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Any Schematics for Behringer EPA40 Portable PA?

I got this used, "untested", and it appears to be non-functional. I haven't checked out all the pieces yet, but operating off the AC adapter, I get a loud "pop" when I turn it on, but absolute silence from the microphone. It may just be that the mic is dead. I'll test the line input next and if that works, check it with a known good mic.

I'm trying to charge the battery now, although I suspect it is toast. Nominal 12V sealed lead acid, and it read 5V open circuit. After about half an hour, neither the battery nor the charger are particularly warm.

I'm guessing I will have to dig into the innards. Does anyone have any experience with these gadgets, or better yet, a schematic?

Thanks!

Doug White

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Doug White
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Doug White wrote in news:XnsA2BF94C20419gwhitealummitedu@69.16.186.7:

Well, somedays you get lucky. The mic cable had the center conductor broken in the XLR plug. I'm not wild about the startup "pop", or the health of the battery, but the basic PA function works just fine.

The battery voltage seems to be creeping up, so we'll see. New ones are only $15, so it's not a big deal if the battery is shot.

I only paid $18 for the whole system (nominally $5 + $13 shipping), so I can't complain. New they are ~ $120, and this one is is pristine condition.

I wish they were all this easy...

Doug White

Reply to
Doug White

"Doug White"

** Behringer are extremely secretive about their schematics - they supply them to "authorised" repairers only and warn them not to supply others.

Essentially it is an ill thought out tactic to prevent "unauthorised" repairs doing any Behringer service either in or out of the warranty period. As Behringer gear is chock full of SMD crap and PCB swapping is the name of the game - most independent repair businesses are happy to go along.

Customers however are being mightily screwed - with no choice of repairer and often only one place in a city or even a whole country available to do the work.

Also, if Behringer ever decide or need to find a replacement - people with experience on Behringer gear are simply non existent.

... Phil

Reply to
Phil Allison

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