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Schematics for behringer mixer SL3242FX-Pro Power Supply

Hello sir,im meshak by name i have problem with the power pack of the mixer sl3242fx-pro the component are blown beyon identification please i need the circuit to eneble me figure the voltages of every stages.thank for understanding

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Posted on Jan 02, 2017

  • 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

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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: How do i hook up my new behringer pmp 5000 mixer

Passive loudspeakers are connected to the two "Speakon" connectors on the back of the unit. BUY GOOD cables for your speakers!!!! Whatever you do don't have a speaker line come loose while driving audio out !!! You will arc- out the rear-most power amp... I know, I repaired two of these now with the problem.

Connect the recording device to either the "tape OUT" RCA jacks or either of the pairs of MAIN out TRS jacks.

Set the slide switch for the MAIN L/MAIN R (upper position) leave this in this position unless you understand what the other positions are for to avoid damage. You will NOT need the other positions.

Further: Power ALL interconnect devices from the SAME receptacle source to avoid ground loops and possible damage.

YOUR passive speakers should be rated at least 300 Watts RMS continuos power handling or 600 Watts peaks.

Drive consumer stereo speakers with this and you will smoke the speakers and MAYBE blow the amp. This is a powerful amplifier and if you don't have at least 15 inch speakers you MUST really hold down the volume lest you blow the speakers.

Above all read the manual... yes, it is a bit hard to understand...

If you have a problem you can contact me by email for a bit of help. I have wo of these I have been using at venues now.

Posted on Apr 24, 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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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.

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AC POWER PACK BLOWN


David,   I dont like to be the bearer of bad news, but Behringer dissolved its service/repair center years ago.  In my opinion, this indicates little faith in the profitability of servicing Behringer products.  If the manufacturer wont even repair their own products, I wouldn't buy or use that brand if I had a choice.  Their products are good, WHEN THEY WORK.  They keep their prices low by using inexpensive, disposable quality components.  Most of their products aren't worth repairing.      Here are a few options to find your power supply.  Try Rogue music in New York, NY.  Here is the web address.
www.roguemusic.com

Here is another resource.  DBM pro Audio is an authorized Behringer Repair Center.  They are also in New York.  They will be able to tell you if your part is available from Behringer.  I'm very sorry to inform you of the inferiority of Behringer products.  I think the truth, though it hurts sometimes, is the best teacher.  P.S. if you ever visit DBM... next to the elevator, outside DBM's office is a one yard dumpster, it is always brimming with the carcasses of unrepairable Behringer mixing consoles.      Remember, when buying electronics, you get what you pay for...cheap price = cheap components (and usually headaches down the line) Good luck!  I wish you success on finding your power supply.  Michael Mittelsdorf
www.dbmproaudio.com

See my profile for my qualifications. DBM does all my electronics repair.

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