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Behringer DJx700 5-Channel Pro DJ Mixer with Digital Effects & Bpm Counter - Page 8 Questions & Answers
Eurolivee B215D - I press
What your amp is doing is going into protection mode. The Class D amplifier topology uses a Pulse width modulation scheme which allows the audio to be modulated onto a generated square wave or pulse train. This is then sent through the MOSFET Driver and then to the High Power MOSFETs that drive the load. The square wave with modulated audio is then filtered by a low pass filter and you are left with your audio. This is great because of the very high efficiency. The downside is that there are more links in the chain to fail. In your case it sounds like one or both of your power MOSFETs are bad and are causing the watchdog circuit to send a shutdown signal to the switching power supply, this is why it is turning off. It is a safety feature to prevent catastrophic failure of the board. (ie. burning the PCB to a crisp) A technician experienced in PCB level troubleshooting shoot be able to repair this for you. Let me know if you need anything good luck.
How do I open a Behringer KXD15 keyboard amp to replace a broken handle?
Looking at pictures on line, you'll nee to remove the electronics panel - take out the screws around the rear edge at the back & the 3 at the top, behind the handle / in front of the panel. I would expect the panel to come out thru' the rear..... Be aware of the speaker lead - could be a bit short so you may need to disconnect it. Once the electronics panel (mixer & amp etx) is clear you should be able to get your hand inside / under the handle & undo the bolts. There's a possibility the if the handle is held on with bolts then there could be "blind" or "Tee" nuts under, so undoing the handle screws may be all you need to do? Take care though, because if they're normal nuts they could drop off into the gubbins! Good Luck!
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