Hartke B120

[lowell]

Not getting a low V supply in this amp.

[J M Fahey]

What is "a low V supply" ?

[soundguruman]

Besides the exploding power amplifier module?
The low voltage supply is going to be like +15VDC, -15VDC, to power the op amps, preamp.

[lowell]

Yeah I'm just having a tough time locating that supply... I'll dig into today though and trace it.

[J M Fahey]

Hint: find Op Amp pins 4 and 8, and follow the tracks.
They should lead you there.

[lowell]

JM thanks. For some reason, maybe I didn't have a good ground before, the low v supplies are there. My bad. The gain control works so I "hear" the amp, but still no signal. It's something between the jack and first opamp I believe. I just contacted hartke and they're sending a schem.