Alesis RA300 Short

drobs

Member
2013-04-30 5:09 pm
I have an Alesis RA300 with a short. The output drops in/out. I am a total noob and have no idea how to investigate the problem but I'd like to take a stab at fixing it myself. Any advices where to start with diagnosing the problem? I have done some soldering of guitar pickups and cables but this is totally new to me.
Thanks
 

drobs

Member
2013-04-30 5:09 pm
One amp may have DC at the output. To find the bad amp, measure the DC at the output inductor. The output inductor is an easy way to access each amp before the output relay. I have repaired several Alesis amps, PS filter caps have been bad on many units.

You can find the service manual on line.

Thanks for the info. Completely over my head :)scratch1:), but I'll look for that manual on line and see if things fall into place. Cheers.