B-52 Stealth LG-100A No Sound

[misterc57]

Trying to find a schematic and suggestions.

No sound to speaker or headphones. There is signal at the SEND jack. Tried jumping the SEND and RETURN jacks to no avail.

I'm encouraged in thinking the output section is okay as there is no excessive current and I hear static out the speaker if I probe J8 on the power/output board, which is reading around 52 VDC.

Without the schematic I am going to try and figure out the signal path.

Thank you, Mark

[x-pro]

https://music-electronics-forum.com/...h-no-schematic

[x-pro]

might be similar

[DrGonz78]

Maybe you already had this and mentioned it. Either way I am posting it to see. They use the same outputs on the power amps so they are probably nearly identical.

[misterc57]

Fixed. Using this schematic

Signal dropped between Q1 and Q2. Moving Q2 brought the signal back. I reflowed Q2 even though connections looked good.

Good sounding amp!

Thank you all!

KH120 rear amplifier 20071212.pdf