OTA/DirectTV with diplexer installation-help!

[jdub]

I have just installed a Channel Master antenna with channel master 0065DSB pre-amp which is connected to, and draws power from, the direct tv dish through a channel master 4032IFD diplexer to combine SAT2/UHF. I use a DirectTV DVR so there are two SAT lines (1,2) coming in to my Direct TV DVR and a third line that goes to another room.

At the Direct TV DVR, I have another diplexer (same model) to split the incoming SAT1 and UHF/SAT2 signal into SAT1, SAT2 and UHF. SAT1 and SAT2 go to the DVR, while UHF goes to the LG 3510 HDTV tuner.

With the UHF line dis-connected from the LG tuner, I have a clean signal from both SAT1 and SAT2. When the UHF line is connected, my SAT2 line drops out completely. HELP!

Any guidance on this would be truly appreciated!

 

[Cougar]

Does the UHF connection work? It sounds like you may have the connections for the UHF input at the dish reversed possibly, or one of the diplexers is bad.

 

[jdub]

Diplexer/Tuner problem.

Couger,

Thanks for the note. I discovered that the 12V DC from the Diplexer was grounded when I connected the line to the LG tuner effectively eliminating any signal coming from the SAT2 line. I installed a DC "block" filter between the two and resolved the problem.

Thanks again.

John

 

[Cougar]

Your welcome John. Thanks for the feedback. It's good to know what fixed this problem.