HD TV and cable box

We purchases a new 32" LG television from best buy and brought it home to hook it up to the motorola dvr cable box provided to us by the cable company.  We're pretty low tech so it seems simple, the cable into the dvr, the hd cable from the dvr into the back of the new tv and both the tv and the cable box plugged into a surge protector (in other words, the tv is NOT plugged into the dvr box).  Things work well enough once you have everything on, but when the tv gets turned off, the dvr automatically powers down....all the way down....to a black screen.  Then, when you turn the tv on and wait a half minute or so, the cable box powers up, then goes black again, the the time comes on but there is no power.  At this point, you have to turn the power on the cable box.  After that you have to use the tv remote to switch the input from hd port 1 ( where the cable is plugged in) to hd port 2 (where there is no connection) then back to hd port 1 to get the tv to recognize the signal from the dvr.
I trouble shot some with the cable company this am and have an appointment for them to come check it out because they are stumped but I thought I would put it out there and see if anyone had any additional trouble shooting measures to try before the "cable guy" comes.

Don't be SO quick to knock the "low quality/Monster Cable" myth. Although it is not the case here, a low quality cable are more prone to failure. But still dang few and far between. I would rather buy 20 $5 dollar HDMI cables than 1 Monster Cable. But with digital it either works or it doesn't.
It COULD be a HDMI handshake error. But my first question is, do you have one remote programmed to control both your TV and DVR? For examply, my DirecTV box and TV in the guest room (basic setup) remote, is setup to send two separate IR commands when I hit the off button. One command to turn off the DVR and one to turn off the TV. If your setup is NOT like this then it sounds like a HDMI-CEC issue.
I would look into your DVR and/or TV settings and look for options called "HDMI Control" or similar and try turning it all off, and see if the problem still happens.

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