The key to having a chance at success is that all the joints have to melt at about the same time, so that surface tension can pull the cracked joint back together. The heat gun produces a stream of hot air, which you can use to evenly heat the chip and melt all the solder joints at once.
The soldering gun delivers its heat by conduction from a relatively small hot tip. This works fine when soldering a single wire, but on a BGA it just creates a single hot spot, cooking that part of the chip and melting the closest joints, while the rest of the joints remain solid. You can pick up a heat gun on eBay real cheap.
People say you can do it with a hair dryer, but it takes much longer and generally doesn't last long either before the issue comes back. Remember you will need a thermal compound too, arctic silver 5 is the best. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Differences of Solder Gun, Heat Gun? In Ref. I have my own hypothesis, and I only found two clues to support my thinking.
They shipped with a thin layer of a pink or gray material on the heat sink. I believe that when you heat up the CPU and GPU, that cheap, gummy thermal compound is softened up quite a bit, maybe even partially liquefied. I once saw a chart comparing the thermal transfer properties of various brands of CPU thermal compound, and that chart included dielectric grease. My memory tells me that dielectric grease performed within a few degrees Celsius of the best performer.
The proper fix for this would most likely be a professional reball with a new IC unlikely you can find one. Anyhow, the biggest reason for failure to reflow is not enough consistent heat. There is a fine line between reflowing and absolutely melting the solder, so one needs to be aggressive without going over board. If nothing else, get a couple of temperature probes and see what heat you generate. You also need to make sure that you apply the thermal paste properly etc.
Follow the guide from here and keep on trying. It is a flip Chip design which has shown multiple failures for the PS3 as well as Xbox which uses the same design for their IC. Here is a very "quick and dirty" explanation of what causes most of the RROD. It is not always a failure of the solder balls which connect the Flip Chip BGA package to the motherboard.
As you can see the "bumps" are what actually connects the die to the substrate to make the chip complete. If these bumps fail, the die does no longer make contact with the substrate and thus no contact with the circuit board. The chip has failed. Once off you will see it is held in place by a blue screw. Remove this screw. Use the pull tab on the hard drive to remove it out of the unit by sliding it forward and then pulling straight out.
At the top of the unit there is a rubber tab covered by another warranty sticker. Yes, you will be removing the warranty sticker and voiding your warranty. Under this cover should be a screw. Remove this screw and the top will slide off. Remove the screws. Now with the outer shell removed your unit should look like the image above. Remove the screws from the highlighted areas. Now the top support is free.
Be cautious as there is a ribbon cable that connects it to the main unit! Remove this part from back to front and then disconnect the mentioned cable. You can now set this part aside. Disconnect the Blu-ray player. Now you should start to see the inner workings of your PS3. On the right hand side of the unit is the Blu-ray player with a wire running to the front center as shown.
Unplug this wire and gently lift the player. Underneath the player is a ribbon cable. Gently reach under and disconnect this cable and set the Blu-ray player aside. Unscrew the antenna wiring. Behind where the Blu-ray player used to be you will find a chip, which must be unscrewed.
This chip has a wire which runs down the center of the assembly and plugs into another chip. Unplug it from this chip and set it aside. Release the power supply. Above the chip that you just unplugged the wire from is the power supply.
A set of wire plugs is just between these components and must be unplugged. After removing the 4 screws that hold the power supply down, lift the component straight up. Now you can unplug the back cables from the power supply and set it aside. Remove the chip.
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