You're grandfather must must have been a large powerful faith man to afford an upper caste TV of such large endowment.
My uncle Bashir who owned by rich man in my village who had such TV and first time VCR, but was killed by rival party. The black screen is scaring to me. Does it show the unmarried or unclean woman?
I wish you have the luck to gain knowledge. I am saying the TV is much newer of 1984-5.