AC Blower not running-outside is, but...

[Maturin]

I've read some of the other threads and they have been helpful, but I'm not sure I've got the same issues. The outside unit runs fine, but there's no air being circulated in the house. Before opening the unit in the basement, I turned off the AC and turned the stat from auto to fan...nothing. I turned the stat to heat and auto. The burners ignite, and after waiting the prescribed period, the blower does not go on.

I turned of the heat and AC at the stat, and switched it from auto to fan. Going inside unit/cabinet, when I close the safety "door" or "panel" switch, even though there is a quiet hum, and I push the blower fan with my hand, there doesn't seem to be any power going to it it just spins freely.

I've put my hand on the body of the capacitor and it feels as cold as everything else inside (the outside unit does work and you can feel the cold coming into the blower cabinet. When you close the safety switch, there is a sound of a few clicks (like a solenoid or something), but no action from the fan.

Is there anything else I can try before taking out a 2nd mortgage for a technician to come in? I'd appreciate any suggestions!

[DNT1]

If you have a multimeter sure you can do some checks if you are careful, do you have one and are you able to be careful around high voltage? you seem to know what a capacitor is (you do know they hold a high voltage charge until discharged right?) Lets check to see if we have power to the blower and start backing up until we find power the last little gadget you pass simply replace it simple as pie, if that does not work replace something else not really that many parts in there anyway. If you want to do this yourself you can learn a lot but probably will not save much money since it is real tough for a HO to buy replacement parts at the prices a tech buys them for. What type of multimeter are we using? Lets go at it!

[Maturin]

If you have a multimeter sure you can do some checks if you are careful, do you have one and are you able to be careful around high voltage? you seem to know what a capacitor is (you do know they hold a high voltage charge until discharged right?) Lets check to see if we have power to the blower and start backing up until we find power the last little gadget you pass simply replace it simple as pie, if that does not work replace something else not really that many parts in there anyway. If you want to do this yourself you can learn a lot but probably will not save much money since it is real tough for a HO to buy replacement parts at the prices a tech buys them for. What type of multimeter are we using? Lets go at it!
I'm using a little Micronta...cheap, but functional. I've got a little bit of electrical background, but I'm no pro. I did a few more tests. Here's a list.

On the stat, the mode selector is in the "off" position and the fan switch is in the "on" position. When everything is normal, that should run the fan.

Inside the blower cabinet, holding down the door/panel safety switch, on the control board, only 2 connections give me any power readings on my meter. They are listed on the schematic as "Line-H" (looks like it goes through the door switch) and "XFMR-H" (looks like it goes to a transformer on the outside of the cabinet. Interestingly enough, on the other side of the transformer, the XFMR-H terminal, there's no power. Could the transformer be bad?

On the thermastat block in the cabinet, only the R and G terminals are hot.

There is a block of 4 terminals on the side of the box where the circuit board is mounted. The wires are BK, R, W, and LightBlue. Only the Bk and R terminals are hot. When I put some pressure on that block, however, the hum gets a little louder.

I know enough about capacitors to respect them. I'm not sure of a safe way to test one. Do you set your meter on high voltage and test the 2 terminals.

I can't get to any of the connections in the fan moter itself.

Any help is good...thanks again!

[Maturin]

The transformer on the outside of the cabinet has nothing to do with it. The transformer is the 4 terminal block on the inside, and there is power going to the black terminal. Sorry for the confusion.