Diodes across the coils can cause driver transistors to short
You're currently viewing posts by Pinsider pins4u.
Click here to go back to viewing the entire thread.
Quoted from onlydjz:Oouch...I have found this topic. Pic shows that the first pair of TIP caused the burnt surface, the second pair is in the board and locked on coils again.
[quoted image]
You will have to grind or chisel out all of that burnt PCB BEFORE replacing the TIPs as the charcoal will conduct and prevent the transistors from operating correctly. Actually, if you leave it, they are likely to lock on and bad things will continue to happen.
You're currently viewing posts by Pinsider pins4u.
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/lethal-weapon-3-blowing-f6-fuse-tip36c-related?tu=pins4u 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.