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Macintosh LC Cap Question
Posted by: 360alaska on 2016-01-03 18:00:41
Recently, I Purchased a Macintosh LC in pretty good shape and working but of course needing a recap. I'm just curious if anyone knows why my board has a large thru-hole electrolytic instead of a surface mount? Maybe it was some sort of modification to support an accelerator or something?

Capture.JPG
Posted by: unity on 2016-01-03 18:25:52
That looks like it was re-capped before. Probably just that one. Closer inspection of the solder on each side will tell. Could it be factory? Maybe. I seem to recall a case similar to this.
Posted by: Elfen on 2016-01-03 18:28:34
That looks like a repair done a long time ago. It looks good from this end so leave it. Replace those little tin cans "South" of it.

Q: Does it turn on and boot properly?

After the logic board, recap the PSU Next.
Posted by: 360alaska on 2016-01-03 18:46:28
Yeah,

I've had him for 2 weeks, I recapped him and replaced said capacitor with a 3300 16v:

IMG_0342.JPG

It boots up to system 6.0.8 which I was using until I found out that "The Yukon Trail"  will only run on System 7.1 so he's running 7.1:

gfs_46587_2_12.jpg

I also spent 70 dollars on him and replaced the working 40 meg scsi with a scsi2sd 🙂 and I had a spare IIe card and even though I'll likely never use it I put that in there too. It had 10mb of ram and I swapped in a 512k vram stick! Now I just need to find a silent fan replacement and a nice LC topper CRT 🙂

As for the capacitor I'm still pretty curious as to why somebody would replace it with a hug electrolytic but who knows.
Posted by: 360alaska on 2016-01-03 18:48:08
I found another like this online:

mac_lc_mb.jpg

Maybe this was an apple repair after a factory reject?
Posted by: uniserver on 2016-01-03 18:50:14
it was factory... i have seen many many LC's with that big honker on there.  Thinking it was compensation for something that was not quite right in the REV1 production boards.
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