Has anyone on this forum ever opened a PCM? I was thinking of attempting a repair but I don't know if they're filled with resin or other material that would prevent repair of the circuits.

Thanks,
'
Jeff

 

All of the PCMs in the vans I've owned over the years were indeed filled with a sort of amber colored silicone covering the components.

I guess if you had a bad solder joint on the underside you could fix that, but replacing a bad component entirely would seem to be downright impossible. Not how I would choose to spend my time anyway.