Glad to help. I did not want to be overbearing or seeming to be a smart arse.I've had a year or three experience in the electrics/electronic fields and try to make things simple for folk that don't know their amps from their volts.
Really happy that you found the blown fuse. Replacing that will most likely sort most of your problems.
Mark is correct about brownouts, they can be a bugger, but usually these things on vehicles are inherrently pretty robust. Not always but it would not pay a vehicle manufacturer not to build in safeguards in the electronics area. After all a short either by a mechanic (like yours) or a case of worn insulation due to vibration is a common occurence.
I'll admit I nearly burnt a finger off in my younger days by shorting a 24 volt battery with my wedding ring. Lesson painfully and very quickly learnt.
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Ray at Wigan Pier
2014 A8L D4 4.0TFSI Gold (Sticker says "Beige") Can't leave you in a black smoke cloud anymore..
In progress, Nothing left to do.
Gone 2004 A8 D3 3.0 TDI. Ebony Pearl Black (with little bits of other colours and glitter)