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Discussion Starter #1
I have a VNL 770 with a dead instrument cluster. Does any one have any knowledge of the inner workings of the left circuit board? I have done all the checks of the wiring and checked the soldering of the circuit board connectors. I think the problem lies with the +12 Ign. signal on the left board that turns on the microprocessor. Any help would be appreciated.
 

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Those had some dash board issue in them. I did some research and unfortunately I can't help you. Sorry. Maybe someone else can.
 

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Discussion Starter #7
Cluster repair

That is awesome! Post up pics or anything else that might help others in the future.
Sorry.I did not take any pictures as I was not sure of the out come. I had gotten to the point where I was resigned to purchasing a used replacement cluster. So i figured I had nothing to lose by taking a few things apart. The buzzer is not working but it never did since I have had the truck. If I decide to tackle it I will get the camera out and take a few pics. I sure wish someone had schematics for these circuits as it would make troubleshooting a lot easier. You would think that after Volvo was not using a particular circuit they would release it.
 

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Good morning , I had the same problem and i find online this guys , the fix it like new , i am very impressed , it is call Dashboard Instrument Cluster and they have location in Toronto Ontario as well in Florida US
Try them
 
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