Living la vida loca!
AO Silver Member
Join Date: Jul 2005
I've never opened up a modern ECU but the older ECU's will open up easily and they are made up of very basic components. Heat from basic use can destroy electronics by drying out the capacitors but they can be replaced for a few quid and a soldering iron. I've never repaired a car ECU but I have repaired other electronics such as video recorders, cassete decks and an old SEGA Gamegear by simply replacing the caps. Spikes in tension are highly unlikely and you would need your battery to go in a big way to cause a spike big enough to blow a circuit on an ECU in a 12v system. It would probably have to reverse polarity on itself or something like that. Current drain form a starter motor pulling from a duff battery would do nothing more than drain power, not spike it and burn your ECU.
164 V6 24v "Zender Alfa Sport"
Past glories: Sud 1.5ti, Alfetta GTV, GTV6, 33 1.5ti, 33 1.7ie, 164 3.0 V6, 164 3.0 V6, GTV 1.8TS, 156 1.6 TS, 159 2.4 JTDm QTronic.