| Electronics > Repair |
| Help repairing a switching power supply out of a Pioneer DJ Disc Player |
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| jmibk:
Okay... I tested the feedback thing with simulated voltages out of a power supply and a waveform generator... ground: secondary ground and primary negative (eg. PC1 / pin 3) to one ground yellow: voltage on RC101 cathode simulating a wavy 12v voltage... blue: voltage on PC1 / pin 2 (shows switching on/off the led of the opto purple: voltage on PC1 / pin 4 (pulled up with a 2k2 resistor to 10V external supply) Everything seems to be working well. |
| PTR215:
Hi, this is a long shot. This thread is more than a few years old.... I have the same PSU , Pioneer P/N (DWR1463) that was pulled from a S9. I had an older DDJ-SZ2 parts unit, that shares the same part (PSU). I swapped the PSU in the S9 with the working one one from the SZ2. Everything has been working great in the S9 no issues and back to normal. I would like to try to repair the PSU that was removed though, so i can get back to restoring the SZ2. The PSU is DWR1463-A (SanKen) I also believe I have a faulty Z2 (SCC6210A). The newer service schematic for the SZ2 does not show the part value or name for Z2. I am having a hard time finding info on it. In addition I have discovered Pioneer labels the same PSU BOTH DWR1463 AND DWR1566 as compatible , which is about a hundred dollar difference between both. I have voltage at C11 & D7 but Z2 is very low on Pin 1 (Vcc) and nothing out Pin 7. Just tested the IC out of circuit on a bench power supply. Any help would be greatly appreciated. Confirm what Z2 is and anyone with a successful repair? |
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