..simple question to ask

anyone here connecting byond with 2 tv ? hdmi port to 1st tv & component/composit to 2nd tv.
in my case (dunno its relevant or not..huhu),2nd tv (2 tv actually 'kaput' already).first is lcd,tonight
crt tv.apply byond first day promotion.

refer to technician..he say,connecting like that not good.can broken tv.1 decoder..1 tv.

right now planning get new tv but scared if happen again.need apply 2nd decoder ? i heard hdmi switch
can offer settled down sharing 1 decoder with 2 tv..really ?

tq for reading & helping