HP M402 Printer - Error 50.2 Fuser - Repair Demo

The HP M402dn/dne fuser problem is with an induction coil on the motherboard of the printer, the leads weaken over time and eventually break.
When you remove the left side panel (facing the printer front), the larger of the 2 boards is where you will find the coil (towards the rear of the printer, pictures attached, circled in blue).
Along with this repair demonstration video, here are steps for repair:
1. Unplug printer
2. Remove paper tray
3. Remove screw (exposed when you remove the tray)
4. Remove left side panel, apply firm pressure from the front of the printer to remove and downward at the back
5. Remove fan and fan bracket
6. Unplug 2 sets of purple wires from the board and 1 blue/yellow from secondary board and the yellow power connector (highlighted on picture)
7. Remove 4 screws from board (circled in white)
8. Remove 4 screws from rear of printer (in the vicinity of the power plug)
9. Lift up the board from the bottom and disengage tab by the plug (highlighted in red)
10. De-solder the broken leads from the board and clean out any residual solder
11. It may be necessary to unwind the broken lead of the coil to make it long enough to put through the board, if so, you have to scrape the wire to expose metal before soldering. Coil wire is coated with epoxy.
12. Clean the solder from the leads of the coil so they will fit into the board
13. Re-fit the coil to the board and set in place with hot glue hopefully to lessen the chance of this happening again
14. Solder the leads to the board
15. Reassemble by following these steps in reverse from step 9. I found it easier to loosen the top of the printer to re-install the side panel especially at the rear, just pull up firmly at the front and work around the left side, attach the side panel and then attach the top
H/T to Curtis Childs and his supervisor, Paul Maddalena, of NY-Penn for producing this.
For questions/additional information:
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Initial publication: 07/10/2020
For internal use only: American Red Cross - Biomedical Services
Washington, D.C. 20006