Question about Pioneer CDJ-850 CD PLAYER

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Pioneer CDJ850 is not powering up after cleaning inside.

Cdj 850 is not powering up.It was in well running condition only opened it for cleaning the jog.After that when plugged in and turned on the Standby light flashed for few seconds then its not turning on. Please Help...

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  • Dom1n1c
    Dom1n1c Apr 16, 2014

    hey, You should check all cables connecting top and base together...also this may be your problem if not you can read through the service manual and try to diagnose the problem.


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Posted on Jan 02, 2017


Hi, if this cdj 800 mk2 is not loading or it keeps ejecting discs i would suggest you contact your local pioneer repair agent as this is a common fault with the players at the moment and there is a fix for it but you need a special jig to set up a laser replacement and only the pioneer agents have this jig or your player needs a software update but the software update is done via a cdr disc in your case your player isnt reading discs at all so its likely you need a laser pick-up replacement. hope this helps you. regards. paul.

Posted on Sep 04, 2007

  • 10 Answers

SOURCE: jog wheel problem with pioneer cdj1000

Sounds to me like your platter on the jog wheel is stuck in the engaged position. You have to open up your unit and take apart the jog wheel. In there you will find some spring things (don't quite remember what they look like at the moment or where exactly in the jog wheel they are) and you have to strech them back out so that when your hand isn't on the wheel it will spring it back up. Either that or the switch is busted and if that is the case you have to replace the switch.

Posted on Jul 22, 2008

  • 71 Answers

SOURCE: pioneer cdj 1000 mk2 not powering up

its the internal power supply its failed these are all like this expensive to do get it fixed and out it

Posted on Dec 17, 2008

  • 1175 Answers

SOURCE: Pioneer CDJ 1000 - Jog Wheel not working.


Beer is meant for human innerds not CD players

Posted on Jan 14, 2009

cdj repairs
  • 68 Answers

SOURCE: Pioneer CDJ-1000 CD Player jog wheel display


Sounds like a fault on your jogwheel pcb.

if you havent had your player repaired then you can contact me @

Hope this helps you.

Thank you.

Posted on Jan 19, 2010

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If the standby light blink then it indicates a fault relevant to the processor.If the set is fully dead then the SMPS power supply can be faulty.

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hi frnd,

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remember to clean too.



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