Wanted Display driver ICs 7180/6184

[HomerRamone]

Having sorted Gorgars RAM issue.
Also resolved the missing lamp row.
Fixed the drop targets failing to reset (which was a shiny new issue )

All that remains is the segments missing on player 3 and 4 display. Checked and replaced some busted resistors but segments are still missing. (They were flickering when he first arrived.)
So I guess its going to be down to either the 7180 IC (Or maybe the 6184) ?

Can these still be obtained ? cant seem to find any (with the exception of some chinese sellers on fleabay)

 

[Jay Walker]

I can't actually recall just now which is which, but one of those types drives the digits from the +100v, and the other the segments from the -100v. So it will be one type rather than both. The chips remained in use on later Williams games, even alpha-numeric System 11 ones with all-in-one display pcb's. If someone's replaced such a unit with an led unit due to the glass envelopes failing, the driver chips may be alright, though you'd have to risk removing them. It may be better to obtain a good Level 6 Master Display.