I dug out a microscope, and as far as I can tell, the microcontroller says: CY8C24423A
24PVX[black blob][unreadable lettering]
[unreadable lettering]
However, all the units I can find for sale that are model CY8C24423A-PVXI (and slight variations thereof) have 28 pins instead of the 20 on this chip. Am I reading it wrong? (It isn't clear at all, with some sort of gloss over top making it even harder to read.) Or is the obscured part something that will get me the 20-pin one I need?
Hopefully this is what you were looking for, but if so, I think it does not bode well for the old PicMicro. You be the judge. Attaching a picture showing my test results for what I think you were asking for...
Looks OK , 12v supply in and the regulated 5v out.
Normally after power up, there is a 3sec -,5 sec wait, and then red LED should light steady.
And flash when belt motor running.
Max.
So would a lack of voltage being sent to the motor and the LED never lighting at all indicate a likely fried microcontroller chip? Or is there and other likely culprit or easy/straightforward way to test the chip?
I have never seen a reverse-engineered for that version of the board, so it is tricky, other than testing the other prime suspects and taking a few voltage readings, it is hard to track the culprit down.
The processor is a possibility.
One link suggests it is no AC power, but you appear to have eliminated this. http://www.wolfteck.com/2017/11/25/mc2100-motor-controller-troubleshooting/Max.
The solution is to replace the board. I have not been able to budget the money to get a replacement as of yet, unfortunately. They're like 100 bucks and up.
I know this is and old thread, but I have this same board MC2100LT-12. I have 2 fried resistor on it.
Would someone be able to read the color for me? These are R21 and R22 next to the rectifier.
Thanks a lot!
I think the Q4 Mosfet is shorted, I soon as I ask for the belt to move I have full voltage on the output and the unit just goes in slow flashing mode (4 flash, pause, 4 flash,...) as it draws to much amps. If I put a lamp then the lamp goes to max intensity but the board continue to work.
Here are the R21 and R22 with my best guess temporary replacements.