Lightening strike.....then 50" Insignia TV screen went black but you can hear it. Nothing will show on TV screen, not menu or anything!!! Help

1) Is sound coming through the tv?
2) If you push menu button on remote does anything show on tv?

Hiya!
Do any other devices show video when connected?
SD Cards?
DVD Player?
If not, it could be the board is bad
Let me know

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

this is a buffer issue.

do the line go through the menu if you display the menu when the lines are visible?

do the lines go from the top to the bottom of the screen or stop halfway there?

do the lines change colors?

if the lines go over the menu and all the way down to the bottom of the screen, then its a buffer issue, top and bottom buffer.

hopefully it's just halfway then you only have to replace the top buffer, less money to spend.

When an Insignia TV is locked, it keeps you from watching all of your channels by only displaying a black screen. Insignia TVs are locked from a single button command on the remote control, so it is easy for you to lock the TV by accident. Since Insignia TVs can be locked so easily, it's important to know how to undo this command and unlock the TV yourself. So, unlock your Insignia TV with the push of a button and once again enjoy watching your favorite programs.
• Find the lock button on the Insignia remote control. The lock button is located on the third column from the left on the second row from the top of the remote.

•Stand within operating range of the Insignia TV, then aim the remote at the TV's receiver and press the "Lock" button on the remote control.

• Aim the remote at the TV and press the channel buttons to make sure the TV is unlocked. When the TV is locked, it shows a black screen and does not allow you to view anything else. If the screen remains black, press the "Lock" button again. If this doesn't work, change the batteries in the remote and start over at step .

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ http://electro-medical.blogspot.com/In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Tries tv unplug,replug it back like about an hour later.For the tv,to do a resetting itself.It is an auto detection mechanism to protected itself circuitries for not letting more power than it need for damaging itself.This disconnection and reconnection of the power source should be able to give ur tv a 50/50 chances to be working again.Not,must hire a tv tech. to for a trouble shooting and replace components parts,bcause the lightening have a source power to high of a voltages for the tv protection circuitries to handle.

U still have Close Caption functions is on.Look for a button on the remote that said CC.Used that button pushes few times.Make sure all like CC1,2,3 to all off.No more black boxes,will show up on ur tv screen.

MAY BE BAD MAIN BOARD
http://bestbuy.partsearch.com/PartSearch.aspx?PartNumber=756TQ8CBZK027&x=35&y=13

Hello Mabsab:

The repairs may cost starting at $ 75.00 to $100.00 for the estimate and basic trouble shooting the final cost of the repair may be about $200 to $400.00 dllars depending on the price of the part and the labor that is charged.