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Old 14 February 2013, 21:45   #81
cpiac64
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chip ram fail or bad contact on connector or jumper

if you want, i can repair gratis
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Old 31 December 2018, 13:23   #82
RichardP
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a601

Hi All,

Sorry for reviving this old thread, I just got an A601 with 1/2 a Meg of RAM. As the thread is old, the links are not working and the imagery is all gone.. so I dont know what I am looking at.



There are places for 3 RAM chips, the one fitted is a 4 megabit one (512K bytes) - I am rather puzzled by 3 spaces (the RTC is obviously not fitted)

Can I just pop another 512K chip and all is good in the land?

Best Regards,
Richard
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Old 19 May 2024, 10:04   #83
DC33
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Schematic wanted

Hi all,


If anyone has a schematic for the A601 I woukd be most appreciative as I have 2 or three with battery damage which I would like to fix if possible.


Pls upload to the Zone - THANKS !!
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Old 19 May 2024, 10:56   #84
alexh
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The problem is everyone used the name A601. Are yours real CBM A601 or 3rd party? They should be so simple.
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Old 20 May 2024, 05:12   #85
DC33
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I've got x2 CBM A601 cards as per picture. Both are Rev 2A
Cheers.
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Old 29 May 2024, 12:36   #86
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Two boards going down the drain as I havent been able to find resistor, caps, etc., values. I shall keep on trying and if i do find a fix I'll let you all know....
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