MSI Pro Z790-P Wifi 1missing CPU pins

[DominanceINC]

Hello,

I am a new forum member. I found a broken MSI motherboard with lot of problems. The other problems need schematic. Because, the missing parts what were breaking down with screwdriver and pliers at a standoff.
So, its actual problem is a missing Vcore and Gnd pins in the CPU socket. My question is that, can it be used safely without these two pins? Only for testing at first, while the other problems will be solved. I would wish repair them later.

The other spots are thermal phaste, because, the under educated installer of the CPU did wipe the contacts of the CPU up with thermal phaste. There was lot of work to clean it down from everywhere.

Regards

[DynaxSC]

Hi, single missing vcore/gnd pins are no problem, you can use the board like that, only condition is the pins cannot be bent in a way, that a short with neighbour pins is possible. Regarding vcore/gnd pins they are hundreds of them in parallel, so single missing pins have no influence. Theoretically it might happen that just these pins which are missing on your socket are not connected inside the cpu, in such a case the cpu will just not work or not work correctly. But you can check this on the corresponding cpu pads with a meter before. Most probably all the vcore/gnd pads are also connected internally inside the cpu, but it is not 100% sure, as there is no documentatuon about this available.

[DynaxSC]

Hi, single missing vcore/gnd pins are no problem, you can use the board like that, only condition is the pins cannot be bent in a way, that a short with neighbour pins is possible. Regarding vcore/gnd pins they are hundreds of them in parallel, so single missing pins have no influence. Theoretically it might happen that just these pins which are missing on your socket are not connected inside the cpu, in such a case the cpu will just not work or not work correctly. But you can check this on the corresponding cpu pads with a meter before. Most probably all the vcore/gnd pads are also connected internally inside the cpu, but it is not 100% sure, as there is no documentatuon about this available.

[DominanceINC]

Hello DynaxSC,

Thank you for your answer. I will check the paralellism of those networks out. I hope so they are on same circuits, independently from the number of the PSU chanels of the CPU. Mostly, because, the same CPU socket has meny of PSU designs and number of chanels on diferent motherboards.

The next step is the bigger problem. It needs boardview request, but. There is a 5V switch controller damaged near to the CMOS battery, and 3 of damaged or missing resistors what are on just two of motherboards (plus a renamed third one) in this Z790 serie. However, most of the MSI motherboards have got this 5VDUAL swithing controller on diferent places. Probably, the scheme is same because, it switches the standby and the 5V onto the dual 5V. But, if it is not sure while, I do not solder on anything anywhere. I am waiting for some points on the Elvicom forum for the downloading the boardview file. If it will be not successfully, I will request for this here. If, I will have it, I will share it here.

Sorry, if, my phrase is difficult, I could not sleep too much yesterday.