Question about Musical Instruments
I had connected my Behringer v-ampire lx 112 amp to a behringer effects pedal board a month ago. It worked great until yesterday when amp began making a loud humming noise and the master effects volume light stop functioning. This happens even when nothing is connected to amp. Nothing can be played through the amp even with pedal board disconnected.
You have a bad ground probably inside the amp , you need a on hands Tec for this one. I bet its not to serious , about $65.00, is it worth it to ya all tho I don't know your area , but its been my exp.this would be a fair price most any where. good luck DFD
Posted on Apr 13, 2009
SOURCE: faulty effects behringer djx700
The effects on the PMP powered mixers flash UNTIL you push in on the selector knob. This way you can dial in the next effect number and then push in later to activate when you want it... Could yours possibly be the same technique?
Posted on Aug 29, 2009
It appears that both these use a 50K pot in the identical circuit and it is UNLIKELY they re-engineered very much so it is likely they use the same pot.
Behringer parts service should be able to tell you.
Posted on Apr 28, 2010
Go to the Behringer website and then the product page for the mixer. On that page are links to the manual, spec sheet and something called view sheet. The "view sheet" has a wiring diagram and a list of the effects.
Posted on Aug 21, 2011
SOURCE: I have a Behringer PMP
There are NO "yellow" overload LED's period. The clip or overload RED LED's are just above the PFL buttons for selecting a solo channel. There are "yellow" signal received lights (level set) up near the trim controls. In normal operation these will light when signal is received. Here is schematic for the PMP5000 which is really identical for the 6000.
http://elektrotanya.com/behringer_europower-p0569_hca2400_sps1000_dpx_pmp-1280s_5000_sch.pdf/download.html This has part of the DSP and PS and the PA circuits.
Scroll down to "get manual" and click on it to download. Ignore other download links on the page.
Try turning off the Phantom power if it might be on... If that stops the hum, something is the matter with the bypasses feeding Phantom power to those channels... Possible problem might be shorting of one of the coupling caps at the preamp input. The PMH5000 drawings are more accurate at the input circuits. You will note that the level set LED's are the yellows, and the clip/PFL LED's are the red ones. I suspect that RF bypass caps such as C110 or C121 (example typical for channel one) might be shorted. This makes noise on the Phantom power line unbalanced and will get into the channel where one of these caps is shorted. Do a test: Plug a shorting jack that shorts the tip to the sleeve intot he inssert for the channel. With the LOW CUT button up, observe is the level set LED for that channel dims or goes out. If it does, then I supect you have a shorted RF bypass cap at the input..The next test involves driving a KNOWN balanced signal into the XLR jack and using a TRS in tthe inout 1/4 inch, test the levels with an oscilloscope to verify the hot and the return have equal amplitudes. I they don't, congratualtions you have to tear the main board out... lots of knobs and screws to access the inout circuits and verifuy the cause... it could ALSO be a bad transistor in the inout pair, etc...
Posted on Sep 25, 2011
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