Don't know what area you are in but if you can obtain a �can of cold�, that is a chill
fluid or even the dust blower that office supply stores carry (In the real old days
we used freon). Then spray down the power supply first, then the motherboard. If you
have an intermittent connection the cooling will contract the pc board first and allow
a hairline crack/bad connection to make contact. Be sure that the moisture that forms
has dried before turning anything on. Should take about 10 sec.That usually checks
for intermittent and bad connections. The fact that you heard a �pop� though indicates
that a chip possibly gave up the ghost.
Now it gets dicey. If you got �guts� open the power supply and first look for pregnant
resisters. Resistors are little tubular devices with color bands around it and a wire
at each end (yes, I know about surface mount resistors, but those usually don't go
pop). A resistor that goes �pop� is usually a �higher� current one, � watt and up. All
resistors should have a parallel look to the sides. If one has a bulge, that one is
one of your culprits. If that is the case��well best bet would be replacement of the
PS. I don't think this is the place for board repair 101. Sorry for the length, I get
carried away, been there, done that.
the guy up north with too many computers.
J.Oak
Tom P wrote:
> >Hi there, folks!
> >
> >Here I am with a dead WGS 8550/200 AND a dead 2400.
> >
> >Well, the 2400 probably has a dead logic board. (that's what the original
> >owner said in the Ebay listing, anyway) However, I want to eliminate the
> >I/O board and the 603e processor board, too. So if anyone wants to ship me
> >their 2400 so i can dismantle it and swap parts with mine until I figure
> >out what is broken, please e-mail me and I will send my address!
> >
> >Just kidding. However, I have dismantled this machine repeatedly, and am
> >getting quite good at it. Anyway, I have gotten it to start up to a
> >flashing question mark twice. One of those time I connected the floppy and
> >inserted the 8.1 PPC Disk Tools disk. It booted to an error (it was just
> >the outline of the error box flickering at high speed. It did show the
> >MacOS splash screen on that occasion (Blac and White b/c it was the disk
> >tools disk.)
> >
> >Both of these startup moments were immediately after disassembly. I have
> >tried leaving the machine unplugged, battery removed, PRAM battery removed
> >for 24+ hours, and no luck. I have disassembled the machine at least six
> >times, if not ten, and only teice has is chimed and started up. Otherwise,
> >simply the green light/click of death.
>
> Didnt somone on this list have similar symptoms, and it turned out to
> be a bad connection between the CPU and motherboard ? Is the
> connection loose ? Can you try and boot it while applyling slight
> pressure on the CPU card ?
>
> Mad Dog
>
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>
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>
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----------
Duo/2400 List, The friendliest place on the Net!
A listserv for users and fans of Mac subportables.
FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml>
Be sure to visit Mac2400! <http://www.sineware.com/mac2400>
To unsubscribe, E-mail to: <[EMAIL PROTECTED]>
To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]>
Need help from a real person? Try. <[EMAIL PROTECTED]>
----------
Dr. Bott | Great Duo & 2400 stuff including 10/100 Ethernet for 2400s!
Dr. Bott | Duo Batts too <http://www.drbott.com/prod/alist/duo.html>
NineWire | If they are cool enough to host this list...
Digital Solutions | ...you should check them out! http://www.NineWire.com/
PowerBook Guy is | Click here!
Everything PowerBook! | http://www.powerbookguy.com
Midwest Mac Parts ][ <http://www.midwestmac.com>
After-market parts for Macs. ][ 888-356-1104 ][
MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879!
Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
