Hi Mike,
I tried to replace the NiCd battery leaving the unit without battery for
few days and when I applied the new one I left it on charge without turning on
the unit for couple of days.
I think this should have cleared the garbage in the RAM :)
I also replaced most of the electrolitic capacitors and the voltage levels are
fine.
I managed to test also the LCD and it works correctly.
Thank you
Mauro
Sent from my iPad
On 03/dic/2018, at 23:14, "Mike Stein" <[email protected]> wrote:
> Might just need a short rest and a cold boot; turning off the memory switch
> might well have scrambled the RAM contents.
> ----- Original Message -----
> From: Mauro Pintus
> To: [email protected]
> Sent: Monday, December 03, 2018 5:00 PM
> Subject: Re: [M100] Olivetti M-10's for a new home
>
> Hi Jan,
> i actually don't know for sure which component is preventing it to
> complete the boot.
> It was warking fine while accidentally I flipped off the NiCd battery switch.
> Now if I turn it on nothing appear on the display, I can just regulate the
> contrast...
> I tried to blindly write a basic loop to make it beep but it doesn't work.
> My hope was to have a working unit to use as a reference.
> I discussed this repair couple of time here in the list and several people
> provided so many useful informations.
> Non i know better my M10 but I havent identifyed yet the culprit.
>
> Checking some signals with the oscilloscope it looks like it is looping after
> a fix time without completing the boot.
>
> Francesco Messineo (another user of this list) wrote me in this days to offer
> some help and he suspect I damaged the RAM. Thank you again Francesco.
> I bought a desoldering iron and I hope in the next few days I'll find the
> time to try removing all RAM modules and fit one at a time in the first
> socket (hoping one module is still alive).
>
> Before I'll do this I was wondering if someone have a custom ROM that will
> test the RAM or other hardware peripherals providing some kind of feedback on
> a GPIO or something like that.
>
> Mauro
>
> BTW Francesco has a Youtube channel related to retro computer that worth
> mention:
>
> https://www.youtube.com/iz8dwf
>
>
>
> Sent from my iPad
>
> On 03/dic/2018, at 19:06, Jan Vanden Bossche <[email protected]> wrote:
>
>> Mauro,
>>
>> What do you need to repair your M-10?
>>
>> Greetings from the TyRannoSaurus
>> Jan-80
>>
>>
>> From: Mauro Pintus <[email protected]>
>> To: [email protected]
>> Sent: Saturday, 1 December 2018, 16:12
>> Subject: Re: [M100] Olivetti M-10's for a new home
>>
>> Thank you Jeff, really appreciated.
>> Now I keep my finger crossed :)
>>
>> Have a nice day
>>
>> Mauro
>>
>>
>>
>> On Dec 1, 2018, at 3:59 PM, Jeffrey Birt wrote:
>>
>>> Mauro,
>>>
>>> You have a need for them, so you should have them if the original person
>>> does not speak up. Fixing your machine is a better use. I have no specific
>>> need, just thought it would be neat to have a machine with AZERTY keyboard.
>>>
>>> Jeff_Birt
>>>
>>> From: M100 <[email protected]> On Behalf Of Mauro Pintus
>>> Sent: Saturday, December 1, 2018 7:50 AM
>>> To: [email protected]
>>> Subject: Re: [M100] Olivetti M-10's for a new home
>>>
>>> I was soo exited I didn't see the other answer from Jeffrey, I'm sorry...
>>> Hope we can find an agreement, I'm really interested but I don't want
>>> bother anyone.
>>>
>>> Mauro
>>>
>>>
>>>
>>> On
