I'm not sure which IC is the SN741N controlled by U4 on the MPU but it can be tested.
There are IC testing instructions on the pinwiki general page. This test is great for finding shorted or open ics.
You're currently viewing posts by Pinsider Cheddar.
Click here to go back to viewing the entire thread.
You're currently viewing posts by Pinsider Cheddar.
Click here to go back to viewing the entire thread.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/sinbad-outhole?tu=Cheddar and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.