I honestly think the 60/50 Hz argument does not apply to modern digital electronics anymore.
A couple of decades ago, perhaps the mains frequency was used to run some analog circuits for timing / oscillators. Now, I think the first thing that happens in almost any electronic gear is that the AC voltage is stepped down to a pure DC current. Exceptions I can theoretically think of might be radios / clocks and perhaps some amplifiers. But even that I strongly doubt.
I good repair guy might even be able to take the power unit out of your TV and replace with a local / universal one.
(Usual disclaimers apply .. its been close to 30 years since I've looked at circuitry. Fry your gear at your own risk..)