MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 Help!! Flash PLCC32 chip without desoldering?		  New Topic  Reply to Topic
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Leolo

Spain
6 Posts
Posted - 10/21/2011 :  03:44:43  Show Profile  Reply with Quote
People,

I need to reflash a dead bios from a laptop mainboard, but my soldering skills are extremely poor and I don't want to risk killing it completely.

I'm going to buy a Wilhem USB programmer, but first I need to know which adapters are compatible for programming the chip without soldering.

I think I need this adapter:
http://www.hmcelectronics.com/product/Pomona/5733

But I don't know how exactly to connect the pins to the programmer. Would two packs of these wires be enough??
http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4244

Does the programmer have pins to connect the wires directly???

Please guys, I need your help, I have to revive this laptop as soon as possible!
Reply #1

Leolo

Spain
6 Posts
Posted - 10/21/2011 :  04:34:35  Show Profile  Reply with Quote
My idea is to buy the willem usb 4x programmer.

I'd also order two adapters like this one:
http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4306

But then, how would I connect the pins? In what order??

The BIOS is a SST39VF040 chip PLCC with 32 pins soldered directly on the laptop mainboard.

Thanks a million!
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Reply #2

ZLM

2945 Posts
Posted - 10/24/2011 :  09:18:09  Show Profile  Reply with Quote
all PLCC32 BIOS chips have to remove from the motherboard.
it must be programmed on the programmer.
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Reply #3

Leolo

Spain
6 Posts
Posted - 10/24/2011 :  12:45:10  Show Profile  Reply with Quote
May I ask why?

The Pomona 5733 adapter has been designed to clip onto soldered chips. There's no need to desolder anything.

Can I connect the cables from the Pomona adapter to your universal adapter (ADP-023) ??

Please, tell me what is the problem. The cables conduct electricity. They should work as long as they are connected to the correct pins!
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