Popping sounds means that there's a discharge inside the tv. Since the HDMI inputs have also failed my guess is that the 20 volts power rail from the PSU has problems, most likely caused by failing capacitors. The tv must be opened and that rail checked. This requires some electronics expertise, if you don't have it then it's time to call a repairman - his labor bill will be much higher than the price for the replacement parts.
366 views
Usually answered in minutes!
×