Chosen Solution
Philips 47PFL7432D/37 suddenly started to flicker and go dark on one side only. Symptoms point to backlight inverter. TV has master and slave inverters; by location seem to be associated with sides of screen. As a rule (general or specific), should both inverter boards be replaced if it seems that only one is failing?
Mike Pepper my rule of thumb is that when one fails the other one is most likely right behind. Always do a visual check for any burned, charred or missing components. If you have one of those issues on either one of the inverters, replace only the one with the failure.
