Crack + Speedball Channel Imbalance + Voltage Checks

[son_et_lumiere]

In case anyone has seen this problem before:

One channel of a newly-built (new construction) Crack + Speedball is extremely quiet, nearly inaudible except when volume maximized.

Voltage checks yield that terminals 5 and 9 are reading low: 5 is at 3V (70) and 9 is at 60V (100).

The TIP50 associated with the low voltage channel is not heating up; the other TIP50 is getting very hot.  As the Crack worked immediately before I installed the Speedball; I'm ruling out the tubes and the caps.  Any ideas?  I've already resoldered all joints, and verified that transistors are installed in the correct location and correct orientation.  All LEDs light.

Any ideas?

[Paul Birkeland]

Voltage checks yield that terminals 5 and 9 are reading low: 5 is at 3V (70) and 9 is at 60V (100).

Start by getting the voltage at T5 up.  Based on what you're describing, I would imagine that the center leg of the MJE350 feeding T5 is not adequately soldered.

-PB