HD channel loss on Newer VIP722 but not on older VIP622.

[ubear7]

I am stumped. I upgraded 2 receivers back on 3/17/12 and all was fine. This past Wednesday 5/30/12 I lost SOME not all HD channels, on Sat 129 and on the new receivers. The older VIP622 (10/2008) gets the channels although it takes a little longer than normal. All receivers were check switched and disconnected and restarted.
Here are the technicals as pictured from the VIP722. Thanks for all the help in advance.

 

[boba]

Call DISH for a service call, weak signal or LNB drift?

 

[oljim]

You can not use a DP34 with a 622 and 722 it will only feed 3 tuners you have 4

 

[garys]

You can not use a DP34 with a 622 and 722 it will only feed 3 tuners you have 4

DP34 switch has four outputs, so it will work. Breakdown the switch name: DP = Dish Pro, 3 = number of inputs, 4 = number of outputs.

 

[TimberWolf]

it might be a bad switch
if you don't want to have a tech out, you could test it by bypassing the switch and run 129 straight to the 722

you could also change the outputs of your switches or swap the rec locations