TCL 75C815 75 inch QLED 4K TeleVision
it is not a computer so moved you to TV forum.
the parts are at the makers web site, in your unstated country.
TV are not the same world wide, ever.
so parts must be sourced that work in YOUR country.
if used part can not be found (and good) one bay
the ask TCL for parts.
is TLC as Indian maker? ,not sold here in N.America, (us)
here is ours. USA versions only
https://www.tcl.com/us/en/products/home-theater
use google in your country to find your countries support TLC
or ask the above, linked page , contact them ,
here
https://support.tcl.com/us-televisions
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