next step please?