🔴#Microsoldering #soldering #repair#Microsoldering #soldering #repair Book a Repair here: solderbrothers... ECU, I See YOU... Mosfet replacement on a BMW Electronic Control Unit. Low melt solder goodness.
You should really mention the fault and show the faulty part being tested, because this just looked like an exercise in soldering, ie, I thought this was just an upgrade, but now I see this comment and see it was a fault.
Mind you if I am just replacing the mosfets wholesale, I usually just cut off the legs and not bother with too much low melt solder. It's kinda expensive and hard to get (the good stuff anyway) over here. There is a nasty gel you can get for removing conformal coating (this one looked doable but I have seen some heavy duty stuff that will not go easy). I hate conformal coatings with a passion but for a car our outside environment it makes sense.
Hi, just a hint: I'm desoldering such devices by simultaneously using two solder irons. One for source and gate and one for the drain. Much faster and more gentle to the board than hot air.
I had the same issue once with my ECU. They mechanic back then explained to me that the issue was caused by the broken ground strap. In fact the stock strap rly was almost in two pieces but there were still about 15-30 braids holding strong. So there was definitely a contact to ground for the ECU I guess. Still I was happy that those ignition drivers are replaceable.
Thank you. Only if you are going to heat the board then you can pre-tin the pads, otherwise the solder will wick under this way. Same way they loosened up taking them off.
That motherboard is maybe even harder for soldering than PC motherboards which are well known as high heat absorption boards. If I doint that , according to what I have seen in video , preheating board would help alot at start, as after first MOSFET is out other MOSFETS did go out much easier. And yea nice job you have done.
@@SolderBrothersIf this is the ECU I think it is, it's a known issue with them and the others are bound to fail eventually. Better to just do them all at once.
@@SolderBrothers all good there, I didn’t mean for my comment to come over too harsh it was meant to be a bit of constructive criticism but good on you for showing us what you can do.
