There are several things that can cause this. Please tell me a little more about your situation so I know where to go with my answer.
What kind of information are you looking for? Trying to fix this yourself or get a good idea of what's wrong and what it will cost?
If you are trying to repair this yourself, what kind of electronic repair experience do you have, do you know how to use a meter and solder?
Please let me know!
Unfortunately I do not believe you need new software or a reset of any kind, there are a couple of things that can cause this but they are internal failures and will require an internal repair.
If you know how to use a meter I can assist you in troubleshooting the problem and completing the repair, otherwise at this point you will need a technician.
I do apologize for the delay, we have a very high volume right now, I will do my best to respond to you ASAP. I will be around for most of this evening so if you are available we can work through your problem.
So the set started working but now is back in the loop again? Do you know how to use a meter?
This is a very common problem with your tv, what has happened is the power supply has failed, more specifically there are a few caps in the power supply that have most likely failed. The unit will require component replacement to get it working again. A repairman will be required for this repair, you can expect the bill to be around $300.
There is a very slight chance that the problem in on the main board, but I have repaired 100's of power supplies and only had one of them have a bad main board, so I do believe you have the power supply problem as I have mentioned. However if you do have a bad main board, then you could expect the bill to be around $500.
I am sorry that I don't have a magic button or a quick fix for you on this one, but component replacement will be required.
Please never accept an answer until you are 100% satisfied and feel you can leave positive feedback. If you would like any additional information or have more questions please don't hesitate to ask!
If I have answered your questions and met your needs then please press the green "accept" button. Otherwise please feel free to ask anything else to get your problem resolved. Positive feedback is always appreciated! Thank you,Tim Nolan