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Topic: TV Antenna Diagnostics (Read 1067 times) previous topic - next topic

Re: TV Antenna Diagnostics

Reply #25 –
Oh Peter, piece of cake! 😜

It is possible that the power booster is not functioning.  Is there voltage to the booster where the cable connects?  If ll,of thatbis OK then the cable (in mine anyway) runs across the front above the windshield and into the ceiling cavity above the cabinet.  There is a round cover with a couple screws.  Take that off and you can see where the cable connects to a fitting that goes through the roof.  On the other side of the roof the cable that comes from the antenna connects to it..  It is possible that this fitting is faulty or dirty.

Yours might be different but probably not.

Roger
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: TV Antenna Diagnostics

Reply #26 –
Peter,

Did you test the antenna connector at the Winegard box to be sure it is putting out 12 volt?  If it is, then that would verify your diagnosis of a bad cable or bad connector somewhere between the box and the antenna.  I suspect pulling a new cable will be a chore...but that's only a guess.

Edit:  Roger beat me to the draw.  :sleepy:  Snooze - you lose.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Surely, no age has been more fraught with insecurity than our own present time."

Re: TV Antenna Diagnostics

Reply #27 –
This is the Winegard VS-1000 box that does the video switching in our coach.  It is located (like Brett said) under the floor in the aft-most closet.  I think this is where the 12V power is inserted into the antenna, because I have not found any other device between this box and the Jack antenna head we use.  I had to stop for dinner, but if this fact is not verified by another member, I will go out after we eat and check the "ANTENNA IN" connector with my multimeter.

I tried (earlier today ) finding a wiring diagram for this device, but no luck either in my coach paperwork collection, or online.  It must be too old.  :(
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Surely, no age has been more fraught with insecurity than our own present time."

Re: TV Antenna Diagnostics

Reply #28 –
Chuck,
My setup may be different as it is a Unicoach.  I'll have to check if there is such a box anywhere in the coach.  When I did the TV & VCR/DVD upgrade, all the cables from the power supply went to a control box right over the DVD/VCR.

The power switch is seen in the picture with the TV removed.
Peter & Beth Martin
No Forrest? What have you done?
MC# 15890 until Dec 2016; FMCA #F329677
Cincinnati, OH

Re: TV Antenna Diagnostics

Reply #29 –
Peter,

I had the same switch box that you have.  It quit working and replacements are unavailable.  If you are reasonably close to a TV tower you should be able to test the TV with just a length of ordinary wire stuck in the center of the antenna cable jack on the back of the TV.  Digital signals give a better result than the old analog that way.  Replacing the cable should not be too difficult, I think it is usually under some of the overhead carpet in the cabinet near the antenna.
Jerry Whiteaker former owner 96 U270  36' #4831 Austin,TX-Owner Mods LCD TV w/front cabinet rebuild - LCD TV bedroom - Dual Central AC, either can cool coach w 30 amp - Skylights at roof AC openings - Drop ceiling for ducting of AC - Shower skylight white gelcoat/wood/epoxy frame - Air Springs/Shocks replaced - 2014 CRV - 8K Home Solar - Chevy Volt

Re: TV Antenna Diagnostics

Reply #30 –
Just went thru this on my 1995 U300. Trouble traced ( finally ) to poor connections on the short coaxial cable from the antenna to the roof bulkhead connection.
Jon Harris
1995 U300 Unihome
Cat 3176
The selected media item is not currently available.

Re: TV Antenna Diagnostics

Reply #31 –
Yup, what Jon said.
Nitehawk,  Demolition Lady, & our NEW master, Zippy the speeding BB cat.
1989 Grand Villa 36' ORED
Oshkosh chassis, 8.2 DD V8
2006 Saturn Vue AWD

Re: TV Antenna Diagnostics

Reply #32 –
Quote from: Jon H –
Just went thru this on my 1995 U300. Trouble traced ( finally ) to poor connections on the short coaxial cable from the antenna to the roof bulkhead connection.
Jon,
Did you just clean these connections at the roof? Or, did you replace the F connectors?
Peter & Beth Martin
No Forrest? What have you done?
MC# 15890 until Dec 2016; FMCA #F329677
Cincinnati, OH
 

Re: TV Antenna Diagnostics

Reply #33 –
Peter
I went through the same thing and found the problem was either the inside cable from the through the roof plate or the plate itself.  I found this out by running a new coax from the antenna head directly to the power booster and tv worked fine.  Rather than replacing the through the roof plate I decided to use this new cable, I bored a hole through the roof, ran it to the booster- all is well.  Then I used Dicor to seal up the hole around the cable.  This seemed easier than replacing the through the roof plate, at least for me.

Hope you get it working.

 ^.^d
Ted & Karen
2001 U270 36' - sold after 12 years full timing