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-3X and EPROMs problem
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_n3o_

10 Posts

Posted - 05/31/2012 :  15:54:55  Show Profile  Reply with Quote
HI, i have a brand new GQ-3X, i have already burnt 20 EPROMS sucessfully (27c801 and 27c1001) but suddenly , without any particular reason, all the EPROMs programming i have tryed stops at 53%

I have tryed with 8 different EPROMS, restarted my computer, but it's always the same thing.

When it comes to 53% the VPP led goes low and then blink rapidely
(here is a video of the led :h**p://youtu.be/LHSNYryrGxQ)

Any idea to solve it ? do i need to change a damaged component (i have skill for it) or do i need to send it back to MCumall ?

Thnaks in advance for your answer
Reply #1

ZLM

2945 Posts

Posted - 05/31/2012 :  19:57:30  Show Profile  Reply with Quote
check if programmer read correctly.

If reading is not good, then you need to check all pin contact with the programmer ZIF.

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Reply #2

_n3o_

10 Posts

Posted - 06/01/2012 :  01:51:40  Show Profile  Reply with Quote
Thank for your help ZLM,
it reads correctly :/
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Reply #3

_n3o_

10 Posts

Posted - 06/07/2012 :  14:58:55  Show Profile  Reply with Quote
after a lot of test, the only thing that i can say it's that now i have a brand new programmer that can only burn eproms under 512k ....\o/
very usefull. thanks for your support ....
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Reply #4

_n3o_

10 Posts

Posted - 10/12/2012 :  05:39:29  Show Profile  Reply with Quote
up

Asked MCumall ebay webshop for help or warranty = no answer

If you can tell me how to repair it i can certainly do it, but i need to know what to do ! !
Is it a capacitor problem? a memory problem?
When i try to burn eproms larger than 512k it fails everytime.

Best regards and please help me !
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Reply #5

ZLM

2945 Posts

Posted - 10/13/2012 :  11:37:29  Show Profile  Reply with Quote
"no answer"? that is not the MCUmall stlye.

Write to support@mcumall.cm with your order number, you can get a replacement if it does not work for you.
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Reply #6

_n3o_

10 Posts

Posted - 10/15/2012 :  02:06:33  Show Profile  Reply with Quote
Thanks for your answer , i'm gonna copy past my previous mail (with all the informations) to this email adress.

Thanks a lot (i've just bought a gq4X from a friend but 2 are betters than 1 ^^)

is it .cm or .com ? i've already emailed .com and they always ask me to do the same test.

Edited by - _n3o_ on 10/15/2012 02:15:16
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