I have a 25 ft HDMI cable from the TV (a Samsung about 5 years old) to the Direct TV box. I want to add a DVD player to the system sharing the same 25 ft HDMI cable to the TV. I have the direct TV box, then a HDMI cable connected to input 1 of the HDMI switch. I then have DVD player to HDMI cable to input 2 of HDMI switch. I then have my 25 ft HDMI cable connected to my TV. Here is my HDMI Switch.

The HDMI switch lights up but I can't get the TV to work. I'm thinking I either have a bad switch or I need the optional 5 volt power source (which I can't seem to find a part number for) ... Any ideas?

 

With that switch, you're now up to ~31ft (25+6) AND going through a switch.

That's just too much...add the 5V power source. Pretty much any 5V AC adapter with the right polarity at or above the current requirement will work.

 

OK .... getting new switch with power cord plus a couple new shorter HDMI cables .....