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)
 sst39vf040
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shellton

3 Posts

Posted - 12/16/2012 :  14:40:23  Show Profile  Reply with Quote
Hello ,

GQ-4x
ver 5.17b

Trying to program sst39vf040 .
i Have two chips and cannot read them correctly. On verify first chip breaks at the first bytes , on second it breaks at 17%.
I tryed to erase them , to program something at the begin , but without success.
Can you help me ?
That i need to check ?

Regards,
Reply #1

ZLM

2945 Posts

Posted - 12/16/2012 :  17:32:19  Show Profile  Reply with Quote
Check followings:

1. your adapter is correct.
2. your chips are good chip
3. check chip pin contacts.
4. try other good chip and make sure the programmer is good.
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Reply #2

shellton

3 Posts

Posted - 12/23/2012 :  07:53:32  Show Profile  Reply with Quote
Hello,

Today i checked the same adapter an chips on xeltek programmer.
Reading, erasing and writing was successuful.
Can you check and confirm , that sst39x series working on your device ?

Regards,
Linas
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Reply #3

ZLM

2945 Posts

Posted - 12/23/2012 :  16:23:47  Show Profile  Reply with Quote
Yes. sst39vf040 is supported the it should work.

Do you use any adapter?
Can you confirm the adapter is the good ne?
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Reply #4

shellton

3 Posts

Posted - 12/24/2012 :  09:20:50  Show Profile  Reply with Quote
yes . I`m using plcc32 to dip adapter (it's pin to pin).
at this moment i have three vf040 chips , and i`m getting errors on reading all this chips. Erasing did not working at all/
Some days ago i got xeltek programmer.
I used the same adapter and chips. All three chips was programed without problems.
I think , that the promlem is in GQ4.
Regards,
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Reply #5

ZLM

2945 Posts

Posted - 12/27/2012 :  18:48:30  Show Profile  Reply with Quote
If you think the GQ-4X has problem, then you can contact support@mcumall.com, send the programmer with one of your chip for further testing. You will get a replacement if the problem confirmed.
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