Both of my converter boxes are rated at about 7 watts. Nobody likes extra electronic stuff and wires everywhere, but if reliability is a concern, you may be forced into going with 115 VAC and the power inverter.those convertor boxes draw almost nothing like 29 wattss??
You can pick up a 12 volt to 120 vac 75 watt inverter now for under 10 bucks.
If you aren't afraid to open it up, do so, and to a computer mod-shop or parts store (or order online) a Northbridge/Southbridge heatsink. They're about 1.25" square, and attach using thermally conductive adhesive. That should cool the decoder chip plenty.Any other suggestions folks?
There is a merchant group testing converter boxes and so far the Artec T3A (which operates off 12VDC) has had three failures. It appears it doesn't like heat. After 36-48 of always-on, the incoming signal starts to get degreated.
Thanks for the suggestion.