Since the phantom power is working, it's unlikely to be hte problem at the transformer. You have to locate the ground wire of the mixer (ususally the lower end of the faders, or the ground from one of the audio connectors). Using your voltmeter you must find one point providing +15Volts and another one providing -15Volts at each of the input stages. I think that the problem is that one (or both) of these voltages are absent. Mention that the +15 and the -15 volts are between the ground and the apropriate pin at the input stages. In case you will not locate the +/-15Volts, or they are 0Volts, post me back for further directions.
In case of a problem or clarification, don't hesitate to post me a reply. If you are satisfied, accept my solution.
Thanks and regards Stelios direct FixYa link: http://www.fixya.com/users/technical114
You will need an oscilloscope and a good grounding in electronic servicing to attempt a repair.
But, check the signal routing. Refer to the user manual.
Toroid Transformer is used in power supply not with headphones out. Headphones out are directly connected with headphone amplifier IC. (Note that the difference in 4700 and 8000 is number of channels. Rest of the circuit diagram is same).
Behringer HA 4700 PowerPlay Pro-XL ' SynthXL - FREE Service Manual
The B207 MP3 player sucks
I keep getting ERROR messages
I ran a MP3 cleanup program
MP3VAL and it helped but
I am still getting 'Reading'
and then ERROR and I also
tried another completely new B207
with the same results.
ANY other mp3 device works!!
When a heavy item is dropped onto the top of a control, it can break internally.
I would check the encoder switch is working correctly, if not, replace if needed.
Assuming that you've checked the fuse, and the lights come on...1) Can you hear any "hiss" from the speakers at all? 2) What have you tried to input into the device? (guitars, keyboards, mics, etc.)3) Have you reset all buttons to "basic" mode? Let me know, and we'll go from there...
This is NOT convenient with the 2000 unit...ASSUMING you subwoofer has mid and high frequency cutoff built in, what you should do is to mix the two preamp signals in a small mixer and send those to a POWERED subwoofer OR to an amplifier that is driving the subwoofer.
Im having the same problem too. when i'm turning on the speaker, without having plugged some cable or jack on it, it sounds like blowing air (or like a storm).
Often teh power supply fails because of other problems. Unless the board has flame damage the parts that are defective can be replaced... Getting some of the parts that are special can take time. Most of the components are available at many sources however. The SPS400 power supply can be repaired.
Here is link to schematic that should have the SPS400 as well as the rest of the PMH1000 on it.
It sounds like you're experiencing a couple of issues with your Behringer Xenyx 1204FX mixer. Let's address each of these problems separately:
DSP Display Not Illuminating: The fact that the DSP display works when you press down and turn the knob suggests that the issue might be related to the display itself or its connection. Here are a few steps you can take to troubleshoot the problem:
Check Power Source: Ensure that the mixer is receiving proper power and is turned on. Sometimes display issues can be caused by power-related problems.
Connection: Make sure the ribbon cable or connector that connects the display to the circuit board is properly seated. A loose connection could be causing the display to not illuminate.
Faulty Display: If none of the above steps work, there might be a problem with the display itself. You may need to contact Behringer support or a professional technician to get the display repaired or replaced.
AUX 1 Send Not Working: If the AUX 1 send is not working as expected, there could be several reasons for this:
Routing Settings: Make sure that the AUX 1 send is properly routed to the desired destination. Check the routing options on the mixer to ensure that the signal is being sent to the correct output or destination.
Level Controls: Verify that the level controls for AUX 1 are set correctly. Make sure that the AUX 1 knob for the specific channel you're working with is turned up.
Effects/Processing: If you're trying to send a signal with effects applied, check if the effects are set up correctly. Sometimes, an incorrect effect or routing setting can affect the AUX send.
Cable and Connections: Ensure that the cables connecting the AUX 1 send to external devices (such as monitors or effects units) are functioning properly and securely connected.
AUX Master Level: Confirm that the AUX 1 master level (usually located on the main output section of the mixer) is turned up to an appropriate level.
If you've gone through these troubleshooting steps and the issues still persist, it might be a good idea to consult the user manual for your Behringer Xenyx 1204FX mixer for further guidance. If the problems continue, you may need to reach out to Behringer support or consider seeking assistance from a professional audio technician or repair service.
Hello Geoff, try using an external processor and check that it works well, if so, the problem is that you have the Jack connectors of Effect sending and those of Return of Effects, dirty
Apply a couple of drops of oil, type WD40, to a Plug connector and insert and remove them repeatedly in each connector Jack for sending and returning effects
I hope you can solve the problem, comment the results
Greetings Franco Dosil
Hola Geoff, prueba usando un procesador externo y comprueba que funcione bien, si es asi, el problema es que tienes los conectores Jack de envio de Efecto y los de Retorno de Efectos, sucios
Aplicale en un conector Plug un par de gotas de aceite, tipo WD40 y entralos y sacalos repetidamente en cada conector Jack de envio y retorno de efectos
Espero puedas solucionar el problema, comenta los resultados
Saludos Franco Dosil
https://media.music-group.com/media/PLM/data/docs/P0A8M/PMP1680S_PMP980S_PMP960M_M_EN.pdfhttps://c3.zzounds.com/media/PMP1680S_P0A8M_OI_EN_ES_FR-df44b2314272dfc61a7cabe5bb88ecce.pdf
Likely needs the DSP board replaced. It is the small board held on by 2 screws(if I remember correctly) and is easily replaced. I think retail cost is about $30 and can be ordered directly from Behringer.
