[sdiy] DX7 Memory Problem

Dale Marvin dmarv at dop.com
Sun Aug 19 09:20:39 CEST 2012

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
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 


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