Wadia Display Repair

The display on my Wadia 151 will sometimes work properly, and other times display gibberish or nothing at all. The unit works great. Wadia says the repair will be very expensive, so since it's more of a nuisance and the unit works fine, I will not send it in. When I unplug the unit it will briefly display properly for a few hours or days. Any alternative suggestions? Thanks.
open chassis and sprey some deoxit on circuit board.
examining cold solder joints and resoldering them may also help if you know how.