Dual Celeron Feat - Part 3

Doing It
Set Multimeter to diode mode and measure the -ve terminal of big yellow elco (C12) on left of PCB Figure 1.1 and pin #BR1 located on the right of CPU core. 5th pin down from the middle, center column (red dot).

Click to see enlarged image for details.

It should read around this value (actually I measured the wrong side):

Now the dentistry part, make sure you use a 0.5mm drill bit because if it is too big, you might damage the ciruits around the hole. Drill into the hole in FIG 1.2 pt 3.

Click to see enlarged image for details.

Use the multimeter again and measure the same two points, this time it should be significantly higher around 0.712. Congratulations , you have completed the easiest part of the experiment. =)

Take around 15 cm of the teflon wire and strip both ends of the wire. Find a point on the wire which will split both ends 2/5 and 3/5 , bend it sharply and strip the insulation around the point. This point needs to be soldered onto the cpu core (see FIG 1.1 red dot) one end of the wire will go to the top right pin of RP6 (see FIG 1.2 pt 5) #BR1 solder.gif (3313 bytes)

Image from Kikumarus' Hardware lab. You'll need to solder the top three left pins together.

We are working on a very small scale so a magnifing glass helps.You may need some experience in soldering, because if you short too many pins you need to remove the solder (solder sucker) or risk losing 100 bucks =)

Next solder the other end of the wire to B75 (see Fig 1.2 pt 2). You'll need to solder the wire outside the pin and NOT onto the pin because the slot-1 socket is too narrow to fit the SEPP edge + the wire.Very tricky here.

Once the above three parts are finished , you are almost half way through.Test the modified Celeron, if it is not working check your wirings , see if they have broken off. Repeat everything with the other celeron.

The journey was not smooth sailing for me so be prepared to be frustrated. To help all of you along , I shall share some of the troubles I ran into.

It helps if you have a genuine P2 chip, when I bought my Gigabyte GA-6BXDS it didn't support celerons. I didn't have a P2 so I couldn't flash my bios and had to waste time going back to SLS the next day to get it flashed.

When you put thermal paste onto the chip, make sure it does not stick to the wirings because any slight movement will break the joint. Happened to me when I inserted my Celeron into the board. Do expect your casing/CPU temperature to go up, you'll need extra cooling on top of the retail fans. I used two 12v fans and pointed them directly at the CPUs.

< Previous

Next >