Asus Prime B360M-K motherboard problem

[Rofix]

Hello everyone, I wanted to ask you for some advice, I have this Asus card that is giving me problems, with the thermal camera I detected some components that are getting very hot, I removed a component that was short-circuiting but I still have the super I/O that is getting very hot, can something be done to fix it? Thanks to everyone for any advice

[DynaxSC]

Hi Rofix, 88 C is very hot for a SIO. You need to replace it, it is most probably shorted inside due to eg. an electric overcharge. You need for this a preheater and hotair station. The plastics around must be very good isolated from the hot air in order to not melt them. You need 7-8 layers capton tape to be sure. I also use tetra pack in combination with capton tape, as capton is quite expensive, capton tape towards heat. If you do not have preheater/hotair, you might cut/grind off the legs of the SIO at the edge of the SIO body, and remove the remained legs with solder iron. The pads are very easy to be torn away from the board, so this must be done very, very carefully, so no force is applied to the legs soldered to the pads. Then you could clean the pads and solder a new SIO with an iron and a big ball of tin. The iron must be somewhat strong, 80-100w otherwise it will be difficult to melt the tin. Motherboards have inside copper layers for heat distribution, and it is quite difficult to heat them, as the heat is spread away through the copper layers quite effectively. You can also misuse a traditional kitchen electric cooking heater as an preheater (not the modern induction type), keep some 2-3 cm distance, temp ca 270-300 C, give some 6-10 minutes preheating, before soldering.

BTW, if the reason for the SIO failure was an electric overcharge, then there might be more devices demaged. If the chipset is also affected the repair might be economically not reasonable, as chipsets are quite expensive. Also ESD protection devices on USB/LAN ports might be shorted.

[Rofix]

Hi DynaxSC , thank you, I managed to remove the super I/O, now I'm looking for the model to order, thanks for the advice