HP LaserJet P2015dn repair - Baking the Formatter board

May 2024 update: Printer started behaving the same way as it did in March 2021, so we did board bake #3. I also replaced the toner, as it finally got to the point where the print was still faded despite giving the toner a good shake. I got over 4300 prints on the 53A toner, which had an install date of September 2016. I also examined the side panel and think it may actually be easier to unclip from the back of the unit rather than the front.

March 2021 update: After 5 years of home use, I had to bake the board again. A few months ago the printer developed a strange problem - when it sat idle for a day while powered on, the status lights would say it was online, but when I tried printing to it my computers would report it being offline. Power cycling the printer would fix it, but on some boot attempts I'd get this error. A couple weeks ago, it wouldn't boot past this error so I rewatched my video (thanks, past me!) and baked the board again- this time at 400F for 8 minutes. The printer has been working perfectly for over a week without the need to reboot it on a daily basis! Given my most recent experience of the problem progressing over time, and the fact this problem seems so widespread with this model, I have a suspicion there is a design defect where a component on the board is running hot enough to melt itself away from the board.

Original Description: I found a lot of information suggesting how to do this, but very little information with the exact details! The error condition for this printer will be a paper jam light or sometimes a toner out light when those problems don't actually exist. Before doing this I checked all of the paper sensors to make sure there were no bits of paper stuck in them. Please pardon my poor video taking skills; I'm better at fixing things than taking video! I honestly didn't think this fix would work, but I had nothing to lose and I was encouraged by dozens of people reporting this repair worked and saved them about $100 on a replacement board.