Yuck. I really don't like hybrid modules. Same problem with Tek 400/7000 series. The attenuators have thick film hybrid modules in them that like to go pop when someone abuses the front end. These are pretty extortionate to get hold of individually. Cheaper to buy a parts mule and steal the bits than buy spares.
Also don't like fans which makes me like this oscilloscope.
May take you up on that offer - fingers crossed it will remain working nicely. Many thanks!