I'm posting this here because this thing is basically an amp... OK, so the three electrolytics on the board of by fender reverb unit needed replacing, so I replaced them. No sweat... Anyhow, I seem to have made a mistake. All are inserted correctly, and I checked after replacing each one (I was working right-to-left looking from the back of the cabinet) and the first two I did fine. Well, after the last one, the unit won't power up. Fuse is fine, not blown. I noticed that one of the twisted pair of black wires coming off the 12AT7 toward the 6K6 (heater supply wires?) has come disconnected... the other is connected to pin 2 of the 6K6. The wire in question is connected to pin 9 of the 12AT7 on one end... what I need to know is where the other end should connect to. Any help (especially pics!) would be appreciated. I have the schematic and layout, but they don't show how the heater supply wires are wired up. I've done a few repairs but I'm sort of a novice so sorry if this is a dumb question. Thanks.