If one channel isn't working but the others are, the issue is likely in the preamp section. This often involves a failed Op-Amp (typically a 4580 or similar low-noise chip). The schematics will help you trace the signal with an oscilloscope to find exactly where the audio stops. Effects Processor Glitches
Do you have experience with ? Share public link behringer europower pmp2000 service manual
What is the mixer showing (no power, quiet output, or smoke)? If one channel isn't working but the others
Similarly, on , a user shared a detailed case of sound cutting out at high volumes, linked to a 0.8–1V ripple on the +15V rail of the front panel. Another user on yoreparo.com found that a faulty -15V voltage regulator was the culprit for a non-functioning channel. These real-world accounts are often more instructive than any dry manual. Effects Processor Glitches Do you have experience with