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Old 18 July 2019, 03:10   #1
quantum8
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3000 rom pcb

I've recently gained an a3000 16/50 and it looks to be in pretty good condition so far!


On opening it I came across a PCB installed over the ROM slots.



I'm just wondering the best way to remove this to access the ROMs so I can upgrade them.


And will I be able to use 27C400 chips as a drop in replacement or will I have to use another type?
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Old 18 July 2019, 12:42   #2
Jope
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Sometimes the ROM tower is soldered down with a few posts near the sockets. Sometimes it's just pushed in.

27c400 chips are fine, you must continue to use the ROM tower and insert the chips into the tower.
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Old 18 July 2019, 15:02   #3
quantum8
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Cheers, I’ll take a look in a couple days for those posts as I have the feeling that what this board will have.
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