A new one on me

[Radioguy41]

Today my motorized (STAB 90/USALS) 90cm FTA dish stopped moving. I tried everything with the receiver and no go. I tested voltages, continuity, and cables and all tested OK. So, just for chuckles I disconnected the cable from the LNB and there she went! Connected it back and the dish won't move. Disconnect and she moves. Replacing the LNB fixed it. That's a new one on me, a defective LNB disabling the dish motor.

 

[FTA4PA]

Today my motorized (STAB 90/USALS) 90cm FTA dish stopped moving. I tried everything with the receiver and no go. I tested voltages, continuity, and cables and all tested OK. So, just for chuckles I disconnected the cable from the LNB and there she went! Connected it back and the dish won't move. Disconnect and she moves. Replacing the LNB fixed it. That's a new one on me, a defective LNB disabling the dish motor.

Sounds like it was causing a short. Any signs of water infiltration in the lnb?

 

[primestar31]

You were probably trying to move it while tuned to a vertical 13 volt channel, and that lnb was drawing a little bit too much current.

I wonder what would have happened if you had tried a horizontal 18 volt channel?

 

[Radioguy41]

As I said, I tried everything from the receiver end (that would include changing channels) to no avail.

FTA4PA - no sign of water infiltration plus I have a rain shield mounted over top and it hasn't rained in almost two weeks.

 

[Cham]

I've never had an LNB(f) fail shorted, good to know it can happen!