Rare RTX 5090 LIGHTNING Z repaired after failed mod, owner advised to stop ‘practicing’ on it

MSI RTX 5090 LIGHTNING Z finally repaired after community helps identify missing trace

In our previous coverage , the MSI RTX 5090 LIGHTNING Z owner claimed he was practicing soldering on a very expensive graphics card. That explanation was already hard to process, because most people use scrap boards for practice, not a limited GPU that costs more than many complete PCs.

The owner appears to have attempted a board mod by adding a tiny 0402 component near the GPU area. The goal was probably to unlock more power for the card, rather than to pass day one of soldering school on a $5,000 PCB.

Source: Northridgefix

The problem was that this was not a normal retail graphics card with plenty of donor boards and public documentation. NorthridgeFix had no boardview or schematic. The first high-resolution PCB image helped, but it did not fully solve the problem. Then more viewers joined in, sending comments, emails and photos of other MSI RTX 5090 LIGHTNING Z boards.

Missing path found

One of those photos was the missing piece. After comparing the area again, NorthridgeFix found that a removed trace had to be restored. That line connected to the BIOS area, and once it was reintroduced, the card finally produced an image . Sometimes the fix is not a new GPU core, a donor board or a factory schematic. Sometimes it is one wire and a community that owns microscopes for fun.

Source: Northridgefix

The card is now working, but the job is not fully finished. NorthridgeFix still needs the original housing and cooler from the owner before the card can be reassembled and stress tested. The repair shop also had a simple message for the owner: once this card is closed again, leave it closed.

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NorthridgeFix : We Finally Fixed the MSI 5090 Lightning Z GPU. 20,460 views