How to solder PLCC socket with surface mount contacts?

[larry moe 'n curly]

I want to put my motherboard 32-pin PLCC BIOS chips into sockets so I
can hot flash them if they somehow get erased, as many of them have,
but how cam I solder those sockets to the circuit board without special
equipment? It seems that their surface mount contacts are inside the
perimeter.

 

[Tom MacIntyre]

I want to put my motherboard 32-pin PLCC BIOS chips into sockets so I
can hot flash them if they somehow get erased, as many of them have,
but how cam I solder those sockets to the circuit board without special
equipment? It seems that their surface mount contacts are inside the
perimeter.

Simply, you probably can't. The board is likely multi-layered.

Tom

 

[Dr. Anton Squeegee]

I want to put my motherboard 32-pin PLCC BIOS chips into sockets so I
can hot flash them if they somehow get erased, as many of them have,
but how cam I solder those sockets to the circuit board without special
equipment? It seems that their surface mount contacts are inside the
perimeter.

Unless the motherboard was explicitly laid out with the foil pattern for PLCC sockets,
you're pretty much SoL.

How is it that you came to believe E2PROMs can "somehow get erased?" As I recall, most
modern motherboard with FLASH update capability require that a hardware jumper be manually
set before they will allow any writing to the chips.

Keep the peace(es).

 

[Tom MacIntyre]

Unless the motherboard was explicitly laid out with the foil pattern for PLCC sockets,
you're pretty much SoL.

How is it that you came to believe E2PROMs can "somehow get erased?" As I recall, most
modern motherboard with FLASH update capability require that a hardware jumper be manually
set before they will allow any writing to the chips.

Static electricity...power surge? Chernobyl virus, before the
jumpering practice began, I think...

Tom

 

[Inty]

Static electricity...power surge? Chernobyl virus, before the
jumpering practice began, I think...

I use the "hot-flashing" consisting in removing the bad programmed chip,
insert it in a working mobo, removing the flash from the working, inserting
the bad programmed chip, and flash it, from dos using uniflash !

I.

 

[larry moe 'n curly]

Simply, you probably can't. The board is likely multi-layered.

But the surface mount socket mounts on the surface, doesn't it? I
already unsoldered the BIOS chip (solder wick and a double-edge razor)
and can see all the solder pads.

 

[larry moe 'n curly]

Unless the motherboard was explicitly laid out with the foil pattern
for PLCC sockets, you're pretty much SoL.

It is laid out that way, and the motherboard working again with the
BIOS chip held in place with a clothespin.

How is it that you came to believe E2PROMs can "somehow get erased?" As
I recall, most modern motherboard with FLASH update capability require
that a hardware jumper be manually set before they will allow any writing
to the chips.

I ran NEC's Windows-based program to flash one of their DVD recorders
(ND-2500A) and then power-down the computer, but when I turned the
machine back on, there was none of the usual boot-up activity, except
for the keyboard lights blinking. All the major voltages (+5.0V,
+3.3V, +12V, CPU core, DDR memory, AGP socket) measured right, the CPU
worked fine in another mobo, and I didn't see or smell anything funny.
Also this ECS K7VTA3 mobo has no BIOS protection jumper or a setup
feature to prevent BIOS writing.

 

[larry moe 'n curly]

On Sun, 3 Jul 2005 07:52:07 -0700, Dr. Anton Squeegee

Static electricity...power surge? Chernobyl virus, before the
jumpering practice began, I think...

I'm sure the erasure was caused by NEC's Windows-based flash program
for their ND-2500A DVD writer because when I ran UniFlash to hot flash
the mobo BIOS chip, I had the chip's contents written to a file, and
that file looks like the NEC DVD writer's BIOS. The DVD writer did get
updated though.

 

[larry moe 'n curly]

"Tom MacIntyre" <[email protected]> ha scritto nel messaggio
news:[email protected]...

I use the "hot-flashing" consisting in removing the bad programmed chip,
insert it in a working mobo, removing the flash from the working, inserting
the bad programmed chip, and flash it, from dos using uniflash !

Uniflash was a lifesaver for me because Award/Phoenix's flash program
refused to let me flash the "wrong" BIOS.

 

[Inty]

I'm sure the erasure was caused by NEC's Windows-based flash program
for their ND-2500A DVD writer because when I ran UniFlash to hot flash
the mobo BIOS chip, I had the chip's contents written to a file, and
that file looks like the NEC DVD writer's BIOS. The DVD writer did get
updated though.

Why did you flash any bios via Windows ? Why didn't you flash via a boot
disk with DOS, UNIFLASH and the relative .BIN fiel ?

I.

 

[larry moe 'n curly]

Inty wrote:

"larry moe 'n curly" <[email protected]> ha scritto nel
messaggio

Why did you flash any bios via Windows ? Why didn't you flash
via a boot disk with DOS, UNIFLASH and the relative .BIN fiel ?

I was trying to flash the DVD writer's BIOS, not the motherboard's, and
the drive's maker, NEC, provided a Windows-based flasher program that
somehow managed to write the motherboard's BIOS as well. I later
learned that they have DOS-based flasher.