Re: Pioneer DDJ-SZ XLR right is distorting
Hi this is the link to the service manual.
As for your questions, all my levels are at 12pm. When i try the sound on RCA at same levels, sound is good. But when i try the same on XLR, its distorting. I have replaced the 3 OPAMPS and also all the output signal capacitors. Still no luck. If i go to 1PM, it distorts even worse. Only the right channel is distorting while the left channel XLR is fine.
If i lower the fader, the sound is stable, but if i put the fader to maximum, it distorts. The signal LED is below RED so nothing is clipping.
All voltages are accurate -15v and +15. Master L and R signal comes from mainboard to audio out board. On audio out board, the signals are processed and amplified by 3 opamps thats NJM45850. Output to RCA is fine but failing to XLR R. So this problem is not from mainboard as RCA signal are fine. This problem is solely on the audio out board.
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Re: Pioneer DDJ-SZ XLR right is distorting
Good news is that you have an identical channel you can compare the broken one to. Bad news is, you don’t have a oscilloscope, as it would make this problem easy. I think you really need to explain better what’s happening.
Does your problem channel have a unbalance, where one side is louder in volume than the other? Is it distorted all the time? At what level does it distort?
Maybe show in the schematic what you have replaced already. See, the XLR jack is balanced audio. So you have 3 pins. GND, a hot side and a cold side. Maybe one is shorted to ground, or the ground is missing, or something is open in one of the sides. Can you post a link to the full service manual?Leave a comment:
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Pioneer DDJ-SZ XLR right is distorting
Have anyone repaired here a pioneer DDJ-SZ before? I have a unit with the problem of right channel XLR is distorting. But left channel is fine. And best part? The RCA both L and R channels are perfectly fine. I have replaced all possible opamps in that audio out board and all the voltage measures accurately. Sorry i dont have a oscilloscope to measure the input nor the output signal. I have attached the service manual here. Any kind souls can show me a lead? Thank you.
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