On 15/03/16 10:39, Cursitor Doom wrote:
On Tue, 15 Mar 2016 00:24:02 +0100, Sjouke Burry wrote:

A:try to get a replacement from a car wreckers shop.
B:Or get a magnifier glass and start searching for damage/discoloration.
And check big caps and big transistors.
If no success, try solution A.
Or let repair shop handle it.

It's up and running again with an exchange unit, but it ran smoother,
quieter and started up quicker with the old unit that failed, so I'd like
to get the old one working again if at all possible.

It can take some time for an ECU to "learn" your engine.
You'll probably find it runs just as well as the old one after
a tank or two of gas.