Black Magic 20w tube amp problems

One of my 20w per/ch black magic has a problem.

In mono mode the swich on the rear has to be set in the stereo mode. Also have to use the right channel rca plug in and speaker plug ins. This is opposite to the instruction manual. It work perfectly fine if setup this way for mono block application.

In stereo mode it plays the right channel thru both speakers.

Any ideas??? I might send it to the Toms if they think it can be fixed by Carverfest.

Sounds like the stereo/mono switch is backward. When you switch it to stereo it's really running mono.

ummm, carverfest, we can fix it....

Decisions, decisions.....

Send to a qualified amp repair business...
....or....
Bring to Carverfest and let a bunch of either drunk or hungover friends work on it.....

Think Ill go with Carverfest

Decisions, decisions.....

Send to a qualified amp repair business...
....or....
Bring to Carverfest and let a bunch of either drunk or hungover friends work on it.....

Think Ill go with Carverfest

A wise choice Obiwan.

Bring to Carverfest and let a bunch of either drunk or hungover friends work on it.....

We do some of our best work that way!!!!!

Sounds like fun guys....lets do this!!!!

Decisions, decisions.....

Send to a qualified amp repair business...
....or....
Bring to Carverfest and let a bunch of either drunk or hungover friends work on it.....

Think Ill go with Carverfest

Eric.
Real good choice, so much knowledge at Carverfest
you might be lucky and get Bob working on it
like I did with my Silver Seven's

Brian

I wonder if the switch is just upside down, in regards to the mono/stereo tag

Decisions, decisions.....

Send to a qualified amp repair business...
....or....
Bring to Carverfest and let a bunch of either drunk or hungover friends work on it.....

Think Ill go with Carverfest

May have found the problem. The mono/stereo switch is definately wired backward compared to my other amp whick doenst really bother me. But we definately have a loose wire thats supposed to go to the left rca input.

Notice the little red box(mono/stereo switch), the wires are opposite each other.

DSC00068.JPG (61.27 KiB) Viewed 618 times

White wire not connected to the left rca inpt when I opened her up.

DSC00071.JPG (60.62 KiB) Viewed 618 times

I wonder if the workmanship will get any better with Emotiva at the reins. ...

I wonder if the workmanship will get any better with Emotiva at the reins. ...

My amp probably built during their two week trial period before they took over

Good eye Eric. Looks like I won't have to bring my soldering iron now and run the risk of burning myself or setting the place on fire!

Good eye Eric. Looks like I won't have to bring my soldering iron now and run the risk of burning myself or setting the place on fire!

Hey bring it just in case...theres no telling what Ill tear up between now and then...LOL In case of fire we can do the soldering at your cabin