I thought about adding to my other thread, but this is a separate problem in itself (at least I think it is).
Sure most of you know that Travel Time doesn't have # of balls but works on a clock/pulse unit that counts down in 5 second intervals until there is no time and your game is over. Had a problem with a switch that was causing the clock not to start, that's solved.
What it does (and has done but the other problem masked it), is it doesn't count down when the flippers OR the pop bumpers are working (which is most of the time). When they are not working it resumes counting down, works perfect. The clock is on the DC side of the machine and the pop bumpers also, flippers are AC. Thought the DC capacitor was bad, but that wasn't it.
Stumped...
What I've done...
1. Fixed clock with a new transistor, capacitor and resistor. (see schematic)
2. Checked capacitor just after the rectifier, old one worked but charged up slow so I changed it, same results.
3. Checked DC voltage out of rectifier, about 30+ volts (not sure what it's supposed to be)