The CRM unit is like 1/2 the NSR unit,only one cylinder!!It didn't have any spark at all, a few resistors and capacitors were blown.That's all.Nothing serious but i had to remove all the compound.Now for the NSR unit, when the power motor driver fails, you have to replace the four transistors and maybe a few resistors and capacitors.Nothing to worry about, all the difficulty is the first time you do something like that!!!!Sorry guys i know that a few pics would be very helpful but i don't have any.Next time i will do something like that i will post pics.That's a promise.