Memory Problem C Band Dish setting (1 Viewer)

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Need2learn

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Hello I have a Uniden IRD that I used only to turn my C Band 10 ft Dish. The problem I am having if I go far west or Far East I lose the memory setting to another satellite that has been stored. Most the time it is from 5 or 7 clicks..

Anyone else ever had that problem before? Could it be my IRD not keeping the Dish setting correctly or may my actuator trying to go bad?
 
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Radioguy41

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Aug 7, 2008
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Lehighton, PA
Receivers are designed to read a certain number of pulses from the actuator to maintain position counts. If the actuator is designed to produce a different pulse count that's what happens. When I replaced the actuator on my dish my 4DTV had the same problem. The solution for me was to remove 1 magnet from the actuator. That may, depending on what method of pulse generation your actuator uses, work or not work for you. If it worked ok in the past and is just now starting to act up it sounds like maybe the actuator may be going bad.

Here's an explanation of what causes it on a 4DTV. Yours may or may not be similar.
http://anubis.macross.com/~drlev/6511.1.htm
 
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Need2learn

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Receivers are designed to read a certain number of pulses from the actuator to maintain position counts. If the actuator is designed to produce a different pulse count that's what happens. When I replaced the actuator on my dish my 4DTV had the same problem. The solution for me was to remove 1 magnet from the actuator. That may, depending on what method of pulse generation your actuator uses, work or not work for you. If it worked ok in the past and is just now starting to act up it sounds like maybe the actuator may be going bad.

Here's an explanation of what causes it on a 4DTV. Yours may or may not be similar.
http://anubis.macross.com/~drlev/6511.1.htm
Ok thanks for your info
 

Titanium

AI6US
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May 23, 2013
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Meadow Vista, Northern California
Receivers are designed to read a certain number of pulses from the actuator to maintain position counts. If the actuator is designed to produce a different pulse count that's what happens. When I replaced the actuator on my dish my 4DTV had the same problem. The solution for me was to remove 1 magnet from the actuator. That may, depending on what method of pulse generation your actuator uses, work or not work for you. If it worked ok in the past and is just now starting to act up it sounds like maybe the actuator may be going bad.

Here's an explanation of what causes it on a 4DTV. Yours may or may not be similar.
http://anubis.macross.com/~drlev/6511.1.htm
I wouldn't recommend this as a "fix" for anything other than overcoming the limited pulse count per second of the 4DTV. I am not aware of the Uniden's having the same processing error.

The user saves the count position for each satellite and the IRDs memorize the number of on/off pulse "counts" from a reference "0". Removing a magnet reduces the number of counts per second that the IRD receives and required to process, but the negative effect is that one count on the rotation has a longer movement than the rest of the counts. This will result in one portion of a motor movement not producing a count. Accuracy is reduced in this range.

More likely is the motor brushes have wear or there is common mode in the distribution that is masking the pulse counts in motor "noise". I would place a capacitor across the motor leads to test, before modifying the reed switch triggers.
 
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Need2learn

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Ok I just think it is the actuator going bad.. It is a 36" Venture its been up there a while now...
 
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Need2learn

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Ok update I got up on my garage checked the actuator wires, and tighten all of them, I had a extra Uniden IRD in my attic did a factory default on it, and replaced the old IRD.. So far this one is working perfect.
 
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