I have a Comcast cable box connected to my Panasonic TV via HDMI cable. When I use the ALL ON button on the Comcast remote, it sequentially turns on my equipment, cable box first, then TV. Recently, the TV comes on with picture, but no sound (up until last week, it had been working perfectly).
When this happens, if I cycle TV power off and back on (without turning the cable box off), the sound returns. Or, if I manually turn the TV on first, and then turn on the cable box, there's no problem.
I have isolated the issue to the TV by doing the following:
Got a new cable box, remote, and HDMI cable from Comcast. Still same problem.
Then I connected to new equipment from Comcast to my other TV (a Sony). No problems.
Panasonic won't offer any help because the TV is out of warranty.
Any help would be appreciated.
When this happens, if I cycle TV power off and back on (without turning the cable box off), the sound returns. Or, if I manually turn the TV on first, and then turn on the cable box, there's no problem.
I have isolated the issue to the TV by doing the following:
Got a new cable box, remote, and HDMI cable from Comcast. Still same problem.
Then I connected to new equipment from Comcast to my other TV (a Sony). No problems.
Panasonic won't offer any help because the TV is out of warranty.
Any help would be appreciated.