Buzzing sound in dash and clock reset

[MyWife]

I have a '97 Passat Wagon V6 that no dealer can find a problem with, but perhaps you can help. When I turn the car on there is a buzzing sound in the dashboard (behind the speedometer) and the odometer and clock reset themselves. This does not happen every time I start the car, but frequently. I have seen similar posts on the web describing the exact same thing, but no answers. Anyone know what’s causing this?

Thanks!

[veedubmechanic]

sounds like the instrument cluster is faulty. pretty common problem

[MyWife]

Thank you! Would a faulty instrument cluster be consistent with the oil & water temp. gauges and tach dropping to zero during start up (which is when the clock and trip odometer reset)?

[veedubmechanic]

check the 20a fuse in the engine compartment next to the battery.
also check the fuse next to the coolant resivour

[MyWife]

I've checked those fuses and both are OK. Still think it's the instrument cluster?

Thanks!