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#1 2014-06-10 09:10:38

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 954
Website

Macintosh LC III, Silk Screen Polarity error

The Macintosh LC-III Has an ERROR on the silkscreen.
What is labeled for C22 is wrong, It's backwards.

So especially with tantalums, because they can catch fire.
Install your cap the opposite polarity of what is listed on the silkscreen for C22 (only).

or just use SMT Ceramics or BP elercrolytics for the whole thing, that way polarity is not a concern any more.


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#2 2014-06-10 11:50:55

Nick ThaPizzaBox
Member
Registered: 2014-05-28
Posts: 8

Re: Macintosh LC III, Silk Screen Polarity error

Wow good observation. How did you figure this out?

Is this on all LC iii's by chance?

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#3 2014-06-10 13:09:22

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,376

Re: Macintosh LC III, Silk Screen Polarity error

I'm guessing he did a magic smoke emission test involving real flames  .  .  .  maybe even twice!  wink

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#4 2014-06-10 20:42:05

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 954
Website

Re: Macintosh LC III, Silk Screen Polarity error


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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