Repairing a Neewer 660 Studio light - How Hard Can It Be? -- Episode 594

Since you have the second working unit, you could perhaps look at downloading the code from that working one to reprogram a new replacement microcontroller with. Or at least use it to work out what the microcontroller does and then write new code to duplicate the functionality.

Since you have the second working unit, you could perhaps look at downloading the code from that working one to reprogram a new replacement microcontroller with. Or at least use it to work out what the microcontroller does and then write new code to duplicate the functionality.

beacon_dave   I looked at the MCU datasheet.  It's got Read-Out Protection so there is some risk involved.  I'd go with trying to duplicate functionality - or at least "working".

For some reason I honestly hadn't thought back to the fact I've got an identical unit, by that point it was mounted back above my desk!
But trying to obtain the code off it is an interesting solution, although I suspect it might be read protected (I know all the products I've worked on in the past we have protected the microcontroller code).

As far as I can tell the micro takes the potentiometer inputs and outputs a PWM for each pot, I haven't seem any other fuctionality, so I think it'd be interesting to replace it with a 555 based control circuit to either the original LED drivers, or just redo the drivers as well.