My Tv made pop sound and now the red lifgt blinks 4 times.. And no picture. any idea what I need to do and the cost?

it is not a good sign. If the tv screen is dark (no picture) and no sound but the standby red light is continuously blinking then it could mean the power supply board in tv is faulty.

Usually a few burnt out capacitors on the board but hard to replace yourself unless you are experienced in this sort of work. From the model it appears a reasonably recent unit and you may want to get it checked out by a repairer at least to get an estimate of the cost.
See this site to get some idea of the part costs.
PANASONIC TELEVISION TH42PA50A Parts

Hi,
Is is standby light blinking red or any other light? Let me know how many times red standby light blinking after three seconds long pause to provide you helpful info.
It seems pop sound was due to broken lamp, please check lamp inside tv and if it is broken, replace it to solve tv problem.
Hope this will help.
Thanks.

Hi there,
5 blinks means there is a problem with the video board. It could be as simple as unplugging everything, includding power. Wait 3 minutes then plug power only back in. Or it may be a damaged component that requires replacing.
Hope this helps
TV_Doctors

Whenever this happens it means that your picture has been destroyed it's usually buy a video card you probably need a new one of those

Pop sound shows that some thing went wrong inside TV and most probably any part got busted.
Let me know model number of your Sony TV and does its standby red light blinking? if yes, how many times it blinks between 3 seconds interval.

The pop you heard might have been color weel braking and it might be stuck color weel dont move tv wont come on color weel is inside of engine you would have to replace whole engine 900-up

red light flashes 4 times then stays on for about 5 seconds then flashes 4 times again any idea what this means and how i can fix it tv is about 4 years old and only just started doing this

4 times blink error shows that any FAN is not running in TV as there are 4 fans in this TV.
Please check fan connectors and make sure all are plugged securely.

hello 4 blinks means no vertical deflection

shaun

Sounds like a main STR regulator problem