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I got a behringer 3242x mixer without a power supply unit. which model can i use?

I know a friend with a eurodesk 24 ch mixer. is that power supply the same as the euridesk 3242x, so i can try it if it still works.

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You need the correct rackmount psu, rated at 150 watts, I think it uses more than one rail volts so you can't use any old supply.

Posted on May 15, 2014

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Posted on Jan 02, 2017

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  • 5603 Answers

SOURCE: Need Behringer Eurorack mixer power supply connector

Those were used for mic connectors at one time,,, they are related to the Amp 91-MC3F family of connectors and those are out of production and they are demanding $20 to $50 for one connector.

That is a ridiculous price and I would be tempted to swap out the connector for a more available design.

On eBay item 250401122616 is one but they want $13 pus $11 shipping which is a rip off.

These were used on some OLD CD radio mics.

Posted on Dec 15, 2009

  • 5603 Answers

SOURCE: Behringer Xenyx 1622FX. Power supply has failed,

Suspect a broken circuit trace or broken solder. If they use a 7805 three terminal regulator, check the solder around those pins...
Berhinger does NOT release schematics except to their service facilities... I know... I have tried... I repaair a lot of their stuff and have to trace out the circuits.

Power supply circuits are rather easy except for the switching regulators if they have failed totally.

If only the +5 is dead, you should be only a filter cap and a diode or two away from the problem... Transformer leads and electrolytic leads with their weight are favorite to pull out of solder... On Behringer, often the traces are narrow and can have a crack in them.

Posted on Jan 13, 2010

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SOURCE: Behringer XENYX 1622FX, won't power on. Phantom power works(?)

After reviewing the schematic, I don't understand how the Phantom power can REMAIN on with the power switch off... this CANNOT occur except for what energy is left in the 48 volt supply filter cap... This might last for minutes after the fuse went... UNLESS you have devices connected which are backfeeding the 48 volts. (which would be a disaster)

The 48 volts, +/- 12 volts and +/- 15 volts and the +5 volts ALL come from the SAME switching power supply. I suspect one of the filter caps went or the primary switching regulator a TDP245Y chip.

You should ONLY work on the line side of this using an ISOLATION transformer since the line side has lethal voltages.

To do testing, one replaces the fuse and puts a 60 Watt light bulb in series with the hot side of the inout line. The lamp "acts" as a resetable fuse and limits the current for testing. When all is well again, the lamp will remain out with the power flowing through it.

The D1 diode bridge and C7 input rectifier and filter are first things to check. You can do those with an ohmmeter.

I will caution you to ALWAYS power any and all equipment from the SAME power source. Plugging in devices from across the room will set up ground loops and any ground fault will fry equipment.

Posted on Apr 05, 2010

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SOURCE: Power supply cooked

There isn't anything in the power supply you cannot rebuild except the transformer.

BUT you should verify that something in the mixer didn't short out and damage the supply.

After you relace the smoked parts (likely the TOP245Y offline regulator chip is gonzo... then you use this trick to restart the unit safely:

Put a 60 Watt light bulb in series with the hot side of the input power line. I would recommend you use an ISOLATION transformer when working on the power line side of this for safety.

Posted on Apr 26, 2010

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SOURCE: My Behringer XENYX 2442FX Mixer does not power up,

You should find +/-15 volts and +5 volts as well as the phantom power... but that light can come on at much lower than desired voltage.

Note that the regulators are current limited so a short on the mixer board can kill one of the voltages.... but you are not getting any input from teh switching portion of the regulator so the switching part of the supply is apparently dead. To replace the supply you would have to call Behringer at 1-425-672-0816 to get the part number and an incident number and then call FullCompass which is their part distributor now.

When working on a switching power supply, use an isolation transformer for safety and use a 60 watt lamp in series with the power cord to limit current during testing.

The circuitry will be SIMILAR to the power supply found on page 9 of schematic you can download at:

http://elektrotanya.com/behringer_ub1204fx_pro.pdf/download.html

Posted on Dec 15, 2010

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Hi Bryant...
That particular power supply is hard to come across. There is a brand new one for your mixer on E-bay for $200.00 here:
http://www.ebay.com/itm/Behringer-Eurodesk-150-Watt-Power-Supply-For-Mixers-MX2442A-MX3282A-NEW-/252274097139
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