Changes to the problem

ZMX52 : No output

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  • September 14, 2016 19:28
    Roger Cook
    Change in reply by Roger Cook to Hi Stuart. Yes, I got it working! I found a circuit diagram/ service manual. If you dismantle the mixer there is a model number on the pcb that shows a different manufacturers name (can't remember it at the moment) so I googled that. I will have it saved somewhere and can email it to you if you can let me have an email address. The problem was the power supply which although badged as AC was actually putting out DC. I just removed the rectifier and it worked fine but it was a bit under spec current wise so I ended up buying a new 1 amp supply. The PSU came with it but it was not the original as it was second hand..
  • September 13, 2016 23:02
    Roger Cook
    Change in reply by Roger Cook to Hi Stuart. Yes, I got it working! I found a circuit diagram/ service manual. If you dismantle the mixer there is a model number on the pcb that shows a different manufacturers name (can't remember it at the moment) so I googled that. I will have it saved somewhere and can email it to you if you can let me have an email address. The problem was the power supply which although badged as AC was actually putting out DC. I just removed the rectifier and it worked fine but it was a bit under spec current wise so I ended up buying a new 1 amp supply. The original PSU came with it but it was not the original as it was second hand..
  • September 13, 2016 23:01
    Roger Cook
    Change in reply by Roger Cook to Hi Stuart. Yes, I got it working! I found a circuit diagram/ service manual. If you dismantle the mixer there is a model number on the pcb that shows a different manufacturers name (can't remember it at the moment) so I googled that. I will have it saved somewhere and can email it to you if you can let me have an email address. The problem was the power supply which although badged as AC was actually putting out DC. I just removed the rectifier and it worked fine but it was a bit under spec current wise so I ended up buying a new 1 amp supply..
  • December 07, 2015 22:53
    Roger Cook, the poster:
    Removed a reply in this topic
    Reason: User-initiated delete from community
  • December 06, 2015 13:46
    Roger Cook
    Change in reply by Roger Cook to Repair by Alto would work out too expensive and probably more than the cost of a replacement product. However, having stripped the unit down, the pcb is marked AMX80 so is presumably the same as the earlier model with this number. Can you confirm this? I may be able to locate a service manual for the AMX 80..
  • December 06, 2015 13:46
    Roger Cook
    Change in reply by Roger Cook to Repair by Alto would work out too expensive and probably more than the cost of a replacement product. However, having stripped the unit down, the pcb is marked AMX80 so is presumably the same as the earlier model with this number. Can you confirm this? I may be able to locate a service manual for the AMX 80.thanks.
  • December 01, 2015 10:54
    Roger Cook
    Changed description to No output. My ZMX52 is not working. On power up the LEDs flash. The peak LEDs on channels 2/3 and 4/5 stay lit. The power led does not light. All channels have been tested with a 1khz sine wave. There is no output, just a faint click as the level pots pass the centre detent. Does anyone have a service manual or circuit diagram? It would be possible to reverse engineer the circuit but it's a lot of work on a cheap mixer
  • December 01, 2015 10:53
    Roger Cook
    Changed description to No output. My ZMX52 is not working. On power up the LEDs flash. The peak LEDs on channels 2/3 and 4/5 stay out. The power led does not light. All channels have been tested with a 1khz sine wave. There is no output, just a faint click as the level post pass the centre detent. Does anyone have a service manual or circuit diagram? It would be possible to reverse engineer the circuit but it's a lot of work on a cheap mixer

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