Author Topic: Behringer BX4500 voltage issues.  (Read 127 times)

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Offline average joe strummer

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Behringer BX4500 voltage issues.
« on: December 16, 2019, 11:09:43 pm »
Hello all

Got a problem with the power amp board on this lovely (sarcastic) bass head. Power rail voltages are miles out. See attached schematic. All measured voltages are in red.

So far, Ive had odd continuity readings across D4 & D6 but the tested good out of circuit, checked pretty much all other components and seem to be OK. I'm guessing there is a short to ground, but cant seem to track it down. I've re-flowed solder to all the transistors & filter caps.

Tks for any pointers anyone mat have.


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