Unofficial Overcloking Instruction: How to apply the Loctite Rear Window Defogger Kit.

Vpham97

Senior member
Sep 15, 2000
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Purpose: Using the electrically conductive Loctite Rear Window Defogger Kit to unlock (connect all the L1 Bridges) so that one can overclock an AMD Duron/Thunderbird CPU. If your L1 bridges are already connected, you will not need to perform these procedures outlined here.

More Technical Overcloking Info: Tom's Hardware

This is how I do it.

Buy some Loctite Rear Window Defogger kit from Pep Boy/Autozone for $8.
Plan A:
0) This stuff is toxic, so clean your contact lenses and put on your glasses b4 you touch this stuff.

1) If the eraser of your mechanical pencil have a thin pin attached to the eraser, you can use that as an applicator.

2) If not, stick a sewing pin to the eraser of a pencil. Angled the pin out. The more angled the pin, the easier it will be for you to apply the paint to the CPU. Stick the pin in far enough so the pin don't wobble and you have enough control of the pin. Stick your pin in at a angle

3) Stick a clean, NON-WOODEN chopstick inside the Loctite bottle and stir it up real good. Then close the bottle and shake it up real good as well.

4) Use a glass magnifier & strong light to guide you as you close each individual L1 bridges separately.

5) With your angled sewing pin, scrape some paint from the neck of your bottle.

6) Most important point: Don't write(scratch) on your L1 bridges. Rather, APPLY the paint by laying the pin flat against your cpu(this is where that angle pin come into play.) Just rest your whole pin flat against the CPU. This will mark it exactly when you use a magnifier to guide your self.

7) Close & shake the bottle each time you go back for some more paint as this stuff dry up quick!

8) Repeat, connecting the rest of the individual L1 bridges.

9) Now, inspect your CPU to see if you have accidently interconnect any L1 bridges. Put the 6x bifocal insert in your magnifier right up in your eye and inspect your CPU(Just like you see a jeweler inspect a diamond in the movies). This give a pretty clear picture of whether you have interconnect any bridges or not.

10) If you mess up, you can separate the connection by using a different sewing pin to severe the connection. You are going to scrath and leave some mark on your CPU this way, but you don't have to start the whole process over again.

11) People have reported having success using acetone(nail polish remover) to clean up the paint & start over again. This is what Loctite suggest to use to clean the applicator so that it can be use over again the next time.

12) Wait 24 hours before you turn your computer on.


Other variations:
Plan AAA:
1) Follow the instruction of plan A, use an Exacto knife(the kind doctor use). The knife is perfect, b/c it's already at an angle.
Plan B:
1) Put some Loctite paint on reynold foil.

2) Use a sharp razor(w/ the paint on it, apply(lay it flat, rest in on,not scrape) it on the CPU.

2.5) You could also use a boxcutter to apply this.

3) Wait 24 hours.

Plan C:
1) Get some index card, and cut it into smaller pieces.

2) With somebody helping you, lay the card to the two side of your bridge. Apply with a fine paint brushes. Be sure not to touch the other L# bridges.

3) Lift the card away from the CPU quickly b/c you don't want the paint to dry and get stuck on the card instead of your CPU

Plan D:
1) Use a stencil set to apply the paint.

2) If you can find a stencil set small enough, this work like plan C.

3) You can make your own stencil set by using a fine razor and carve yourself a fine stencil line on an index card. Make one for each connection.


Plan E:
Heck, use the index card to apply paint. Cut an index card into thin strip and use it as an applicator.

Plan F:
There is some guy here that has worked for Motorola for 20 yrs, and will unlock your CPU for $13 shipping included. He has a pretty good FS/FT rating. Let him do it and save your eyesight.

Plan G:
Or use the classic mechanical lead pencil trick.

I like plan A & B the best, whatever work for you.

This product(Loctite) contains a chemical which is known to the State of California to cause birth defects or other reproductive harm. KEEP OUT OF THE REACH OF CHILDREN.
After you are done, be nice and pass the Loctite to your fellow Anandtecher. This stuff is expensive. It only cost $1 bookrate to send this to somebody else.
Feel free to post your comment on my procedures. I will not be offended if your comment are unfavorable. If you want to refine any procedural point, just let me know.

More Technical Overcloking Info: Tom's Hardware

For those who have participated in the Taisol HSF group buy(100). Match the groove on your HSF to the groove on your motherboard so that you don't damage your CPU.

Also, I use a tweezer to carefully remove my warranty sticker from my CPU and stick it inside my case's wall. In case my CPU overheat, I don't burn my warranty w/ it as well.
 

XMan

Lifer
Oct 9, 1999
12,513
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You think the guys at AMD get a kick out of how far people go for a few more megahertz?
 

ErikS

Senior member
Oct 12, 1999
366
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FYI - "Goo-Gone" cleans the locktite stuff right off the chip. excellent stuff if you happen to mess up ;)
 

DaddyG

Banned
Mar 24, 2000
2,335
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The slightly 'mashed' mashed end of a toothpick works well. Don't have to wait 24hrs, defoggers need 24hrs cause they pull lots of amps.
 

Vpham97

Senior member
Sep 15, 2000
477
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Illkid,
Truefully I couldn't wait 24 hrs myself:eek:.

I finished painting it at 9 p.m., went to bed early(I usually go to bed at 3 a.m.). Woke up around 8 a.m.(by myself, I usually push the snooze for 2-3 hrs. b4 making it to class) and start everything back up. While tweaking, I forgot to plug the HSF power in(for the second time:Q:eek:). I was making exact duplicate of my harddrive for about 1 hrs. until I got a windows protection error. I though that it was b/c my CPU wouldn't do 1Ghz. There were some burning smell. That Taisol HSF must be something for my CPU not to fry after the fan not spinning for ~ 1 hrs. I though that AMD cpu fry after 7 second without a HSF.

