[rescue] Ultra 2 NVRAM - failed fix

[Peter Stokes]

Hi Ian

Good stuff, glad you sorted it in the end.

Peter

Sent from my iPad

> On 1 Nov 2024, at 21:08, silcreval via rescue <rescue at sunhelp.org> wrote:
> 
> Sorry Peter - I missed the bit about the 59Y - ugh. They will go back anyway.
> 
> I did order a 58Y at the same time from a different supplier and it worked perfectly, so the Ultra 2 is back in business.
> 
> - Ian
> 
>> On 1 Nov 2024, at 16:00, rescue-request at sunhelp.org wrote:
>> 
>> Send rescue mailing list submissions to
>>    rescue at sunhelp.org
>> 
>> To subscribe or unsubscribe via the World Wide Web, visit
>>    http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
>> or, via email, send a message with subject or body 'help' to
>>    rescue-request at sunhelp.org
>> 
>> You can reach the person managing the list at
>>    rescue-owner at sunhelp.org
>> 
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of rescue digest..."
>> Today's Topics:
>> 
>>  1. Re: Ultra 2 NVRAM - failed fix (silcreval)
>>  2. Re: Ultra 2 NVRAM - failed fix (Peter Stokes)
>>  3. Re: Ultra 2 NVRAM - failed fix (Jonathan Chapman)
>> 
>> 
>> With the new chip in, the Ultra 2 startups up and seems to skip the =
>> diagnostics, appart from the basic POST memory checks etc. I then =
>> program the NVRAM as usual and on power on, it always resets the NVRAM =
>> to default values, which isn't too useful :)
>> 
>> I've tried with machine types of 80 and 83 with the same results. It's =
>> not clear to me what the Ultra 2 machine type should be, so tried both =
>> settings.
>> 
>> I'm guessing the battery has gone on the new chip. I wish they put date =
>> stamps on these chips.
>> 
>> Just FYI the OBP reports as 3.25 so I'm definitely not on '4'.
>> 
>> - Ian=
>> 
>> 
>> 
>> 
>> 
>> 
>> 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. Tha=
>> t is why you need to use official disti and get the 58 which will be recent s=
>> tock.=20
>> 
>> Peter
>> 
>> Sent from my iPhone
>> 
>>>> On 1 Nov 2024, at 10:22, silcreval via rescue <rescue at sunhelp.org> wrote:
>>> =20
>>> =EF=BB=BFWell the 'new' M48T59Y arrived, but failed in a slightly differen=
>> t way.
>>> =20
>>> With the new chip in, the Ultra 2 startups up and seems to skip the diagno=
>> stics, appart from the basic POST memory checks etc. I then program the NVRA=
>> M as usual and on power on, it always resets the NVRAM to default values, wh=
>> ich isn't too useful :)
>>> =20
>>> I've tried with machine types of 80 and 83 with the same results. It's not=
>> clear to me what the Ultra 2 machine type should be, so tried both settings=
>> .
>>> =20
>>> I'm guessing the battery has gone on the new chip. I wish they put date st=
>> amps on these chips.
>>> =20
>>> Just FYI the OBP reports as 3.25 so I'm definitely not on '4'.
>>> =20
>>> - Ian
>>> _______________________________________________
>>> rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 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 r=
>> ecent 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 bun=
>> ch, cleaner, and it's about the same height as the original (doesn't matter=
>> so much on the Ultra 2).
>> 
>> Thanks,
>> Jonathan
>> 
>> 
>> 
>> 
>> _______________________________________________
>> rescue maillist  -  rescue at sunhelp.org
>> http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org
> 
> 
> _______________________________________________
> rescue list - http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org