If you are familliar with electronics, you might do an exploratory surgery to pull the cluster out yourself, and see if you see anything obvious. For the record (Start the record) European electronics manufacturers (eg. Bosch) tend to make solder joints that fatigue from thermal expansion effects. VDO may or may not be any better, so you might just wanna warm up your soldering iron and go over the larger joints on the computer, or power.

The gague cluster is removed by removing the top of the dash, and pulling the cluster up. The first part is harder than the second part. Installation is the reverse of removal... or something.

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