Why did my heater stop working? on 1996 Lexus SC400

Well the display has always been dim since the day I got it,but it went out completely won't power on completely dead?

Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
2 answers 2 comments
You may have a problem with the heater control head if the entire display will not light up.
Thanks ;)
seek a diag and est as to not waste money on guesses
Thanks ;)