How to fix my aoc 24" flat screen tfv if it's showing negative screen?

Check and replace its T'Con board. 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/

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/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Try this:
1. Press and hold "Menu" and "Channel+" on the TV. (do not use the remote)
2. Using the other hand, press the Power button.
3. A small screen should appear in the top left part of the screen.
4. Using the remote, select "Memory Recall" and Enter.
5. Power off and reboot the TV and Computer.
6. Run channel auto-scan to regain the picture.

just replace the T-con board and it will work fine again..thats it

This sounds like a power supply problem that causes the high voltage power supply to shut down when it warms up. A repair shop may be able to fix this.

This sounds like a common problem on these TVs. Try a factory reset:

1. Press and hold "Menu" and "Channel+" on the TV. (do not use the remote)
2. Using the other hand, press the Power button.
3. *A small screen should appear in the top left part of the screen.

4. Using the remote, select "Memory Recall" and Enter.
5. Power off and reboot the TV and Computer.
6. Run channel auto-scan to regain the picture.

If this still does not work, perform steps 1-3, but when you get to step 4, select "EEPROM Init". Then steps 5 and 6 to power it off and back on.

Check the volute settigs to these channles. Check whether system set is compactable with input.

Try checking the Video cable (probably HDMI) try replacing the cable.

On the tv press and hold the + and - volume control buttons and the buttons should unlock.

Start your Windows in Safe Mode (pressing F8) during boot process and adjust your Display Settings to a lower resolution.... say 1024 x 768. Once fixed, you can play around again increasing the resolution a notch at a time. Fix ya!