Thanks for the response, Roger. The corrosion in the CDROM activity light area was white powder. The corrosion in the IR board and lens area was almost entirely rust color. The corrosion climbed the IR board and got into the shielded circuitry. It was so bad I had to toss the IR board. The lens, of course, was easily washed. I also found corrosion under the metal lining in the IR area of the bottom case. If the corrosion is spill related then I guess water was spilled over the keyboard and entered the two area's. It had to be water as there is no stickiness or discoloration such as from tea or coffee. I've cleaned up those area's with a baking soda solution and thoroughly dried with compressed air. I hope no further corrosion occurs. I've got one of the two 3400's up and running. It's a 3400/240!! I think the corrosion one is a 3400/200. It's going to take a while to find parts before I know if it will work. Chuck
> > > Message-ID: <[EMAIL PROTECTED]> > Date: Wed, 03 Sep 2003 09:15:32 -0400 > From: Roger Volk <[EMAIL PROTECTED]> > Subject: Re: 3400 Corrosion > > Chuck, > > If I remember right the area's you describe have galvinized steel in the > mountings, > will check when I get home, but if the corrosion products were white and > powdery combined with rust thats probably the case. I have several of these > machines and noticed a similar occurance in the parts machine, but assumed > the cause was a spill. > > Roger > > Chuck wrote: > > > I recently picked up a few 3400's with problems. I bought them from > > someone I know who used them until a few years ago when they were > > replaced by newer laptops. None boot at this time but that will change. > > In taking one apart I've discovered corrosion in two strange places. The > > IF card and window had to be tossed out due so much corrosion that they > > became stuck to each other. The bay was corroded too. The bay where the > > CDROM/Floppy drive activity lights sits was also corroded but there was > > not sign of corrosion on the light or wiring. > > (clip) > > Has anyone seen this corrosion problem before? > > Does anyone have a spare IR board and window willing to part with? > > Chuck > > > > ------------------------------ > -- PowerBooks is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> PowerBooks list info: <http://lowendmac.com/lists/powerbooks.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/powerbooks%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
