3 Jan
2003
3 Jan
'03
10:23 p.m.
Tothwolf wrote:
I doubt Dalsemi want anyone to replace the
batteries, period. The problem
is, the cover is manufactured with spacing "ribs" running the length of the
cover. These have been embedded in what looks like ABS plastic or some form
of potting compound. Said potting compound is resistant to hacking with a
knife and also acetone. I drenched the thing in acetone and only succeeded
in removing the screenprint. Admittedly, the acetone I used was not straight
acetone, but "nail polish remover".
I've heard
of it being used to nuke potting compound. Should work on
an RTC, but it'll probably rip up the screenprint on the caphat at
the same time. I don't have any MEK, nor do I want any - a bit of
hacking (in the literal sense) with a craft knife/Dremel should get
the caphat off.
Well...I'd expect it to do a fair job at dissolving or softening the
potting compound. I imagine it would indeed remove the screen print
too. I do wonder if it might also dissolve the 'caphat' as you call
it. I think it is made of a nylon or nylon/fiberglass blend plastic.
If thats the case, it might not hurt it at all. I wonder if Dallas
would tell us what it is made of? :) Having cut away other potting compounds in the past, I
think I'd
prefer to dissolve such things over hacking at them with an Xacto and
or Dremel.
Same here.
Those Lithium cells are also *very* toxic/dangerous. I
think I'd be
more worried about accidentally cutting into it with a Dremel than
I'd be about MEK handled safely under proper conditions.
Which is why I go
*very* gently if I use a knife. Anyone want to try dunking
a DalSemi RTC or NVRAM module in MEK or some other solvent?
Later.
--
Phil.
philpem(a)dsl.pipex.com
http://www.philpem.dsl.pipex.com/