[rescue] Ultra 2 NVRAM - failed fix

[silcreval]

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:
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> Today's Topics:
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>   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
> 
> 
> 
> 
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