Wouldn’t we want to do more test before we say the board is bad.
What other tests do you think would be appropriate for this specific circuit configuration?
We can’t say the ignitors are bad just because the voltage check was negative.
You’re absolutely correct! If the ignitors (load of interest) are not getting their specified operating voltage, the ignitors themselves are ruled out as cause of the no heat problem. The cause for the missing operating voltage must be troubleshot and identified. The ignitors cannot cause the operating voltage to go missing. Something else is the cause for this. What else could it be?