TV problem when i turn my tv on 20 minutes later it turns off the i turn the tv on then it turns off again.

Bad capacitor on power board. Remove back of tv and check for swollen/leaking caps.

Check all the connections of the flat cables inside the TV. Contact any service technician. If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/

Are you still having this problem?

You may have an intermitent problem with you power suply.
Like lose sockete or connection.Replace the power supply MODULE

Hello,

It's the problem of overheating in the power supply board of the TV.on the power supply board of the tv there are few capacitors and IC.any of this ic is got short or may be weak.so due to this when you start the TV the current passes from electric outlet to the power supply board of TV.but when the current passes from that weak/faulty part at that time current gets stopped or slow and the board overheats and TV shuts off. this is a common problem faced by many other users too.the possible option to solve this issue is to check the power supply board by a meter and continuity tester and replace the faulty component on the board which is short due to which power supply board is getting overheated.its bit technical job but yes its not at all a costly repair to do or get it done by the technician. for required parts it can be easily available from local electronic hardware shop.

Hope this will help in solving the problem...

Unplug,replug the tv back like 24 hrs later.That the whole tv is resetting itself everythings.Tv now should be working again.If still have the same problems,than ur tv DM power supply board is have dying parts,must repair the tv DM power supply board to fix the tv.

Check the "Sleep Timer" settings. If set to 45 minutes then TV would automatically turn itself off 45 minutes from being turned on. The variance in the "on" times is due to the TV turning itself off after not getting a signal from the remote for fifteen minutes.

Good luck,
Techjoel

So, where are the answers?

Your tv has three crt guns that correspond to how it makes colors.

If its just one color acting weird it might be the crt gun for red. That sucks cause it will be hard to replace. I think its possible to fix it but it might not be worth it... Sorry...

I'm the OP of this, and what I did was had it unplugged for about 2 days, plugged it back in and it has worked since.