(Topic ID: 246421)

Help: Alltek MPU Over Voltage (Memory Lane)

By westofrome

1 year ago

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  • 9 posts
  • 5 Pinsiders participating
  • Latest reply 1 year ago by Quench
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#3 1 year ago

The state of the overvoltage LED is based on the relationship between the 5V and 12V power rails at the MPU board. It can and more than likely in your case is coming on because your 12V is low.

Post the actual voltages you measured.

#7 1 year ago
Quoted from westofrome:

I am only getting ~3VDC on the Altek MPU TP1 and TP4
In any case, I'm going to begin repinning.

Have you first determined if your solenoid driver board is outputting 5 volts DC? Before repinning anything find the source of the voltage loss/drop.

#9 1 year ago

Great to hear you sorted it out!
Is the plan to fix the original boards or leave the Allteks in there? I presume the original MPU board has extensive battery corrosion with those green connector terminals you found?

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