[John V.]

I'll also throw something out there that will sound bizarre (at least to me).

I have a HP LaserJet P2015 printer. This model has a known problem with the formatter circuit board (whatever that is supposed to do).

Printer was less than 2 years old when it started acting up, out of warranty. HP offered to repair for a price, but it hardly seemed worth it.

I went on-line and learned of the common problem.

Was blamed on crappy solder joints on the (wait for it) Chinese produced circuit board.

The solution was to pull the board, then bake it in the oven at 350 deg for 8 minutes.

I did it and the printer worked like a champ for about a year.

I have now rebaked it 2-3 times over the course of the past 3 years, last time maybe 2 months ago. Each time, the printer has worked perfectly when I put it back together.

Supposedly the temp is just warm enough to reflow the solder joints on the board but not so hot as to cook any of the components.

I set the board in a glass pie dish, solder joints down, board components up. I make legs out of some small screws to stand the board off the dish.

I'm told the oven bake process fixes lots of misbehaving circuit boards. If your problem is with the board, maybe baking it will help. Try at your own risk. You might want to google baking circuit boards first to see what the web has to say.

Good luck.