Our 75 inch tv we just purchased April 2020, Turns on but the screen is all blue no picture. I want to know how to fix this problem.

Maybe overheating, but try power cycling it first

Samsung TV - Power cycle your TV to solve any minor issue ...

www.samsung.com > ... > TV & AV

Oct. 7, 2020 - If you're running into glitches, you can power cycle your TV. Believe it or not, many minor issues with the TV can be fixed with a power cycle. Missing: un60es7150f ‎mode

Power cycling on and off. - Samsung Community - 1464412

us.community.samsung.com > td-p

Oct. 11, 2020 - The screen will display the Samsung logo and then it will turn off. It will not show a picture of play any sound. As long as it is plugged in it turns ... Missing: un60es7150f ‎mode

Solved: Samsung KS8000 power cycling - Page 10 ...

us.community.samsung.com > td-p > page

Jan. 10, 2020 - Solved: My 65 inch KS8000 will not power on. Just does a constant power cycle where the backlight comes on then goes off again.

If the TV is still under warranty return it ASAP. The set will need to be serviced

You have two problems: blue lines is convergence problem and the blue screen and shutdown is Blue Screen control is up too high.

42 inch hdmi digistar tv has no picture

hi first of all u should check ur transistor connections.Check your Horizontal and vertical output transistors.You should also check the horizontal and vertical yoke connections as well as your low voltage regulators.... if any of these got damaged u should purchase a new one.. but try to purchase with the help of a tv service assistant...
thank u!!!
rate me

This will be in the vertical circuit. Probably a leaky capacitor. A tv shop should be able to fix this for around $75-$100

it sounds like the blue crt is failing Pull the front off and turn the tv on
When it still has a good picture tap the blue crt
if it flashes blue with lines across the screen then you know it is a bad crt

It might not be worth fixing

Good luck

The lines you saw, i;m sure they are the ones called retrace lines but know the failure could be located on the red CRT board. Most likely the video amplifier is defective and not necessarily the CRT.
What is the model number of your TV?

these sets have bad connections in the picture yokes take the spekerr grill off and front cover move the wires around and see if the pic comes back be careful ok