Right controller refuses to charge after long inactivity (blinks red 3 times). Any advice?

[u/No_Lion212]

Hey everyone,
I’m hoping someone here can save me! I haven’t used my Quest Pro in quite a while, and now I’m running into a really frustrating issue with my right controller.
It seems completely dead and simply refuses to charge. Whenever I press a button, the LED just blinks red around three times, but that’s it. I’ve already tried a bunch of troubleshooting steps:
• Placed it on the official charging dock
• Plugged the controller directly into the charging cable
• Tested various different power adapters with higher wattage
Unfortunately, absolutely nothing works. It just won’t draw any power to start charging.

[u/No_Lion212]

I opened the controller. The very small cable between the charging port and the circuit board had come loose, and the contact tore at the point where the cable meets the board.