Acid above U44, looks like a little above u45. Some below SRC3, and to the right of SRC5. Maybe its just dirt, But L2, looks a little burnt.
You're currently viewing posts by Pinsider Jr99svt.
Click here to go back to viewing the entire thread.
Acid above U44, looks like a little above u45. Some below SRC3, and to the right of SRC5. Maybe its just dirt, But L2, looks a little burnt.
Once the battery starts leaking, the corrosion starts. It's not necessarily the battery acid that kills the board, it's the corrosion. I'm not 100% on the chemistry, but corrosion spreads on metal when electricity is passed through it. If it's eaten into the traces around any of the chips, it gets hard to repair. You may not know the extent of the damage till you pull parts.
Did you replace the Bridge rectifier? If you haven't, that would be next for me, then IC1, if the transformer on the heat sink you were talking about was Q5, 2n6057.
You're currently viewing posts by Pinsider Jr99svt.
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/system-11-dead-mpu-amp-high-power-supply?tu=Jr99svt 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.