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Old 07-23-2015, 10:44 AM   #1
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Problem replacing Wineguard Wallplate in T1950

Hi All, I am hoping someone can give me some HEEEELLLPPP!!! I am trying to upgrade the Wineguard wallplate in my T1950 to a Wineguard model with an antenna booster. The guys at the RV shop tell me this should be easy....... yeah, right. My current wallplate is original one installed in the rig and has a 12 volt outlet and an on/off button for the antenna. I am currently in a campground with no cable. I have the wallplate set to "On" for the antenna (green light is lit). I do get 5 stations on the TV -- and yes, rotating the antenna DOES make a difference in the reception. SOOOO....

I remove the existing wallplate and find that there are 2 coax cables connected on the back -- one attached to the "cable" and one attached to "TV 2" on the plate. There is nothing attached to "Antenna". I am totally confused. How can I be receiving channels over the antenna when there is no coax attached to that connection????? And why do I have a coax attached to "TV 2" when -- to the best of my knowledge -- there is no place to connect a 2nd TV in a Sunline T1950. Can anyone tell me where this coax is terminating?

I called the people at Wineguard -- they were of no help. Can anyone here shed some light on my problem?? I am hoping not to have to call in a mobile RV Tech.

Thank you much in advance,
Jazzy
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Old 07-23-2015, 02:48 PM   #2
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"Antenna" wire on "TV2" and backfeeding???
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Old 07-23-2015, 07:00 PM   #3
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The other connection is for a second TV it does not matter what connection is used they both are the same. The TV amp is inside of the antenna on the roof not the switch plate if you get any stations the amp is working with out you'll get nothing.
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Old 07-23-2015, 07:34 PM   #4
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OK, MACK C-85, I was thinking the same thing -- that the TV 2 termination is running to the antenna. I was going to try to connect this to the "antenna" termination on the new unit but was afraid to short out something. mainah, Wineguard is telling me that without a coax connected to the antenna termination at the plate I will have no reception -- but I do...... They say that there is a third coax that must be buried in the wall somewhere. There is no second TV in a T1950 so, again, I have no idea where the termination point of that coax connection is. I agree the amp in the antenna is working -- I just don't know HOW it is working. My thought was to take the new plate -- take the coax connected to TV2 in the old unit and connect it to the Antenna in the new unit -- and pray that nothing blows up. Thoughts?
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Old 07-23-2015, 07:47 PM   #5
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As mainah said, it looks like what you have is working the way it should. There is an amp in the antenna. Pushing the button sends 12 volts through the coax to the amp in the antenna and turns on the green light. The button also switches between "cable" input (when it isn't pressed) and "antenna" input (when it is pushed).
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Old 07-23-2015, 07:55 PM   #6
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Here is a link to the Winegard manual in PDF format. Page 4 has a picture of the connections on the wall plate. http://www.winegard.com/kbase/uploads/2452013.pdf
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Old 07-23-2015, 07:56 PM   #7
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Yes, Gene, the original unit is working correctly. How it is working, I have no idea. It certainly was not set up by Sunline the way the Wineguard instructions for that unit indicate it should be. I added a batwing to the antenna this Spring and am in the process of upgrading the wall plate to a new Wineguard unit that will seek out the best signal strength and provide additional boost to the antenna (beyond the boost already there). The million dollar question -- how does pressing the button and getting a green light send anything to the antenna when there is no coax connected to that connector in the plate???
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Old 07-23-2015, 08:01 PM   #8
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Gene -- yes, I see the illustration on page 4. Same as in the instruction manual I dug out from the original paperwork. I have no 3rd coax going to the antenna downlead at the plate. I have only 2 coax -- one to the "cable" one to the "TV 2". Wineguard tells me I am missing a coax -- yet I get reception. They tell me this is impossible.
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Old 07-24-2015, 05:48 AM   #9
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Well they are wrong there are two outputs TV1 and TV2 there probably is no second wire usually only the bigger campers had a second TV wire for the bed room. The TV 1 and 2 are connected to the same place on the board inside of the switch it does not matter what connection is used they are both the same and the TV does not know the difference. If you had two TV's both would be connected and you would have 3 coax wires. The key wire is the "antenna" wire that needs to be in the right place beyond that it does not matter.
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Old 07-24-2015, 06:25 AM   #10
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I think you may have a replacement switch that has a cable TV input they only have a TV2 connection no TV1 connection. I all so don't believe that it has an amp in the switch because adding an amp to an existing amp usual creates problems. If it does have an amp it is only for the cable hook up. Some camp grounds have cable hook ups the switch turn off the antenna and turns on the cable input but that was not the case with the old switch. Maybe if you post a number of the switch you have it might help. The original will have 2 TV outputs and what they do with the cable ready switch is use a splitter for the second TV. My 1990 have a cable connection but in order to use it I have to remove the cable from the switch and connect it to the cable connection on the wall.
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Old 07-24-2015, 10:03 AM   #11
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I think I am not explaining what the situation is very well....... Here are the old wall plate connections:


1. The Coax from my TV set is connected to connector on the front of the wall plate (TV1).
2. There is a coax connected to the "cable" connection on the back of the wallplate. This coax runs thru the walls of the camper and terminates at the park cable hookup on the outside of the camper.
3. There is a coax connected to the "set 2" connection on the back of the wallplate. This coax runs thru the walls of the camper and terminates at an unknown location. There is no place to have a second TV in a T-1950.
4. There is NOTHING connected to the "antenna" connection on the back of the wallplate.


So -- here is what I am trying to figure out.


1. What is the termination point of the coax running up through the walls that is currently connected to the "Set 2" connection on the back of the wallplate.
2. How is the antenna working when there is no coax going from it and being downfed to the "antenna" connection on the back of the wallplate.


I hope this describes my problem a little more clearly. I do appreciate the help.
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Old 07-24-2015, 10:05 AM   #12
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Oh, and just to clarify -- I have used both park cable and the antenna depending on location. All I had to do was push the on/off button on the front of the wallplate depending on which service I wanted to use. I never had to take off the wallplate to change coax connections. My rig is a 2006.
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Old 07-24-2015, 11:58 AM   #13
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Is it possible that your "tv2" is connected to the antenna?

Look at the area of the roof where the antenna is and then the direction the "tv2" cable is heading out the back end of the plate/box. Is it in the direction of the antenna?
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Old 07-24-2015, 06:15 PM   #14
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Ok if you have a picture it is correctly connected that much I can tell you there has to be a 12 volt feed to the antenna for it to work at all. The wires disappear in the wall so you really have no ideal as to what they are connected to one goes to the antenna guaranteed. Now with out taking mine apart or finding a wiring diagram my only guess the 12 volt antenna feed is common to all the TV connections so it may not matter if the antenna is connected to the TV port but what I can tell you the only way it is working is the antenna cable is hooked up. Now depending how much you really want to pursue this you will need a volt meter and a way up to your antenna. You will need to disconnect the lead at the antenna test the small wire in the center of the connector and the metal screw in part with a volt meter with the switch on it will be in the 12 volt DC range this I know because the TV has a picture next disconnect the leads inside until you lose the 12 volts that will be your antenna coax cable.
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