Working on a Gottlib system 80B Gold Wings: Have been following PinWiki
Things I have done:
Ensure your game is providing a solid 5VDC power source - Done
Replace the orange electrolytic cap in the cabinet bottom if still original - Done
Examine the board for Alkaline damage. If present, clean up - Done used the "Dallas" Transistor method
Not sure how to do these tasks, or waiting to do after step one is completed: Tools I have multimeter and pulse meter
Ensure the reset section of the board is working. Pin 40 of the 6502 should begin "low", then after about 1/2 second, transition to "high"
Check the clock signals at the 6502
Check the IRQ signal at the 6502
Check the R/W (read/write) signal at the 6502
Check the address and data lines to see if they are pulsing
Feel each of the masked ROM chips at U2 and U3 as well as the 6532 RIOT chips at U4, U5, and U6. If the IC is too hot to touch, it has probably failed and should be replaced.
Check each of the 74XX chips using the procedure "here"
If original game ROM(s), replacement with 2716 is advised.
Thanks for any help