Facing TV Problems? Ask a TV Technician.
loud pop at turn on -- usually the audio mute circuit isn't muting the TV speakers. Is that where the noise comes from?
Multicolor Vertical lines -- are those lines ON TOP of the TV's menu?
Do you know the service menu access and have you tried the internal test patterns with those lines?
Could this be a power board issue
Of course you could have a simple warm up issue causing that. Not likely the power board. Does it still click- click on? OR Do you turn it on and off over and over?
This part - " after trying to turn it self on several time it works fine " can be misleading
Ok, so it appears either the TV's Main board OR power supply is at fault. Did you replace ALL the caps in the same area as the bulged caps, or ONLY the bulged caps? This is important. You must replace all the caps in that specific area. If the TV worked fine with no problems, THEN the problems started to occur, that usually points to the main board being stressed. I've had several TVs that I replaced caps on, they worked fine, then about a week or two later, I find the main board turning the TV set on and off.
Please verify how your TV worked after cap replacement
Hmm, the information I have is 6 capacitors should have been replaced, not just 2.
Take a look at the pictures I am sending you. Check the locations of the capacitors, find out which ones you still need to replace. Let's do that for starters, then see if the problem is still there.
Sounds like you have it figured out. Good luck with that main board repair.