Random shut off

[mishak]

So I just finished building my crack amplifier.  All the resistance checks and voltages checked out.  I got it fired up and it was working great, for about 20 minutes.  Then out of no where, the amplifier shut off and I haven't been able to get it to turn back on.  Everything seems ok when I look under the hood.  I am very new to this, and this was my first DIY project.  Any help on where even to start would be appreciated!  Thanks.

Mark

 

[borism]

Did you check the fuse?

 

[Doc B]

Yes, check the fuse and if it is OK then go back and take new resistance measurements. One possible scenario is that a solder joint was missed and lost contact as the amp warmed up. That might show up as a bad resistance reading somewhere. Let us know your result.