Slicing open the top of a 48T02 Sun Sparc chip to replace battery is that thing hollow or filled with epoxy?

From: Richard Erlacher <edick_at_idcomm.com>
Date: Thu May 17 13:17:36 2001

You might, in fact, find that it's easiest if you chill the part in your freezer
and subsequently use a mallet and chisel to pop off the lid.

Dick

----- Original Message -----
From: "Claude.W" <claudew_at_videotron.ca>
To: <classiccmp_at_classiccmp.org>
Sent: Thursday, May 17, 2001 8:55 AM
Subject: Slicing open the top of a 48T02 Sun Sparc chip to replace battery is
that thing hollow or filled with epoxy?


> Hi
>
> I am considering slicing open the part epoxyed to the top of a 48T02 chip to
> replace or hook up a new 3VDC source. I dont wanna buy a new chip....
>
> My plan is to use a Dremel type cutting wheel and do a "lobotomy" on the
> module fitted on top of the chip.
>
> Then, either connect a new 3VDC source to this (2 alkalines in a battery
> holder) or simply replace the cells inside.
>
> If the thing (the top module with the batt and osc) is not filled with epoxy
> I imagine this can be done...does anybody know if that module is "hollow"
> and removing the top will reveal the components inside...??? Or will I just
> be cutting through solid plastic/epoxy???
>
> Other method would be to slowly grind top of module until components inside
> are revealed...
>
> Alternative method is revealing the wires coming from top part to chip by
> digging into epoxy on one side and hooking up there (from sun NVRAM faq)...
>
> Thanks
> Claude
>
>
Received on Thu May 17 2001 - 13:17:36 BST