Initially I popped off the back and gave it quick blast from an air compressor at work, but today I finally had some spare time to fully dismantle the chassis in order to remove the decades of dust with some brushes and a can of compressed air. Unfortunately, on the underside of the board many of the solder joints around the flyback and other components adjacent to it are heavily corroded. Some of it almost seems burnt.
Looking at the top of the board in the same area, the PCB itself seems to be saturated with a brownish liquid (bottom left of photo below - you can see where the stain begins). At first I thought may have been soda, but the affected area is located underneath the tube when the chassis is slid into place where no liquids could reach it from outside the case. This is about as clean as I could get it without using isopropyl or anything of the sort.
Like I said, the set seems to function just fine as is and I'm sure I'm being needlessly anal-retentive about it. Seeing that it won't be stored in any adverse environmental conditions from now on, I'm wondering if this is one of those "if it ain't broke" situations. Could this corrosion cause problems in the future if not addressed?
