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THERE IS, aside from having the set taken to a shop, One other thing you can try---
NOT THE RESET BUTTON ON THE FRONT OF THE SET!
If the original Mitsubishi remote works on the set---this set has a hidden menu---it also in that menu has a HARD RESET---puts set back to the condition is was when new in the box--will come back on on channel 3 in the air band and any labels you placed on any of the video inputs (ie--named a input DVD etc) will be gone.
If you have OSD but no video either you have some problem with a single voltage coming out of the power supply(shop repair) or if you had a power outage or the power cord was removed with the set on---the hard reset may fix it---nothing to lose--set is not usable now---
Let me know if you want to try the reset and I will tell you how----
Although your picture is perfect, I would think the fine tuning is slightly off. This can also be to do with the cable box frequency setting. Call out the cable people & get them to check the box & the setting up to the TV.
I assume this is an LCD tv that you have? I would think a fault has developed on your inverter board with one of the components having burnt out & shutting off the drive to the backlights hence the smell & lines on the picture. It would be advisible to take it to a repair centre to have it repaired to check the burning issue as a matter of safety
Try a hard restart, which simply means unplugging the power cord of the TV, and replugging it after 4 hours have passed. This technique reprograms the electronics, to a certain extent. If the picture does not return, then your TV has a more serious problem, that requires the attention of a repairman.