MH871 motherboard

[cordless89 0]

Hello,

 

I recently was given a MH871, which has issues.  Carriage growls/vibrates as does the feed rollers when you try to advance one way or another.  I assume the motherboard is out.  Voltages checked via power supply, all good.  Motherboard has the markings "JK Goldcut 0905".  Any idea as to the replacement via US Cutter as they have the JGQ motherboard for the MH series. 

 

I have changed the TIP122 and TIP127 transisters but still same problem.  

 

I know its old but its something to get me started playing.

 

Thanks.

[MZ SKEETER 4,709]

I would make sure that is the problem,  contact tech support tomorrow when they open.  They can verify which motherboard you will need.  They are on Pacific time.