[sdiy] cr-78 ram replacement

[Anders Sponton]

I remember using a pinball RAM for the PAiA Proteus synth way back.

Skickat från min iPhone

> 3 juli 2016 kl. 16:36 skrev J Brave <onephatcat at earthlink.net>:
> 
> Hi does anyone know how to determine which of the many variations of the 5101 ram chip would be the correct one? This is the one listed in the service manual: UPD5101C-E  
> 
> But I'm not finding that exact thing for sale - people are talking about replacing with Bally pinball ram - also 5051 on some forums, also there is a company selling an "equivalent" chip - but how do I know if I have the right matching chips? The pinball ram is far less pricy than the originals:
> 
> Pinball: https://www.ebay.com/itm/251898604630 
> "Equivalent":  http://www.vetco.net/catalog/product_info.php?products_id=5199
> 
> Joel
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