I have been given a peavey pv8 mixer without the power supply, I have used a different power supply with the same voltage, my problem is when it's turned on the clip lights are glowing on all channels and also the master fader section clip light is also glowing. Is it a power supply problem please, regards James

SOURCE: PEAVEY 6 CHANNEL MIXER (PV6) - Right Fader Crackles

its obvious that the fader in question needs replacing ..parts are available from www.peavey.com

SOURCE: No volume control with 2 faders on Mackie CR1604 mixer

If all other functions work for those channels, the most likely problem is the fader itself. These can fail and operate more like switches rather than faders. Without witnessing the behavior, I can not state that for sure. While these mixers are not the hardest to work on, they are time consuming. The faders can be purchased from Mackie directly. If you need to have this repaired, any shop that repairs audio gear should be able to erpair this for you. Where are you located?

Dan

SOURCE: all the channels shows the

It is likely there is a failure of one of the power supply voltages. The solution requires troubleshooting that is NOT DIY unless you are electronically skilled.

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

SOURCE: I have purchased a peavey

You MUST turn off the echo from the computer OR remove the sound card to line in connections. The tape out goes through the sound card and immediately back out to the tape in and around it goes for feedback.