[rescue] Ultra 2 NVRAM - failed fix

[Mike Spooner]

Must it be the M48T58Y variant (4.5-5.5V), or will the M48T58 (4.75-5.5V)
also work in the Ultra-1/-2/-5/-10/etc?

Regards,
Mike Spooner

-----Original Message-----
From: rescue-bounces at sunhelp.org <rescue-bounces at sunhelp.org> On Behalf Of
Jonathan Chapman via rescue
Sent: 01 November 2024 11:25
To: The Rescue List <rescue at sunhelp.org>
Cc: Jonathan Chapman <lists at glitchwrks.com>
Subject: Re: [rescue] Ultra 2 NVRAM - failed fix

> No point buying 59s as mentioned as they have not been made maybe for
nearly 2 decades and batteries will be dead. Many sellers of these crap
items. 

There's also these disasters floating around, some eBay seller charges
$70-some USD for this:

https://imgur.com/a/psa-those-expensive-sun-nvrams-on-ebay-82uqhKs

So, yeah, don't buy off eBay/AliExpress/Amazon/whatever.

> I wish they put date stamps on these chips.

They do. The fakes come with fake datecodes.

> That is why you need to use official disti and get the 58 which will be
recent stock.

Yes, this or rebuild your originals. You can do the usual "cut into it and
patch a battery in on wires" method, or we designed a repair board because
we had so many to refurb on a big job:

https://www.tindie.com/products/glitchwrks/gw-48t59-1-module-repair-board/

The above has the benefit of being faster, especially if you're doing a
bunch, cleaner, and it's about the same height as the original (doesn't
matter so much on the Ultra 2).

Thanks,
Jonathan

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