I did the checks and I have 12V to mini board from thermostat in all places. hi fan low fan, cool high cool low. and 12V between B & Y posts. All of the checks on the 9 pin connector shows good with exception of posts #1 & #3. I'm only getting a reading of 6 VAC between them. I tried with the freeze sensor unplugged and also with a jumper wire across the posts and still only have 6 VAC. Is it safe to assume the control board is bad or the compressor relay on the board is bad? Any further things to check for from here or is a new control board needed. also are they available still?
Matt