Hi all, I have a bally Kiss, the KISS did not light at all when I first got it. I reflowed the header pins, after doing this most of the lights worked but no flashing. I checked wiring, bulbs, sockets, and even jumped from a working light. I replaced the U2/U3 chips, this time the entire K and I worked and half of the S's, still no flashing. I noticed that the U2 chip was not sitting level so I unsoldered in and seated it correctly, now only 1/3 of all the lights work, are the chips that I just replaced gone bad?
What makes the lights flash U2/U3, U1, or the scr's? The chips I ordered where PN HCF4555BEY alternate to the MC14555B, are these in fact eqivalent? The SCR's are PN mcr106-1, can a MCR106-6 be used, I find this as equivalent on marco pinball website.
I really appreciate the help!