Pioneer DJM 800 problem
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Category: General
Forum Name: Electro Frying Forum
Forum Description: Talk about drivers, processors and mixers
URL: https://forum.speakerplans.com/forum_posts.asp?TID=94695
Printed Date: 27 March 2026 at 4:05am
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Topic: Pioneer DJM 800 problem
Posted By: GAZ.
Subject: Pioneer DJM 800 problem
Date Posted: 10 February 2016 at 1:09am
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I've been given this DJM to sort out. It has suffered a drink spill, well several in its life it seems from the state of the inside! Anyway so after an extensive strip down and clean it's all working except for the display which isn't working at all. I'm guessing maybe a circuit protector has popped after the liquid got in there. Any pointers as to where I should start fault finding the display issue? Many thanks! ------------- 100% Earth Moving Bass |
Replies:
Posted By: simonp1100
Date Posted: 10 February 2016 at 7:59am
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Hi, On the top board there are three ribbon cables going to the lower main DSP board, the smallest one of the three is the control/power for the display, check the ends of this ribbon are not dirty etc and then check the tracking and connector on the main DSP board where this ribbon plugs in, i assume you have checked all the electronic fuse on the DSP board ?????. Repaired a lot of these with the same fault as you described and most was beer going onto the lower main DSP board and eating / decaying the tracking on the board. Check this area very closely. Just remember PIONEER products ALWAYS attract beer.
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Posted By: GAZ.
Date Posted: 10 February 2016 at 10:54pm
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Thanks for the tips, I'm going to work on it some more tomorrow. ------------- 100% Earth Moving Bass |
Posted By: GAZ.
Date Posted: 14 February 2016 at 5:16pm
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I had another look at this again earlier, no beer seems to have got anywhere near the DSP board, all ribbon cables are clean and seated correctly and I have checked all the littel fuses by the plug from the PSU and all are ok. I am wondering if the problem is on the top board as there was most liquid damage there? ------------- 100% Earth Moving Bass |
Posted By: simonp1100
Date Posted: 14 February 2016 at 7:16pm
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Check that you have the 33 volts for the display (VF- & VF+) this comes from the small ribbon cable from the DSP board and then going up to the top PCB for the display, if this voltage is missing NO DISPLAY. I assume you have the service manual ????? |
Posted By: GAZ.
Date Posted: 14 February 2016 at 9:59pm
Unfortunately I don't have a service manual  the 33 volts is present at the connector on the top board from the DSP but nothing at the connector by the output vu meter next to the display------------- 100% Earth Moving Bass |
Posted By: simonp1100
Date Posted: 15 February 2016 at 7:51am
| It sounds like the top board is the problem, you could try tracing the tracks of the 33 volts and they should end up on two of the pins on the display, a service manual will help. |
Posted By: U.Viktor
Date Posted: 16 February 2016 at 11:50am
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Spilling any liquid into this is a killer |
Posted By: DjLeco
Date Posted: 20 February 2016 at 12:53am
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Service manual, I put it here: http://www.filehost.ro/30902444/Pioneer_DJM800_pdf/" rel="nofollow - Pioneer DJM800 pdf Press on tab wich shows "Apasa aici pentru a porni downloadul" Ignore advertisings...  Or in a forum where I'm in: http://www.forum.poweraudio.ro/viewtopic.php?f=99&t=10025" rel="nofollow - http://www.forum.poweraudio.ro/viewtopic.php?f=99&t=10025 Is possible to ask U to make an account. Good luck and cheers from Romania!
------------- I'm A Stupid SMART Romanian... |
Posted By: DerLean
Date Posted: 21 March 2023 at 7:29pm
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Hello some Years later, I have the same problem with my DJM 800 no display but everything else works just fine. The display went out some weeks ago but first just stoped working occasionally and lit up sometimes when powered again. Now ist dead. Checked all Ribbons and no Beer anywhere to find. All fuses traces seem to be fine. At the display solder on Panel 2 I measure on pin V33 33 Volts but at VF+ and VF- just 0.1 to ground. Is this how it should behave isn’t other idea maby and you know what VF+ and VF- does? Every other LED works fine. Greetings Leander
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Posted By: CyNerd
Date Posted: 01 August 2023 at 12:31am
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Seems you the type of repair person i could use ur help with So my djm 800 When playing music from channel 4 the lights light up but the output sound comes from channel 3 So simple words channel 4 work with channel 3 fader But also when i connect rca to the channel 3 input Channel 3 works normal. Any ideas how i can fix this issue?
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Posted By: CyNerd
Date Posted: 02 August 2023 at 12:00pm
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Hey thanks for the response I already tried the rippons and the faders
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