My 2010 corolla radio Display suddenly turns off, everything works ok except the display

#1
Hello there, I am in Mexico City and my Corolla 2010 with a single cd radio suddenly the display turned off, radio and cd sounds OK but the display does not work, lately we have had a very hot weather (104 Farenheit degrees) and I had to left the car parked at the sun, could it be the cause? Thank You,
My car is Canadian made, 1.8 liter, 4 speed automatic, XLE version, 34,000 Kms. First and only owner.
 
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