What is up is one of the two power amps is blown... I know this problem... It is USUALLY the rearmost channel which goes to the left Speakon faacing the back. Weak insulation between layers of the multilayer circuit board arcs and fries three transistors and a diode and sometimes a few more components. It takes a lot of skill to restore the module and is beyond most repair shops. A whole new module costs about $155 from Full Compass. The amp is an HCA2400 module, but you MAY need the Behringer part number to order it from Full Compass. Also please read my tip on Fixya for PMP mixers regarding the hazard when using 1/4 inch plugs from the Speakon connectors... the Channel A sleeve is the "hot", not the tip and if you ground the sleeve, goodbye channel A...
I have this mixer and I am curious to what you mean by "Ground The Sleeve"?
If you use a Speakon to 1/4 inch speaker cable, one of the channels has the sleeve of the 1/4 inch as ground and the tip as the hot lead... HOWEVER the othe channel is the opposite. If something grounds that sleeve on that channel the amp will fry. The sleeve is the barrel of the 1/4 inch plug and sometimes they have a metal cover as well and it is easy to have something that is grounded touch this and blow the amp.
Fred, thanks so much for that explanation, this last comment explains the trouble I've been having with my churches sound system. i sent back 2 pmp 1000 to the manufacturer now thinking i was getting defective ones, however at our church the 1/4 speaker plugs are mounted in a single metal plate where they go into the wall im not sure who set it up like that but i will definitely be changing that now. Thanks a bunch
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Bun? seara am un mixer europower pmh5000 nu porne?te ?l pun ?n priza ?i nimic nu se aprinde
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