[Help] Bihringer EUROPOWER PMX2000

[smarkies]

Good day to all,

I have a big problem with my power amp. The circuit board board burned out :eek:. I already bring this to technicians still no help. So I have to do this my own, since I have a some experience in electronics.

If any one can share a pic of schematic/circuit diagram only that part is appreciated.

Thank you. :)

[Enzo]

I just rebuilt one of those recently. With all that stuff burnt up, I would assume your output transistors are also destroyed.

Behringer service centers are prevented by a signed agreement from distributing schematics. Most of the part values are printed on the board, and the two channels are identical.

Behringer prices tend not to be high prices. With all that damage, and thinking of reliability in the long term, you might consider replacing the amplifier module completely. The power amp module is a Behringer type P2502 Europower. You might contact a Behringer dealer for a proce on that one where you are. If it is under $100, considering the labor required in rebuilding the burnt ones, plus all the parts, it might be worth the price. The whole mixer sells new for only $300.

You have nothing to lose by contacting Behringer directly and asking for a schematic, the worst that could happen is they say "no."

[embiar]

Here is a picture of a working PC board with Identifiable parts I hope this helps you, In return I have a PMX 2000 which my freind hooked up a power amp output to the PMX2k power amp input just enough to burn the output resistors on the speaker jack pc card & like you I can not identify the resistors anymore they are titled R5 & R6 attaced are pictures of the back of the card (for identifacation) & a closeup of the R5 resistor location if yours is intact please picture it for me or if anyone know the resistor I need please advise, Thanks

[Enzo]

Those should be 22 ohms.

[jrfrond]

We are the primary Behringer USA parts distributor, and at this point, PC boards and modules are NOT available to service centers (including us). This might change in the future, but for now, it is what it is. The answer to schematics is a solid "no". We are bound by a Non-Disclosure Agreement with Behringer USA and Behringer GmbH.

In addition, the PMX2000 is now old technology, and is superseded by the PMH2000 which uses Cool Audio power amp IC's with a modulated digital power supply. The modules, even if they were available, are not backwards compatible between the two.

Sorry to be the bearer of bad news, but we DO carry most of the components, including odd-sized caps, pots, encoders, etc.

[Enzo]

I am also a Behringer service center. When I order parts from them, they come out of Memphis though. The problem seems to be one of stock. The power amp modules are available off and on. I have shown copies of the invoices to the office in Washington, the Memphis people seem to be way overcharging shipping weight on the warranty parts.

The PMH3000 would occasionally blow up a power amp, and I can usually fix them, but they have been available when burnt beyond repair. They are single amp modules. Now there is the PMP3000 taking the place in the lineup, it has a dual power amp and so far they are not available. But that seems to be off and on either way. Have had luck ordering the DFX boards.

So far all my PMH2000 PA rebuilds have been successful. (knocking wood.)

If your stock is better than what Washington draws off, I might order from you. Parts NEVER come from them promptly. Took them MONTHs to identify and then to send the little bulbs in the crossovers of a B215. Could not find them in the bulb market. Speakers might come soon, might not.

SO far I've needed few pots and sliders. Knobs we got, from scrapped units.

[visoundguy]

Would someone be able to identify the output transistors on the Board?

[Enzo]

It should be visible printed on the parts, plus they also silk screen the numbers in tiny print next to each part. They are 2SC5200 and 2SA1943 - a very common power output pair.