St Charles, MO
Quoted from MrArt2u:You’ll likely have to replace the connectors on the J4 plug before plugging in that new Altek. The corrosion easily climbs up the header pins and on to the crimped on connectors, causing all sorts of reliability issues.
I would suggest repinning all the connectors on the MPU, SBD, and rectifier board. It is inexpensive and eliminates a common failure point on these older Bally games. If you want to repin the lamp board and displays, go right ahead. They don't seem to need replacement nearly as often as the MPU, SDB and rectifier board connectors. Don't forget to address the header pins, too.
