Color LaserJet Pro MFP 281cdw No Power/Won't Turn On

[UPbZeppelin]

I typically don't post on forums, but I believe this needs to be shared. 

I recently experienced an issue with my printer's power supply. The printer would not turn on when pushing the power button. This persisted after unplugging the power cord and plugging back in. While connected or disconnected to my computer via USB. Power strip/no power strip... etc. I searched for forums myself and found no solution. I used HP's online virtual support agent after hitting a dead end with getting phone support. The virtual support agent essentially did the same forum search I did, but using directed questions which were, admittedly, easy to answer. However, none of the troubleshooting suggestions it found (which I had already performed) solved my issue. At the end of the process, the virtual agent's "Next Step" suggestion was that buy a new printer. I find this kind of support to be deplorable and suspicious. I assume a certain amount of planned obsolescence with my computer equipment purchases, but for HP to have it's support structure set up in a way that prohibits human phone support and has a bot tell you to buy a new printer to fix your problem... well it's frankly unacceptable. 

I'm writing this question to post a REAL SOLUTION to my problem after troubleshooting it myself. Ensuring the printer was unplugged, I removed the plastic side panel on the right side of the printer (same side as power plug). I was able to access 4 connections to the circuit board on the bottom right side of the printer, housed behind a metal panel. There are two wide connections toward the front (multiple purple wires), another purple wire connection near the middle of the board, and a white/black connection to the right of that. I disconnected then reconnected all 4 of these, ensuring I pushed them in firmly. While the side panel was still off, I connected power to the printer and tried to power it on, making sure to stay well away from the metal housing and circuit board. The printer turned on. I unplugged the printer and reinstalled the plastic side panel. 

My printer is up and working again. No need for a new printer. If you are comfortable with this kind of troubleshooting, I would encourage you to do the same and save yourself several hundred dollars on buying a replacement printer. Ridiculous.