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Ram Component

Posted: Wed Aug 28, 2013 8:24 pm
by coco.oric
Hi, i've an atmos 48k / oric with some troubles with the chip ram.
So i'm searching to replace them.

Is the reference 4164-15 correct for this job.
http://www.electronique-diffusion.fr/ad ... words=4164

Thanks a lot
Didier

Re: Ram Component

Posted: Thu Feb 13, 2014 11:06 am
by Godzil
I will verify this evening, but yes the reference sound correct for me

Re: Ram Component

Posted: Thu Feb 13, 2014 4:19 pm
by iss
Yes, the reference is correct.
But let me share my experience. This is my current RAM array:
DSC00005.JPG
DSC00005.JPG (43.16 KiB) Viewed 3330 times
As you can see I have 2x4564 + 6x8164 chips from 2 different manufacturers (I don't recall why I replaced the 2 chips) and everything works like charm.
One day I decided to replace them with new 8 chips from one manufacturer - just for better look :).
I buy 8x4164 new Matshushita chips:
DSC00006.JPG
DSC00006.JPG (28.51 KiB) Viewed 3330 times
and install them carefully, power-on and all seems to work, but the surprise begin when I connect the microdisk - no start at-all.
I changed with the old chips - and all works again.

So, the best practice is to try first then buy :).

Re: Ram Component

Posted: Tue Feb 25, 2014 5:49 pm
by Godzil
So yes I confirm the spare DRAM I have, have this reference :)