Tv powers up but no picture

Screen coming on when the main plug is removed is normal, that happens on most TV's...Are the spots that have no volts supposed to have voltage? there is a legend on the board to tell what voltages belong no what pin, check that

Ask friend if broken when given to you. If not I would suspect the power supply is fubar..

Nobody can predict, what might have been happened to your TV after a lightning strike. Do you thing anybody can? Is any technician have a super-natural power to predict the faults that might have been happened due to lightning (More than 10 Million volts to start on stroke) ? Can you?
Sorry.
Contact the authorized service center. OK?
http://electronicshelponline.blogspot.com/

Nobody can predict what might have been happened with a lightning strike; to any electronic device. Contact any service technician to troubleshoot. It is the best. http://electronicshelponline.blogspot.com/

It could happen yes it would depend where the strike entered the TV. Not all lighting strikes hit on the electrical lines, on a TV they can come through the cable, as well as a antenna if you have one hooked up.

if just only raster then can not get any channel the tuner get bad which some parts get burned. if you don't have an idea how to replaced the parts just leave it to the trained tv technician or service shop.tuner is not too expensive unlike replacing an lcd monitor.

Lighting power inverter sounds like get it serviced.

If you are certain you have a lightning surge, almost anything can take down your TV. First check the obvious, do you have power coming out of the wall. Is the surge protector good, if you used one? If you have answered yes to the these questions, you may have acquired a power surge in your TV. You may not find it in your TV. As I have said it may be anywhere in the TV. You will need to take this TV to an authorized service center. It would be difficult for anyone out side a technician to find the problem. Thanks for asking and show all hands of support!

This sounds as if it has shorted out the main power board inside the printer. Some small TV Repair shops handle out of warranty printer repairs, but will charge considerably for this. Unless your willing to pull it apart it would be more economical to replace the printer. But ask around, someone may be willing to give you a quote, and this should be weighed against the cost of a replacement
Unfortunately with lightning strikes the amount of power surging up the line can destroy many components inside the printer,and not much can be done from the outside.
Sorry it was not the answer your looking for, but lightning is a electrical devices worst enemy!!
Regards GM

YOUR SPEAKER MAY BE SHOT.YOUR B + SUPPLY GOING INTO THE AUDIO OUTPUT OR YOUR OUTPUT AMP COULD ALSO BE BAD.