Re: P4 on sun3/sun3x (Re: NetBSD/sun3 10.0_RC2 problems on sun 3/60)

[Romain Dolbeau <romain%dolbeau.org@localhost>]

Le ven. 19 janv. 2024 à 00:19, Chris Hanson
<cmhanson%eschatologist.net@localhost> a écrit :
> There's a specific tantalum capacitor in one corner of the logic board that *always* blows on the 3/80, and the suggestion I received from numerous people after mine blew was to just desolder the remnant and remove it, and not to bother replacing. I believe they said it's just a filter cap that only really matters if you have super-noisy power or something like that.

Oh, that's good news. The one that blew is C1719 (closest to the angle
with the PS connector), is that the one you're talking about?

I did some cleanup but I'm not sure if it damaged anything when it
blew / caught fire a bit... but it's now definitely worth looking into
a bit more! thanks!

> I've not removed mine yet, but I plan to whenever I get back to playing with my 3/80. Fortunately I was just powering up the bare board when it blew, so I don't have anything to clean up inside the case. Had to let things air out a bit though...

Yes, that is a smelly event. Mine is also bare-board, I don't have a
case for it - just the mobo (and B&W P4 FB).
It was salvaged about three decades ago when updated to a SPARCstation...

Cordially,

-- 
Romain Dolbeau