My gut feeling is get it up off the board.

I think I'd be more worried about the bridge rectifier cooking the board than the bridge rectifier itself.

LTG : )

I would lift it up real quick fo sho

Solder sucker and soldering iron.

LTG : )

https://www.marcospecialties.com/pinball-parts/77-DP

LTG : )

I would have left it well enough alone - that's just me though.

"If it a'int broke - don't fix it!"

"What me worry?"

Alfred (resized).png

Yes ^^ -- the solder looks to be original (there is no flaking of the solder mask near terminals). Is it causing problems? If not, why replace it? If worried about the heat, you can add a heat sink to the bridge rectifier without pulling him off the board.

I'd be more worried about those radial caps getting old and leaking corrosive guts on the board than that bridge.

I’d be more worried about the other two bridges that weren’t fused at the factory. The ones that mount off board.

OK -- do you have +12V and -12V coming out of the bridge?
You didn't state which game so I am assuming a System 7. +12V can be found at test point 3 and -12V can be found at test point 4 (meter ground at test point 2).
If original caps, I would examine caps at C7 and C8 for leakage. Either of those two going bad can kill power the the 5V regulator circuit. See if you can measure a doubled voltage at the cathode (banded end) of diode D1. D1 is above the relay. If not doubled, replace C7 and C8.

While you're there, take a look at C12 and make sure he isn't leaking.

Umm. Don’t Timmy up your board. Bridges are hard. Don’t ask me how I know.

No, it’ll void your warranty. It says so right there.

That is a 35 amp rectifier handling only 7 amps. I doubt it even gets warm.

Don't be sorry for not knowing, that is was why you were asking if you should move it off the board!

I was just offering up some additional information as to why or why not move it off the board.

OK - curiosity got me.

KBPC35 series = 1.1V forward voltage drop per diode.
Two diodes always operating simultaneously.
Power = (2)(1.1V)(7A) = 15.4W
Defined thermal resistance = 1.4C/W
Temperature rise = (15.4W)(1.4C/W) = 21.56C temp rise. (rounded to 21.6)
Ambient = 25C typical so operating temp will be about (25 + 21.6) = 46.6C or 115F. Yeah, it will see a temperature rise but far from being too hot.

Thanks Ed! Know we REALLY know!

I don't have much to add, I just came here to learn some new stuff about rectifiers.

However, I would like to commend you on the photos in the original post. Its always nice to see clear, up-close, well-lit, and focused pics when someone is asking for help/advice, it makes it that much easier to see what is going on. And these photos represent that at the top level.