Sony Bravia tv, power light and remote failing.

My sony Bravia started off with a issue where the tv would turn off by itself and I would noticed 6 red light flashing. I called a tech and he said that the power supply was good and the panels were gone and it's best to replace the tv. Fast forward a day later, I turned the TV on using the power button on the tv and it came back to life. However I don't see the green power light anymore, even the remote is not responding. I now have to manually change channels or adjust volume directly on the tv panel. What has caused the power light and remote failure???

Also how do I get into the settings on the tv without the remote? Please help.