OK, this is going to be a bit long, but after this, if you cannot control TV2 and the blue light, call dish and RA the 522. Kick, scream and complain that your installer was mentally challenged.
If you have time to kill and patience, you can set it up yourself. It is fairly easy and the following steps should fix your problem in 30 minutes or less.
Make sure that you have your cable from the back of the 522 [CH 21-69 Out] in the shaded TV2 to your Second TV.
[Modulator Setup] - This picks a channel for the 522 TV2 out to broadcast to.
MENU - 6 - 1 - 5
On the right side, choose a channel in your area that is not in use. I use 23. You can pick a channel from 21 to 69 in AIR mode or 73 to 125 in CABLE MODE. Tune your TV2 to the same channel. If your TV is set up for CABLE, or AIR, make sure that you choose the same on your 522 AND your TV2.
Turn on your TV2. You should have a picture if the Blue light is on.
If no picture yet, and for testing purposes, switch TV1 and TV2 outputs on the back of the 522, so you dont have to run from room to room to check the video.
Make sure you have a green, blue and yellow light on.
Tune TV1 to the channel you chose earlier (like mine at 23). IF you now have picture on your TV1, check TV2 for a picture on Channel 3 or 4.
If no picture on your second TV you have a bad cable run to TV2. Replace it.
Once you have a picure on both TV's the next thing is to correctly connect the cables back to the right connections and channels and verify you still have a picture on both TV's.
[REMOTE 2 SETUP]
Bring remote 2 with you and stand in front of the 522 with TV1 on.
MENU - 6 - 1 - 3 using remote 1 (or System info button on the front of the 522)
Set your Secondary Remote address to a different number other than 1(assuming it is set to the default of 1 now). I set mine to 16. That way it doesn't interfere with my other UHF remote.
This will verify that your remote is talking to the 522 and is working.
First make sure the little wire antenna is sticking up from the back of the 522. Without it, it can't hear your TV2 remote.
Press the SAT button on Remote 2 until all the mode button light up, then let go.
Enter a number between 1 and 16 using the number pad. Choose anything but whatever is currently displayed there.
Press # (the SAT button on the remote will flash 3 times if you did it right)
Press RECORD. (below yellow pause button)
You should see the address change from 1 to whatever you entered on the Syetem Info screen. If not, try again just to make sure. If it doesn't do anything, you may have a bad TV2 Remote.
I have seen some bad UHF Pro remotes. Sometimes pulling the battery cover and yanking out the blue key and putting it back in is enough to fix it. Sometimes not. (Blue side up, not green)
If it did change the number to the one you entered, you are home free and done. You should now be able to change channels and turn off the blue light indicating that tuner 2 is shut off.
That covers all of the possible things I can think of.