[sdiy] DX7 Memory Problem

gregory zifcak zifcak at hotmail.com
Mon Aug 20 15:15:09 CEST 2012

Thanks for the tip, unfortunately they are not socketed.

> Date: Sun, 19 Aug 2012 00:20:39 -0700
> From: dmarv at dop.com
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] DX7 Memory Problem
> On 8/18/2012 11:39 PM, gregory zifcak wrote:
>> Cool, thanks for the info. Yeah I have memory protect off. I found the self-test procedure and it fails at the RAM check. I will check the chip enable lines as you said; I'm guessing one or both of the RAM chips died. The chips are 8k, part number TC5564PL-15. That would be great if you have some spares.
>> Greg
> Greg,
> If the RAM is in a socket, try reseating it before replacement. I'm in
> Southern California and have seen lots of problems from corrosion on
> sockets.
> Dale
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