Hi, I have replaced entire DC power board in my G751jy and it was working OK but for about 1 year. Definitely much shorter time then expected. And it was original ASUS spare part. I still have the old part too.
However I have the advice for you to rescue the port if you have some manual skills (without any soldering and replacing required):
The problem are connections inside the port itself. They have a design flaw. If you can see inside the port itself with the magnifying glass and strong light... There are 6 small metal plates around the inner circle (3 at the left side and 3 at the right side) - they suppose to contact external surface of the power plug... And there are 2 more metal plates at top and bottom sides of the middle round plastic (the one with the pin hole) - they suppose to contact the internal surface of the plug, plus the pin in the hole. All 8 metal plugs should be resilient. And they are in a brand new port.
The problem is, that heavy CPU/GPU demanding games require high power DC in... But over time the connections between the metal plates and the plug are simply loosing up little bit but very persistently. This produces the additional heat at the connections / metal plates.
This additional heat impacts all the metal plates inside the plug... They just start to be more flat faster and faster due to hotter and hotter temps... They are no more resilient so they do not contact well. Some of them are even pushed inside their holes and do not contact the plug at all. All these makes the situation that port CAN'T transfer enough power to the main board... It's not enough that only few metal plates are working ok.
So what can you do?
Just take some long and strong needle and try to bend out the metal plates again in their correct positions. They should stick out little bit "above" the diameter of the port surfaces. And I mean ALL those 6 + 2 plates.
If after this procedure you are NOT able to insert the plug into the port - DO NOT push the plug with any stronger force or you will PUSH metal plates inside the holes and it will be difficult to put them back in correct positions again. This difficulty only means that you have bent the plates little bit too much... just make them little bit more flat again and try again to insert the plug. It should insert now without any major force but now it should connect OK. Good luck and be very careful with this job.
I have done this 3 days ago with my G751JY.
See the picture below -this is my old spare part board where I was practicing:
However I have the advice for you to rescue the port if you have some manual skills (without any soldering and replacing required):
The problem are connections inside the port itself. They have a design flaw. If you can see inside the port itself with the magnifying glass and strong light... There are 6 small metal plates around the inner circle (3 at the left side and 3 at the right side) - they suppose to contact external surface of the power plug... And there are 2 more metal plates at top and bottom sides of the middle round plastic (the one with the pin hole) - they suppose to contact the internal surface of the plug, plus the pin in the hole. All 8 metal plugs should be resilient. And they are in a brand new port.
The problem is, that heavy CPU/GPU demanding games require high power DC in... But over time the connections between the metal plates and the plug are simply loosing up little bit but very persistently. This produces the additional heat at the connections / metal plates.
This additional heat impacts all the metal plates inside the plug... They just start to be more flat faster and faster due to hotter and hotter temps... They are no more resilient so they do not contact well. Some of them are even pushed inside their holes and do not contact the plug at all. All these makes the situation that port CAN'T transfer enough power to the main board... It's not enough that only few metal plates are working ok.
So what can you do?
Just take some long and strong needle and try to bend out the metal plates again in their correct positions. They should stick out little bit "above" the diameter of the port surfaces. And I mean ALL those 6 + 2 plates.
If after this procedure you are NOT able to insert the plug into the port - DO NOT push the plug with any stronger force or you will PUSH metal plates inside the holes and it will be difficult to put them back in correct positions again. This difficulty only means that you have bent the plates little bit too much... just make them little bit more flat again and try again to insert the plug. It should insert now without any major force but now it should connect OK. Good luck and be very careful with this job.
I have done this 3 days ago with my G751JY.
See the picture below -this is my old spare part board where I was practicing:
Important update - 2 more metal plates inside and they are quite difficult to bend, but possible. If they pop-up from holdings, still can be pushed back.
Also there are 2 miro metal plates inside the pin hole. But it is completely impossible to me to bend them (if needed). Those pin plates should be left untouched I think.
Also there are 2 miro metal plates inside the pin hole. But it is completely impossible to me to bend them (if needed). Those pin plates should be left untouched I think.
