Question about Behringer XENYX 2442FX Mixer

2 Answers

I have a Behringer zenyx 2442fx mixer. I was using it one day and all the LEDs started glowing brighter and brighter until the whole desk went dead. It has not worked since. I'm guessing the power supply unit is at fault. Any advice, anyone?

Posted by on

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Behringer Master
  • 5,603 Answers

That sounds bad! I haven't heard of a runaway supply for these... Testing of the power supply is in order. The LED's are all driven from the +15 volt supply which is secondary regulated by a three terminal regulator... probably a 7815. I have seen failures of this chip in another Behringer product so it may be a bad batch. The question now is if this has fried the main switching power supply.

Posted on Nov 02, 2011

  • 4 more comments 
  • Alan Sharples Nov 08, 2011

    Thanks for pointer. I got my meter on the psu and found no DC readings on outputs or any on the ICs or transistors. There are only AC readings of around 2 to 4 volts. I could not find a 7815, but there are a 7885 (a 8.5v regulator) as well as a complementary pair of TIP31/32C's. I also found a BD239C on other side of pcb. All the readings at the terminals were around 2 to 4 volts AC. The same readings were found at the rectifiying diodes by the transformer. Also I found a 4N35 (optocoupler IC) which is a 6-pin thing. The readings on this were (approx) Pin 1; 4v - P2; <4v - P4; 0.3v - P5; 35v and P6; 0.3v all on the AC setting on meter....no DC readings at all.
    All in all I assume this has indeed fried the main power supply. I have not as yet got the soldering iron on the job. Any further clues?

  • Fred Yearian Nov 08, 2011

    Yep! The 4n35 is the feedback for voltage regulation of the switching power supply. The TIP transistors are post regulators and unlikely to have failed... one regulates the Phantom 48 volts... Likely failure is the TOP245Y switching regulator chip. The schematic will be just an expansion of the Xenyx 1222 which you can download from here: http://elektrotanya.com/behringer_xenyx-... Scroll down to "get manual" and click to download. Ignore other links. Open the last file of the compressed... SPUS2 which is the power supply schematic.

  • Alan Sharples Nov 17, 2011

    Thanks. I ordered a new TOP245Y and it came yesterday. I had a go at fitting it, but the same readings appear.....still no DC. Well it serves me right if I wasted my money. Question is did I fry the new one myself while soldering it in place?....
    I guess I'll have a good look at the rest of the circuit first before trying to fit another chip.
    Do you have any pointers as to what sort of readings I should be getting in the early part of the circuit....maybe the capacitors or bridge rectifier or the transformer gone??
    If it all looks normal then I'll get another new TOP245Y. I think a good place to start might be to get myself a magnifying glass and check my soldering!!
    Or maybe one of the components around the TOP245Y could be at fault? I do realise that the TOP245 has a static sensitive cmos type of thing in it, so maybe I wasn't careful enough........anyway back to the drawing board!!

  • Fred Yearian Nov 17, 2011

    You are att the point of requiring moore test equipmment... To work on this supply for personal safety you should be using an isolation transformer since this supply runs off the line. If you were careful the TOP you installed should be OK. With power applied, check voltage across C7. It should be around 160 volts or so. Check voltage from pin 2 of the TOP to pin 5. This is kind of a startup voltage monitor that is both under aand overvoltage detection. The high value 680K resistors should be checked as if they open up due to mechanical breakage the supply will not start. C13 if shorted would cause a problem. If the supply is dead, you should see aboout 160 volts from pin 7 of the TOP to pin 4. If the top had shorted, possibly the 10 ohm surge limiter before the input rectifier opened up. We are nearing the point of needing an oscilloscope to do much more troubleshooting. Since this supply ties to the utility power, one needs to be super careful if not using an isolation transformer. In regards to static... I haven't lost a chip yet and I do not use wrist straps although I use a grounded soldering iron. Get me some voltage readings or maybe a couple check ones I gave you will show the way.

  • Alan Sharples Nov 25, 2011

    Hi. Thanks for your help, you've been really good.
    I took on board what you said last time and realised that if I was to do any more testing, I'd need a decent work bench set up with isolation transformer and oscilloscope and clamps and more gear than I have got. I was working on the kitchen table. It just would not be safe.
    Bearing this in mind, I ordered a complete replacement psu from the Behringer service centre. It came today and I fitted it no prob and everything works fine now. Job done, though a bit more expensive than I hoped. I just thought I'd say you've been a great help and I appreciate your efforts....thanks. Al

  • Fred Yearian Nov 27, 2011

    Save the old board for spare parts. You are lucky to get quick service of the part as often Behringer is taking months to get the part.

