Timo - you are the absolute star with this. I do have a slightly older version - your is 4.0 - mine is 3.2, however, capacitors locations, values and polarity is the same. I just did proper check with what I currently have and unfortunately for me replacing capacitors and two 5V regulators didn't do the trick.
One thing I'm finding a little bit off is when I measure on 2575 regulator voltage between output - which is 2 pin - and the ground doesn't show me 5volts but something like 4.92 ... I know this will be a long shot, but would that be a case?
Timo - once again - thank you. Tell me where to send a case of beer
Cheers