melted lead?

[HotWire]

I have access to melted lead so I was wondering if dropping a tiny bit of melted lead ( under 30X Mag. )inside the slot on the L1-L4 of a 800 MHz Duron is the way to go.....has anyone tried this?

 

[Flat]

DO NOT DO THAT, heres why- the lead will melt once the CPU heats up and ruin the chip - heres how I know this,
As you may or may not know the lower the melting tempeture of a element the better heat conductivity, thats why Artic Silver is slighty better than alumminum grease, lower melting temp. So, in this vein of thought, I thought of GALIUM, which has practically the lowest melting temp of any metal (if I am all wrong, sorry History major not chemistry), so my grand idea is to make a thermal "pad" with galium, as it can be easly molded into shapes. I basically formed a small rectangle with the galium and "cut" a small slice of which I then placed upon the die. boot up, run FlightSim 2k max everything, and a wow! a 5 degree drop from artic silver. the worked for about 2 hours, then, tradegy strikes... my system dies, not like power dies or reboots, no the monitor sorta just fades away, and nothing i do will make the computer startup. at this point I notice... some silver-ish stuff right on the edge of my HSF, and that it is around a capacitator and thoose little silver square. My motherboard has been ruined :0 fortunatly the CPU was OK, so lesson dont use anything with a low or realativily low melting temp without some way to contain it.

 

[DaddyG]

Flat, the cpu is NOT going to get anywhere near the melting point of lead !! Straight lead would be useless to make the connectins,you'd end up with one big mess. The bridges can be soldered successfully, if your handy with a fine point iron. But, the conductive fluid in the Loctite/Permatex Defogger Grid Repair Kit # 15067 is perfect to connect the bridges. If any problems arise, its easily removed with acetone. Much simpler than messing with solder.

 

[Poof]

I thought of GALIUM, which has practically the lowest melting temp of any metal (if I am all wrong, sorry History major not chemistry),

Awww... As an FYI, think about a very obvious one, ie., mercury, which is liquid at room temp...

(/me was a chemistry major but does like history too! )

And I was gonna answer this and passed... but since I'm here... I just wanted to also note that I do recall some website where someone did solder the L1 briges as THE permanent alternative solution to the pencil or conductive liquid. I wouldn't recommend it though since the conductive stuff is more permanent than pencil, but can still be easily removed).

 

[HotWire]

Alright I give up guys........... Was thinking this might be a good idea as far as the spillage goes we are only talking about filling up a slot that's .0025 in width x .015 long of which only half or the center area needs attention hardly the beginning of a river should it decide to flow, and there are easy ways to keep it contained. But I doubt it would stray too far from its home.....as far as it not being a good conductor???? as far as removing it why would you ever want to, just leave it there!

 

[DaddyG]

I have no idea how you intend to 'flow' the lead on the tiny bridge and control it from spilling anywhere else. The bridges are gold plated tungsten and I'm not sure how they are going to react to molten lead. With a known good solution for $6.99, that CAN be easily removed if a screw up happens, is it really worth the effort ?? Maybe on a $50 Duron but not a BIRD.

 

[smp]

so the pencil trick is definately not as good as the window defogger thing? can someone point me to a how to link for this defogger thing?

 

[DaddyG]

Try searching the forums, a few months ago, somebody posted an extensive 'How To' on the Defogger Grid Repair Kit.

 

[JonB]

Here's a picture:

Permatex product catalog