[rescue] Sun NVRAM Battery Replacement

Jonathan Patschke jp at celestrion.net
Wed Oct 14 14:36:20 CDT 2015

On Wed, 14 Oct 2015, Lyle Bickley wrote:

>>          http://jonathan.celestrion.net/photos/nvram-hack/
> Thanks! Had seen this written up before - but your pictures were very
> helpful - and your idea of using the top and centerline of the NVRAM
> carrier as a guide in knowing how to best "partition" the battery from
> the chip is a great help.

You're welcome!  I ruined a couple of NVRAMs before figuring that out.  I
can't say that all the compatible parts consistently have the battery at
the same end, but all the ST packages I've had open were laid out

Also, if you're doing a battery replacement for a machine that has sbus
slots just over the NVRAM, you might need to use extra-long leads and
locate the battery holder elsewhere.  I updated that album with a few
photos of an E3000 clock board and E3000 I/O board to illustrate that.
I'm using much thicker wire than necessary, so I'm not going to worry
about the length of the run.

Jonathan Patschke | "Right now, computers, which are supposed to be our
Elgin, TX         |  servant, are oppressing us."
USA               |                                       -- Jef Raskin

More information about the rescue mailing list