Only right channel working after speedball mod. [resolved]

[Paul Birkeland]

Can you provide some photos of the installed Speedball board?

The only real possibility that the collective wisdom is coming up with is some kind of short between B6 and B5 that is providing the path required to produce the symptoms you describe.

[sini]

So I forgot that I left it on... and decided to take some more readings. 2 <-> B+ is still disconnected. 9/O rose to 12.5 I checked other parts of the board, and the middle pin of the transisor is also 12.5, but none of the rest of the board I tested has any far-from-0 readings. Do we think that it's this larger board, and not the two smaller ones? I can re-touch all of the solder points. I'll directly attach the photo of the underside of the board prior to my re-install the other day.

[sini]

Also, from my earlier post, here are shots of all my boards: imgur.com/a/m5feZ

Quick question... when you say B5/B6... are you refering to the power tube pinout or are these unlabeled pins on the circuit board?

[sini]

So I resoldered all of the connections on the PCB and rotated it 180 degrees and used the mirrored contacts for mounting. The LEDs no longer light on the board without the tube. 7 measures 124 and 9 measures 128 now.

I get signal from both channels now when I pass audio through it  Does orientation matter, or did I more likelyinadvertantly fix something when resoldering?

[Paul Birkeland]

did I more likelyinadvertantly fix something when resoldering?

I would suspect this.

There's also just the slightest chance that the black wire going from "O" on the offending side had a break in it, but more than likely you simply fixed a solder joint that wasn't quite solid.

[Deluk]

Thanks. I was suspicious of the washers. They show on some builds and not others. Some maybe correct but hidden.