Went by to work on the arcade machine some more yesterday, a couple things:
1.  Picked up a spraycan of silicone-based lubricant to fix a squeak and resistance on the P1 joystick, and did P2 while I was at it.  Is the spraycan the way to go, or is there a "tube" of silicon lube I need to get?
2.  Noticing problems with the television I installed in my cab.  It's a 27" TV, quite old, and after playing for a while, the picture will start to darken, then go completely black over the course of roughly 2 seconds or so.  Sometimes it will stay like that for 7-10 seconds, then come back on with the picture from the tower and the words "S-VIDEO" in the top right, as if it was just turned on.  Last night, it got even worse however; the picture faded out, and then all the television would do is click on for 2 seconds, click off for 1, ad infinitum, until I switch it off with the television controls and wait for a while with the television plugged into an "always-on" port on the smart switch.  Is this one of those scenarios where a cap kit would fix this, or is it further gone than is worth putting time and effort in on?