Behringer EUROPOWER PMP2000 Support Question
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Question posted by gregsampson on November 22nd, 2020
Power Amp Shuts Down During When In Use.
This amp is used at local jam. Usually have 5 xlr inputs and 1 - 1/4 input used.The amp will power down and restart intermittently during usage?I have verified speakers, wiring to speakers. Mic's and cables are good. If single input used the unit works without interruption
Current Answers
Answer #1: Posted by INIMITABLE on November 23rd, 2020 4:07 AM
The mixer has SOME circuit protection and if a short develops on a speaker or cabling, the circuit will shut down that channel.
ESSENTIALLY, if you use such a cable do NOT let the barrel of the "A" channel touch or connect to the system ground as the BARREL of the "A" channel is the HOT lead. The "B" channel barrel is ground.
If you EVER blow a fuse do NOT replace it before servicing the unit as you will cause massive damage within the unit... I know, I have repaired several of these units.
I suspect you MAY be having a speaker or cabling shorting which shuts down the amp when the protection circuits activate. If you can turn off the amp and restart it after 30 seconds this is the likely cause... REMEMBER do NOT go below 4 ohms per channel on the speakers.
Another thing, if you use the MAIN L and R output 1/4 inch jacks, those MUST be TRS balanced lines. Do NOT plug 1/4 inch MONO plugs into those particular jacks.
ESSENTIALLY, if you use such a cable do NOT let the barrel of the "A" channel touch or connect to the system ground as the BARREL of the "A" channel is the HOT lead. The "B" channel barrel is ground.
If you EVER blow a fuse do NOT replace it before servicing the unit as you will cause massive damage within the unit... I know, I have repaired several of these units.
I suspect you MAY be having a speaker or cabling shorting which shuts down the amp when the protection circuits activate. If you can turn off the amp and restart it after 30 seconds this is the likely cause... REMEMBER do NOT go below 4 ohms per channel on the speakers.
Another thing, if you use the MAIN L and R output 1/4 inch jacks, those MUST be TRS balanced lines. Do NOT plug 1/4 inch MONO plugs into those particular jacks.
I hope this is helpful? PLEASE "ACCEPT" and mark it "HELPFUL" to complement my little effort. Hope to bring you more detailed answers
-INIMITABLE
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