No MagSafe Light / Not Charging after DC-In Board Replacement

Background

The pins on both my MacBook Pro’s adapter and DC-In board where melted/deformed with black stain around them. This built-up over time and gradually. As a result, It wasn’t connecting properly and I had difficulty finding a sweet spot to make it start charging. The power adapter and the connector would get extremely hot.

To fix the above issue, I changed both the power adapter (genuine Apple-branded 85W adapter) and DC-In board. DC-In board is purchased from iFixit based on the recommended part in their repair guide for my MacBook Pro. P/N 923-0096

Side Notes

This is the second time I had to do this. The first time it was about 1.5 years ago and it worked flawlessly (I had to reset SMC to make MagSafe connector light turn on).

The reasons for this repeated issue is my work environment: There are microscopic steel particle dust in my workplace as we operate sheet metal laser cutting equipment.

Current Issue

MagSafe Light is off. Battery Menu indicates:

Battery is not charging.

Power Source: Power Adapter

System Information gives me normal reading on the battery itself and everything else, except, here is what I have for AC charger information:

Connected: Yes

ID: 0x0000

Revision: 0x0000

Family: 0x0000

Serial Number: 0x00000000

Charging: No

Things I Have Already Tried

1. I made sure the power adapter is good: It charges other laptops, and a working charger of another laptop shows exactly the same symptoms.
2. I did SMC reset multiple times with and without power adapter attached.
3. I reviewed the installation process and made sure all connectors are properly in place and the DC-in board is sitting properly and the pins are at the correct location.

Additional Thoughts / Questions

Could it be that iFixit replacement part is the wrong part or defective?

Could it need a different part due to a repair they performed on my MacBook Pro in 2014?

The background story on this: My MacBook broke down under warranty and they replaced the motherboard. The first time I changed the DC board I realized an issue with the replacement motherboard: One screw in the middle does not line up with the hole in my MacBook Pro and they have left it out. (Repair was done by Apple Store) I don’t know if this screw hole misalignment indicates that they have put an older or later revision of the motherboard that works with a different DC-In board. The first replacement DC-In board was purchased from e-Bay for a much cheaper price than iFixit, but claimed to be compatible with a broader range model years and it was working for over a year without any problems.