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-4X stopped working		  New Topic  Reply to Topic
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roybridge

2 Posts
Posted - 11/15/2016 :  12:14:06  Show Profile  Reply with Quote
I only tend to program ST M27C1000 EPROMs. All was working up until last week, but now, every time I try to program, it fails at 6%.

The EPROMs themselves are ok (I've blanked them, and programmed with a different programmer).

I can verify and blank check OK, but not programme.

Any ideas or suggestions?
Reply #1

ZLM

2945 Posts
Posted - 11/21/2016 :  14:25:29  Show Profile  Reply with Quote
what is your exact error message?

If there is no contacting problem involved, then the problem may come from the programmer hardware.
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Reply #2

roybridge

2 Posts
Posted - 11/27/2016 :  12:01:43  Show Profile  Reply with Quote
This is the exact same error I get with each M27C1000 device that I try to write with my GQ-4X.

The devices are OK as I can program them with my TL866A programmer.

Image Insert:

18280 bytes
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Reply #3

ZLM

2945 Posts
Posted - 12/03/2016 :  21:58:54  Show Profile  Reply with Quote
The programmer A13 pin damaged.
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