MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 GQ-3X: EPROM chip detects as FFFF

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T O P I C    R E V I E W
bill_long@earthlink.net Posted - 03/05/2013 : 14:33:39
I just purchased a GQ-3X and installed the software and driver on two computers:
1) Windows 8 64bit
2) Windows 8 32bit

The driver appears in Device Managers under "Universal Serial Bus Controllers"

I can't get around the error in the attached screen shot.

I tried two different W27C512s. I tried a M27C512. All three chips get the same error.
I'm running as administrator.
I'm using software version 6.21.
I placed the chip(s) as the documentation suggests (pin 14 of the chip farthest away from the ZIF lever)

I'm doing something stupid, but don't know what.

Thanks javascript:insertsmilie('')

Image Insert:

107.51 KB

Image Insert:

31.14 KB
1   L A T E S T    R E P L I E S    (Newest First)
ZLM Posted - 03/06/2013 : 20:31:52
Possible reasons:

1. bad chips.
2. poor pin contact.
3. wrong pin 1 orientation on ZIF socket.

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