×

Ad
  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

Problem. no voltage output on any rail.
Replaced the TOP245Y, TL431AC and the P6KE200 diode. 15 + and - rails came back, no 5v. replaced the 7805 regulator......all good.
Now all I have to find is the original short which caused this. I am still testing with a 60w bulb in series with the hot line..........with only the main board supplied there is still a small glow in the bulb. With everything connected the bulb ramps up very bright then drops off, this keeps repeating till switch off.

Posted on Jan 04, 2012

Ad

1 Suggested Answer

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I cant find the echo part on the mixer for karaoke


The effects or FX section is on the top right of the mixer. On your vocal channels find the yellow knob marked FX and turn it to 0. Choose the effect you need using the Program knob (top right) for karaoke this will probably be 03 or 06. Start singing and turn up the yellow knob marked 3 - FX under AUX Sends until the LEDs above them hit -0db, no higher.
Now find the button marked FX - Main Mix and make sure it is UP.
Turn up the yellow knob (3 - FX) next to it until you can hear enough echo on your mic.

Dec 09, 2011 | Behringer XENYX 2442FX Mixer

1 Answer

How to connect a Behringer XENYX 2442FX Mixer to a laptop


you need a cable with two A3F  XLR s going to a 1/8" stereo phone plug, male. plug the XLRs into the Main out L&R on the mixer. plug the 1/8" into the LINE Input on the laptop. You should be able to get the cable from any music store,or Radio Shack. below is a link to the manual,in case you don't have one. Good Luck!

http://www.behringer.com/assets/1622FX_P0557_M_EN.pdf 

Aug 30, 2011 | Behringer XENYX 2442FX Mixer

1 Answer

Looking for a manual


Here:
http://www.behringer.com/assets/1622FX_P0557_M_EN.pdf

The 2442 is just an extended version of the 1622FX. The manual covers the whole series.

Aug 07, 2011 | Behringer XENYX 2442FX Mixer

1 Answer

I am new . I don't no where to conect mix to


For the whole mix, there are two XLR (mic cable) sockets on the back panel labeled 'Main Output' Left and Right, if your amp has XLR inputs you should use these. Otherwise there are two jack sockets labeled 'Main Out'.

This is a complex desk with a lot of useful options, you're going to have to spend some time reading the manual. Have fun.

Jun 12, 2011 | Behringer XENYX 2442FX Mixer

1 Answer

Behringer xenyx 2442fx : I need to know the correct voltages out of power-supply. Mixer has been seen by a previous tech and now FX area and mixer level leds are off (I've been a user of this mixer...


You should find pwer supply voltages of +/- 15 volts going to most of the op-amps.
You should find 48 volts for the phantom power source.
You should find 5 volts for the FX DSP or any other logic circuits.
You should find a +12 volt.

Here is a manual close to your unit (yours is an expansion of it):

http://elektrotanya.com/behringer_xenyx-1222fx_v1000_dpm5m_ub-spsu2_sch.zip/download.html

Feb 13, 2011 | Behringer XENYX 2442FX Mixer

1 Answer

How do i hook up a powered moniter to the behringer xenyx 2442fx mixer?


hook it up to one of the aux output sends (1 or 2), and use the corresponding aux send knob per channel to put each channel necesarry into the monitor signal.

Nov 20, 2010 | Behringer XENYX 2442FX Mixer

1 Answer

I have a Tascam US1641 USB interface and wanted to know if you can connect a Behringer 2442fx to it to use it as a mixdown control for my music in Cubase studio5.


The 2442FX has a built in usb interface so there is really no need to use the Tascam. Here is a link for you:http://www.behringer.nl/EN/Products/2442FX.aspx

Oct 19, 2010 | Behringer XENYX 2442FX Mixer

Not finding what you are looking for?
Behringer XENYX 2442FX Mixer Logo

Related Topics:

594 people viewed this question

Ask a Question

Usually answered in minutes!

Top Behringer Music Experts

Michial Gueffroy

Level 3 Expert

1140 Answers

Chickenwatt

Level 1 Expert

18 Answers

Ric Weide
Ric Weide

Level 1 Expert

10 Answers

Are you a Behringer Music Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...