Quote Originally Posted by bryjcom View Post
They do go bad.. Just not as often as people (or technicians) think. Its funny to hear from the factory that most of the "bad" boards they get back for warranty aren't bad at all.

The other day I thought I had a board go bad on a commercial water heater. Called tech support and he said "Yup.... sounds like a bad board to me. Board costs $458" . I hang up with him, and I'm about to tell the customer when I find that the fuse had fallen out of the board and it just needed to be put back in.
Well, in my case it was the board:
Way too much erratic behaviour, so I got me a board (Do-It-Yourself Plumbing and Heating, $109) and swapped it out.
Came right back on, has been running like a champ ever since.
The annoying part is that this is the 3rd board I change in about 9 years...
Never saw a burn, just a "darker color" around some of the components...
I wonder wether this is just a crappy brand (Goodman) or there is somenthing else causing the boards to fail.
I changed it last time maybe 4 years ago, and the darker color was around different components.
I am going to save this last failed board and compare it with the next.