The digging continues: IIsi's found, borked.

[Anonymous Freak]

The "digging out" of my basement closet (under the stairs) continues.  After pulling out all the compact Macs, I found my two IIsi systems within easy(ish) reach.

First one, opened it up, looked fine inside.  Tried to power it on, the power supply went *SPARK* *BANG* *fizzle* *smoke*.

Alrighty then.  Dead PSU it is!  Hopefully it didn't fry the logic board.

Opened up the second one - aw, crap.  Caps and battery had blown up and leaked everywhere.  Definitely beyond saving.

Avert your eyes if you have a sensitive stomach. Warning: gore.



But, with luck, the power supply in that one would be good, right?  Oh, and that one has the SuperMac Video Spigot IIsi installed!

Swap the power supply over to the one with the good-looking logic board.  It started to power on!  Chime, display turned on.  Then nothing.  No Happy mac, no Sad Mac, no chimes of death, no nothing.  Restart, and it just starts "ticking", then powers down.  Can't get it to power on even as far as it had the first time.

Probably due for a recap.

 

[jsarchibald]

Maxell strikes again hey?  Should have stuck with the Varta, they never seem to leak.

I've had two of these, one didn't work due to caps, the other worked.  Tried to turn that one on last year, no good.  Caps are the bane of these machines.

 

[Unknown_K]

Sucks. Not sure what's worse buying an old 68k and finding the battery has exploded or rescuing one and pulling it out of storage years later to see its dead like that.

 

[Anonymous Freak]

Well, I left it plugged in but off, then came back to it half an hour later.

IT'S ALIVE! :lc:

Took some selective parts from the two machines (the 80 MB drive from the "looked good" machine was toast, but the 230 MB drive from the cap-burst machine works.)  But now I have it up and running again.  Time to load up the VideoSpigot software and Adobe Premiere!

 

[Anonymous Freak]

I now have the VideoSpigot up and running!  Unfortunately, the OS that was on the hard drive was 7.5.5, and it appears that the software doesn't work properly in anything higher than 7.1.  It shows the live feed just fine; it says it is capturing when I hit the "Record" button, but the 'saved' footage is blank.  I'll have to load up the officially-recommended 7.1 and try again.  (Plus it will make the IIsi a little snappier.)

 

[bibilit]

Too bad, the IIsi is a nice machine.

replacing the capacitors on both the PSU and Logig board will make it work properly again.

 

[techknight]

Yowch mama. 

This is precisely the reason why every machine that I own, the first thing that comes out is the battery! 

Good or not, it goes! the only machine I own with batteries still in them is the IIx because its a requirement. 

Also dont forget your lowely little powerbooks! I remove them all as well. 1XX has them just under the top bezel near the keyboard, and all the newer models used rechargeable pigtail style batteries. I remove all those as well. 

I even removed them out of my G3s, G4s, and my 3400c. the 3400c still works because of this.

 

[Carboy7]

8-o Say, you know what that looks like? (a Maxell battery that exploded) a orange gummy that got squished at intensive heat. (Don't question my logic, I saw some guy do it.)

 

[Anonymous Freak]

Yup, need to fix the power supply. It booted fine when posted last, but just tried it again, and apparently getting some juice flowing through it last time was all it could take - the PSU has given up the ghost.

 

[MJ313]

Stinky thing about that IIsi PS is that little card with the two 47uf cans on it!  Unfortunately, those are pretty much toast.

 

[bibilit]

IIRC two PSU were supplied Astek and TDK ? only one of them had that card.

 

[MJ313]

OK, it's the Sony one with the little board- that's the one I ran into anyway. If the others don't have them, that's great. Turns out the caps are not the 47uf I stated, so just to clarify things, here's the daughterboard and the caps.

http://maccaps.com/MacCaps/Capacitor_Reference/Entries/1990/10/5_Macintosh_IIsi_Sony_Power_Supply.html

 

[Anonymous Freak]

Yup, both of mine are Sonys.

 

[techknight]

yeap I have a sony IIsi supply laying around in pieces that I need to get redone someday. 

 

[TheWhiteFalcon]

Mine's on a shelf waiting to be recapped too. 

I'm seeing a trend.

 

[olePigeon]

Are you sure The Thing didn't do a failed copy of your IIsi?  Better poke it with a hot wire, just to be sure.

 

[just.in.time]

This is why, good or bad, I'm starting to change my batteries every year. I'd rather toss a still good battery than destroy a still good board. That, and I use my label maker to print out the date the battery was installed and stick it on the bottom of the case, out of sight but there for when I remember to check them. Of course, I only have 8 machines so that keeps it easy. I need to do my 2400c, PowerBook G3, iMac G4, and PowerBook 520c soon. I just hate opening the iMac G4. Every time you do you have to clean out old thermal paste and apply new stuff.