Hi, my first post here..
I'm trying to repair a fender 112 deluxe. The power transistors Q1,2,10,11 keep blowing as well as the fuse. The amp will power up for approximately a minute before this happens.
I've taken the powers transistors out of the board and it lasts over 10mins without the fuse blowing.

Link to schematic: http://www.electronicstudio.net/au-schem-fender.html
Thanks in advance for any ideas of what to have a look at next.
Sam