E34 instrument cluster issues

[SM_M50B20]

All. Need help.

E34 520i M50B20 instrument cluster problem. Fuel gauge, temp gauge, speedo and rev counter not working. Cluster looks great and can't see any signs of scratches etc. Temporary temp gauge visible.

Possible problems?
How do I fix?
Who can I consult?

Cape town area.

 

[Mytfine]

From my E34, check the fuses 1st, then if not disconnect the 2 plugs at the back clean with contact cleaner and then check. Otherwise might be a bad cluster.

 

[SM_M50B20]

From my E34, check the fuses 1st, then if not disconnect the 2 plugs at the back clean with contact cleaner and then check. Otherwise might be a bad cluster.

Found out bad capacitors that was short circuitng the cluster chip. And causing it to reset. Combined Electronics in CT able to reprogrammed the chip with old e34 software profiles. Master at ECUs and clusters. He fixed them in droves over the years. Trouble shooting the issue.