We have a Polaroid TV, Model FLM3732. When we turn the TV on, there is a loud pitching noise that lasts for 3-5 minutes, and then goes off and runs normally. Is there anything we can do to trouble shoot?
Televison & Video - Polaroid - FLM-3732 Television
Answers & Comments
The high pitch you are hearing is probably due to failing electrolytic capacitors in the power supply module. Eventually this will no longer function. A tell tale sign would be swollen caps "tops are convex" on this pc board usually 1000mf 25 v caps or simular. I would refer to competent tech for repair of module to component level.