MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 GQ-4 w/ADP-003 AM29F800B erasing issues		  New Topic  Reply to Topic
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biggestsonicfan

USA
3 Posts
Posted - 11/10/2025 :  14:04:46  Show Profile  Reply with Quote
I have been reading, erasing, and writing AM29F800BB chips for a while now, but as of late the "Erasing time" takes 0.00 seconds without actually erasing the chip. I'm unsure if my programmer is damaged but I can still read the chips just fine.
Reply #1

biggestsonicfan

USA
3 Posts
Posted - 11/14/2025 :  14:46:29  Show Profile  Reply with Quote
After "erasing" the VPP and VCC lights remain on.
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Reply #2

biggestsonicfan

USA
3 Posts
Posted - 11/22/2025 :  10:55:56  Show Profile  Reply with Quote
I have purchased a new unit and the behavior is the same. I am unable to erase/write to AM29F800BB/T chips.
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