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Posted
on November 16, 2001 by Per
Hansson
If
you use just a usual rubber gum and rub on the L contacts
you will see the wires underneath which I’m talking about.
(Look closely on the middle L11 Bridge in the picture of the
XP CPU above which I did this on.) So what we need is
something which isn’t conductive, my first attempt was
with super glue but that turned out to be a less smart idea,
if you unintensiously get the glue on the L1 bridge contact
points the conductive ink will not make contact between them
and thus the unlock will fail…
Instead
I found out that thermal grease worked perfectly fine,
(note: just use the usual cheap stuff, Arctic Silver is
slightly conductive whatever they tell you.) Now just smear
the thermal compound over the five L1 contacts and then use
a piece of paper to remove the compound which is above the
valleys, leaving only five small dots between the L1
contacts where the “valleys” previously was and thus
covering the wires underneath from the conductive ink which
we are about to apply.
Next
use the needle and gently apply the Conductive ink above the
compound between the L1 contact points, take a sharp razor
and gently draw a line between the 5 rows of
contacts to make sure that they aren’t shorting out with
each other, and last put some Scotch tape or other
transparent tape over it all. (Use transparent tape so you
can see that the conductive ink doesn’t float together and
short your CPU out when you put it on...)
Also
if you are using a shim make sure that your piece of tape is
smaller than the gap which is supposed to be above the L1
bridges on them shim, otherwise the combined height of the
shim plus tape might become to high and thus your
heatsink might get inefficient contact with the CPU core…
Last
but not least apply some Arctic Silver 2 on the CPU core and
you are all ready to go. (If you are wondering the
thermal-sensor in the picture is a “comp-u-nurse thermal
probe” which I have removed the shrink hose from the
contacts of, (it was to thick otherwise and caused to
heatsink to not make contact with the CPU, it’s being held
in place with super glue.)
Next
start your computer up, if it doesn’t start try to reset
your CMOS with the jumper on your mainboard, if it still
doesn’t start you haven’t properly connected all the
bridges, start over again…
If
you computer does start but you are unable to change your
multiplier to anything but the default you have failed to
connect the L1 bridges to, start over again…
If
you are only able to select multiplier 11x though 12,5x you
either skipped the second step in the article, (thermal
compound.) Or you failed to properly insulate the contacts
in the “valleys” with the non-conductive thermal
compound, if you really need multipliers below 11 start all
over again, otherwise consider it a success.
If
you are able to select all multipliers: Congratulations, you
have succeeded in fully unlocking your AMD Athlon XP CPU!
If
you used super glue to insulate the contacts in the valleys
but didn’t apply it properly, i.e. you are either unable
to start, select any multiplier other than default, or below
11 then using some very fine grit sandpaper and sand
a wee bit on the L1 contact points could allow you to
succeed, you can use a multimeter to measure if you have
good contact from them, a value below 1 ohm means that you
have good contact, above that means that you might have some
dirt on the contact point preventing good contact, either
clean them with some alcohol or use the sandpaper till you
get a value below 1 ohm.
(Measure
from any of the L1 contact points to the lone “dot”
between the CPU core and lower right of the CPU, which is
ground).
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