Insignia Ns46e340a13 Got Red Stand By Light But Don't Turn On After Many Attemps

Hi I have a Insignia 46" model NS46E34A13 built in 2012 and power supply board is the model 715G5173-P02-W21-002M ;my TV issue is that takes time to turn on I have to plug and unplug the TV from the wall several times before I got to turn on the beginning it use to do it one or two times now with the time is taking 4 o more before I can make it work. I'd follow your video and take the back off the TV and after reviewing the capacitors they look fine there's none being inflated like the ones on the video do I missing something??? or maybe its another issue with the TV??? I got pictures I'd take that i can send you maybe you can see what i didn't I got some experience with electronics and soldering but in my visual inspection I didn't got anything I will appreciate your guidance if I can test the board in some other way I know how to use a multimeter and with your help I hope I can fix my TV before stops working.