4 Jan
2002
4 Jan
'02
2:53 p.m.
On Fri, 4 Jan 2002 tothwolf(a)concentric.net wrote:
> Thanks for the advice. Found the battery, or
rather what's left of it.
> Whatever it is that leaks or gasses out of Lithium batteries has eaten
> into most of the steelwork. I will have to replace the floppy drive
> and clean up metalwork. :-(
Are you sure it's a Lithium battery? I think most
of these used NiCads,
and recharged them when they were powered.
It's definitely Lithium (Eternacell B9632T 3.6V). I think the machine must
have been on it's side when the battery leaked. There is a lot a corrosion
damage to the FDD mounting hardware and the FDD head stepper motor.
Anything zinc plated seems to have been badly corroded.
The main board appears to be OK. Two crystal cans are badly corroded
(zinc plated) and some of the solder joints in the area are a little "dull".
Everything functions normally apart from the erratic FDD. FDD and HDD
have non standard 26-way and 40-way connectors respectively. I've found
a source for replacement FDD, ecdmagnetics.co.uk.
A number of the boards I repaired after the Houston
floods had damage from
the Lithium coin cells around the holders. It was an dark orange-red color
and didn't seem to be highly alkaline or acidic. A thorough cleaning with
baking soda and a plastic brush seemed to get rid of this stuff.
Before I get around to cleaning the boards I will need to figure out how to
disconnect the display. The connecting cables are hardwired to the main
board :-(
Thanks for the advice
Chris Leyson