It shows bars of different colors and then powers off

Easier just buy new ..cheapr then repair. Try unpluggn set for aday..temp fix fora old tv

What causes vertical colored lines on a TV screen? When a TV is showing vertical colored lines, a loose wire cable in the TV might be the cause. If you knock on the back of the TV, the vertical colored lines MAY disappear temporarily. This is a sign that a cable is loose or the T-Con board is faulty.

https://removeandreplace.com/2018/05/01/tv-has-different-color-vertical-lines-on-screen-how-to-fix/

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

go to start menu type in search bar adjust screen resolution then click on advanced settings should find what u need there

check to see if the monitor connections are connected from the Monitor To the computer ,,,

Print a diagnostic page If the steps above have not helped, print and evaluate a diagnostic page to see if the cartridges or the printer is causing the problem.

1. Make sure the printer is on and loaded with unused, plain, white paper.
2. Press and hold the Power button and then press the Cancel button. Release both buttons. The diagnostic page prints. Figure 1: Power and Cancel buttons 1 - Cancel button 2 - Power button

Step 4: Note which cartridges printed which areas of the diagnostic page You must identify which cartridge printed which part of the diagnostic page, so that if you find defects on the page, you will know which cartridge is the problem. However, you can install different combinations of print cartridges in your printer, and different cartridge combinations print different diagnostic page patterns. Your diagnostic page may not look exactly like the picture below, but the right and left cartridges will print in the same areas of the page no matter which cartridges are installed. Figure 2: Diagnostic page layout (the patterns in each area may look slightly different on your page) 1 - Printed by the right cartridge 2 - Printed by the left cartridge NOTE: If you are printing in reserve mode (one cartridge is missing), the missing cartridge's area of the diagnostic page will be blank. Step 5: Check ink levels NOTE: If you have installed a refilled or remanufactured ink cartridge, or a cartridge that has been used in another product, the ink level indicator is inaccurate or unavailable. Look in the middle of the diagnostic page. The bars with "E" (for "empty") and "F" (for "full") at each end show the ink levels in the cartridges. As ink is used, the solid color changes to a faded color. Figure 3: Left (tri-color) cartridge almost full - right cartridge empty Figure 4: Both left and right cartridges almost full

My Dell monitor is showing odd splotches of colored bars.....turquoise bars and pink bars. What is causing this?

Usually when the OSD will not come up, you are looking at a problem with the video boards. Is the power button flashing or showing a different color, or does it look normal in the On position. If it's flashing, then the problem lies with the mainboard not powering up properly. It might not hurt to try a power drain at least:


1. Unplug the product's power cable so that the device is not grounded to the house. Do not simply turn off the power-bar if one is in use.
2. Press and hold in the products power button for 1 minute to release the retained electricity from the capacitors and circuit board. 3. Plug the product back into the wall outlet rather than a power-bar to rule it out of contributing to the problem and turn the device back on.
If this doesn't work, the TV will likely require service.

Try to reverse the cable....use the end connected to the computer at the monitor and the monitor end to the computer. If tapping the monitor doesn't do anything and tapping the cable at the computer does the same faults then I would have it checked or just replace that cable.. Good luck.

No, this is typical problem for defective inverter. Mostly screen appears for some seconds and then turn to black. If you are technician, you can use this link :-).
http://www.lcdrepair.us/1702inverter1900x.html