Looking for schematics for a Behringer PMP 1000, 3000 and 5000 models. I have one of each to be fixed. seems to be power supply issues.
Those all have SMPS, and the power suppy will shut off in a heratbeat if the load is at all screwy. Make sure the power amps are not at fault first. They are more likely to fail than the power supply. When SMPS does fail, well, all we can do is try to help.
andymac62 said:
Thanks. But that is just the schematics for the mixer section. the power amp is not show unfortunalty. I have one of these too fix as well....
and that model does not have the switching power supply or amp. But thank you anyway!
Enzo said:
YUP! and that's where the problem is. blown IGBT's, couple of blown small transistors and a big blown resistor. repaired all that. looked over the whole board and everything seemed to be ok. powered it up and wouldn't power on. try this try that inspect inspect and try again, nothing...then CLICK the relay kicks on and some power supply noise and then lots of current draw and i shut it down. check the psu, blown IGBT's again!
I have repaired a few switching power supplies with pretty good success. but admittedly I am no expert.
Hi, Zero Cool,
i have today the same problem like you do. There so any power or voltage on my SPS.
The important issue is the SPS1000 have also the PMP1280 (its really the same) so you can easly find a schematic for your mixer.
Can you tell me how did you solve your problem with smps? Did you fixed it?
Zeki
i have today the same problem like you do. There so any power or voltage on my SPS.
The important issue is the SPS1000 have also the PMP1280 (its really the same) so you can easly find a schematic for your mixer.
Can you tell me how did you solve your problem with smps? Did you fixed it?
Zeki
after carefully checking and rechecking everything. I powered it up. and nothing. dead. then i checked everything again, powered it up again and nothing...still dead. double triple checked, powered it up and POOF blown IGBT's again so i gave up....
Can someone help me repair my PMP1000. Sounds great through the headphones/phones output, but as soon as I connect the speakers at the speakon connectors, the sound is initially loud, then frizzles away to almost zero volume after making a high pitched screechy rising noise for about 6 seconds, speakers are OK, as I run them on my PMP5000, and they sound great.
Is this power amp the output amp, because the way I see it, as the board with all of the inputs, faders etc, also has an op amp before the headphone output.
I have checked T1,2,3,4 and D1,2 and all have no short or open circuits.
I have a diagram, so any help would be appreciated.
Is this power amp the output amp, because the way I see it, as the board with all of the inputs, faders etc, also has an op amp before the headphone output.
I have checked T1,2,3,4 and D1,2 and all have no short or open circuits.
I have a diagram, so any help would be appreciated.
Check the overcurrent detectors T8 and T9 than charge the 1 Mfd cap and latch the transistor pair T11 and T12. If you overdrive the amp this can cause the symptoms you are seeing. Using too low impedance speakers will also do it.
Behringer PMP powered mixers polarity warning
One needs to realize that if you use Speakon to 1/4 inch plug cables that the "A" channel 1/4 inch sleeve is the HOT speaker signal to system ground.
DO NOT allow this to be shorted to ground. If one tries to use a DI from speaker output without ground lift you will blow the A side amp.
The A channel is inverted in the mixer and the A output is again inverted at the output resulting in the sleeve being the HOT speaker lead.
They do this to implement the bridged mode easily.
One needs to realize that if you use Speakon to 1/4 inch plug cables that the "A" channel 1/4 inch sleeve is the HOT speaker signal to system ground.
DO NOT allow this to be shorted to ground. If one tries to use a DI from speaker output without ground lift you will blow the A side amp.
The A channel is inverted in the mixer and the A output is again inverted at the output resulting in the sleeve being the HOT speaker lead.
They do this to implement the bridged mode easily.
DPA300-2 Behringer PMP1000 power amp
Thanks Fredy2.
The power amp stopped working completely. T4 was shorted, so I replaced all 4 IRF9460 and 640's fets,
R1, R8 were open, and D9 15v Zener smt was also open along with R50 smt.
On initial test, I was getting 51v at the speaker out on left output, but the fault was a cracked trace at D5.
With all those in, it fired up lovely.
The speakers are 8ohm 150w cabs
Thank you for your reply..
Regards. Saranden
Thanks Fredy2.
The power amp stopped working completely. T4 was shorted, so I replaced all 4 IRF9460 and 640's fets,
R1, R8 were open, and D9 15v Zener smt was also open along with R50 smt.
On initial test, I was getting 51v at the speaker out on left output, but the fault was a cracked trace at D5.
With all those in, it fired up lovely.
The speakers are 8ohm 150w cabs
Thank you for your reply..
Regards. Saranden
Hi there I have a pmp2000 and the l7815 doesnt power up every time.
It's getting power and ground. But is not consistently putting out 15v. I've changed it twice still the same. Any ideas. Thx
It's getting power and ground. But is not consistently putting out 15v. I've changed it twice still the same. Any ideas. Thx
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