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WPC95 CPU Value please (possibly faulty) - both missing the large chips

robotgreg

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Joined
Aug 11, 2011
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Swanage, Dorset
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Greg
I have two WPC95 pcbs taken from machines where the machine stopped working.

One I'm pretty sure has battery acid damage where replacing the pcb with a new one after swapping the chips over. Pics below:

IMG_20201020_111133.jpg
IMG_20201020_111137.jpg
IMG_20201020_111139.jpg


For the second one which I replaced, after swapping the main chips over from the old board, the new replacement pcb did not work initially but found out that the main processor chip was faulty and when replaced with a new chip, the new pcb then worked OK.

So not sure if this pcb (once fitted with new chips) is working fine or not . Not able to test as don't have the spare chips to populate and don't want to risk swapping over and damaging the ones I have as I'm not that technical and fear I would struggle with swapping the square chip over.

27266.jpg
27268.jpg
27269.jpg


Looking for values for both please. Replacement pcb without chips fitted cost around £200.
 
Last edited:
The last pic looks like the asic chip base is badly corroded. So a new base and 84 pins to desolder and resolder. 🙏🤔
 
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