The remote control of my TV set is failing and I probably have to buy a new one soon. I changed battery, including from other device that is working, and there was no improvement.
But it is interesting that sometimes it works properly, and sometimes doesn't work at all.
It seems related to sunny days (works) and rainy days (not work), while the correlation is not 100%;
My question is about what I tried several times with good results when it is not working: put it (after removing batteries) inside a turned off furnace, still with a residual heat and a temperature of 35 - 45 C I guess. Until now it always starts to work.