Just shut off one day recently. No video, no sound, nothing.

This set is old but I still love it and would hate to toss it. From
what I have read, there is a common power supply component failure with
this model and that some places sell a kit with parts. Does anyone
know where I can purchase this kit? I'm not a TV expert but I have
serviced electronics for many years in the past and I'd like to give it
a try being that it's only five components to replace. Thank you.