BTW: I knew something like this was going to happen. So I had carefully remove my warranty sticker from CPU w/ a tweezer & stick it on the side of my system case.
 

Imported

Lifer
Sep 2, 2000
14,679
23
81
I just had another idea. Could you use a surgical syringe (The ones with the extra fine tip) to apply it? Might seem like a good idea to those that can get ahold of them. :)
 

pdo

Diamond Member
Feb 9, 2000
3,468
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www.pauldophotography.com
I wish you guys would have post this a month ago. Bought the Loctite Kit give a couple tries, didn't work. Got frustrated. throw it away and just get out my plain old pencils. Have been going in the fast lane ever since.
 

yokomo

Golden Member
Oct 18, 2000
1,275
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yes I am stupid what are you guy even talking about actually opening up your cpu and cupping traces I know nothing obout over clocking but wanna learn where is a good place to begin for starters I have a amd k-2 450 that I set the jumpers at 5*100 and it posts k6-500 and I thought that was all there was to it where can I learn more
 

HellRaven

Senior member
Feb 5, 2000
659
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I used a pencil to unlock my duron and now I am regretting it.

It has been 2-3 weeks since I penciled the bridges and now the graphite is no longer conductive. I don't know whether it was burned off or what but this has been widely reported.

Use one of the rear windshield defogger repair kits to start with and save yourself the trouble and risk of having to mess with your cpu and heatsink again.
 

DaddyG

Banned
Mar 24, 2000
2,335
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I have never tried the syringe deal myself but I have seen posts in other forums that said it worked.

BTW good post Vpham97. Lots of people ask the question about the 'kit'
 

Edsel

Banned
Sep 15, 2000
40
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0
I called two Pep Boys & an Autozone as well as visiting a Grand Auto and a Kragen without finding the Locktite Rear Window Defogger Kit. Anyone know some place in the Bay Area that carries the item? Or a reasonable alternative that works better than a Number 2 pencil?
 

robinhung

Member
Aug 7, 2000
164
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Don't call, people there are idiots. Not even they know there is a such kind of product exists in their shop! Look for yourself. I find one in Autozone in Concord.
 

robinhung

Member
Aug 7, 2000
164
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Forgot to tell you that was the last one in that shop but you could try the Monument Car parts in the opposite street.
 

Rudee

Lifer
Apr 23, 2000
11,218
2
76
In my opinion a small twist tie works best for applying Loctite?.

Just trim back a half-inch to expose the wire underneath, and you'll find it works great as a applicator to connect L1 bridges.
 

Netma

Member
Oct 16, 2000
169
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I purchased the Loctite rear window kit from my local NAPA store today. They keep one in stock. BTW they can order it from their nearest warehouse and have it for you the next AM, usually by 7 AM.

This takes a steady hand, I used a twist tie as suggested by Rudee. I can see where a syringe would work better. I'll fire the 750 MHZ Tbird up in the morning to see how it works. I've been overclocking this chip for about three weeks, but it is not stable beyond 900 MHZ. Was using the pencil trick. Don't know if the Loctite will make a difference, but it's worth a try.
 

Compellor

Senior member
Oct 1, 2000
889
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I think that is getting a bit carried away. Use a pencil; they're cheap and readily available. Just make sure you use a No.2 pencil (or better), and make sure the tip is very sharp after you connect each individual bridge. I've been running mine for over a month without a problem.
 

wizz0bang

Senior member
Sep 28, 2000
290
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What about using a conductive pen? I would think that would be better than using locktite??? Any reasons not too?

Does anyone know a good source for one? Rat shack didn't know what I was talking about... but I suspect they carry one if I go into the store and look around. I have a fine tipped condutive pen on order, but I have know idea when it will actually get shipped to me (ordered over a month ago).

Is there anything wrong with pulling off the heatsink and redoing it? I'm geting my TaiSol tomorrow.... I'm looking at my week 31 Duron 600 at Kt7 right now :) tempted to bust out the pencil :)
 

compuwiz1

Admin Emeritus Elite Member
Oct 9, 1999
27,112
930
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Vpham97, good post. Thanks! This time next week, I will be up to my eyeballs in Durons and T-Birds, adding them to my repertoire(sp?). :)
 

Stallion

Diamond Member
May 4, 2000
3,657
0
76
I sure do wish I knew what you guys were talking about. ;) So what exactly are you trying to do? To O/C you need to "connect" the bridge? Is the loctite conductive?

Some help please. :)
 

ErikS

Senior member
Oct 12, 1999
366
0
0
Stallion -

They're talking about "un-locking" the clock multiplier on AMD Socket A chips. You have to connect the L1 bridges & yes the locktite stuff is conductive. For a better explation of what they're trying to accomplish look under CPU reviews here on Anand's for articles on un-locking Durons and T-birds.
 

Imported

Lifer
Sep 2, 2000
14,679
23
81
I don't think you could take off the conductive pen after you apply it, or can you? The reason I'm using the Loctite is because if I make a mistake, or my CPU craps out on me, I could just take the Loctite off. :)
 

gimps

Senior member
Nov 6, 2000
383
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0
ohhhhh, the Tai-Soli is bad. With my experience it is, anyway. I have a T-Bird 800, not overclocked, running idle at 100 degrees Farenheit. Just after Windows loads up, my CPU temp is 144 degrees! I only last in Q3A about 5-10 minutes before it overheats and my comp resets.