Boss Dr.202 powers up but no sound

Just picked up one of these 202’s and to my disappointment no sound coming out of both the headphone jacks or audio out… Midi is working…HELP!

It can be several different things. According to the service manual, the output and headphone out are fed from the same signal path. There’s also a mute Circuit that might be the problem. Not sure what your background is, but it might require a scope to figure out what’s going on. For instance, your’re going to want to try to trace the signal back before the Master volume control.

Here is the the service manual Im looking at.

As it turns out someone had muted all the sounds… I did a factory reset and it works like a charm! Thank you for responding! Now I have a SP-202 but it does not power up… Always something…