My Samsung HP-T4264 tv keeps turning off, when it does you can hear it go on and off repeatedly without the screen itself coming back on, tried unplugging and removing batteries from all remotes to see if they were the issue.

SOURCE: Volume on Remote powers TV on and off?

This unit has upgrades available for this set. I am not at my shop now, but, I think the problem you described is usually cured by this upgrade. The set is under warranty, contact: 1-800-Samsung for a local servicer. If you need additional help, respond to this post and I'll reply.

SOURCE: Samsung LCD tv - Turns on and off by itself.

Not sure if this is the same problem, but I just moved and set up my Samsung 40" LCD and it has been going off and on by itself with the worst yesterday every 2-3 minutes. After speaking with a friend of mine who is not in the Tv business but just has good common sense, I determined it was likely a bad power strip. The bottom line is I replaced the crappy power strip (which was fully loaded with all 6 outlets in use) with the higher quality one I had in the other room. The problem is gone. I suspect the power strip was failing or real bad quality........try plugging the tv directly into the wall outlet first. hope this helped.

SOURCE: My samsung HP-T4254 shuts itself off and turns

check tv battery- remote.

SOURCE: Samsung HP-T4264 will not autoprogram, locks up on

Reset to factory specifications by turning tv on, and then using the remote, hit power off, mute key, 1, 8, 2, and power on. Interval between key strokes is less than 3 seconds. When tv comes back on it shows Service Mode Display, key up to reset and press enter. Was able to autoprogram without any problems.

SOURCE: TV screen went blank and it began clicking, turning

the power supply board has failed. call 1-800-samsung for nearest service center. power supplies are usually $125.00 plus labor, 1 hour maximum to repair.

Testimonial: "Thanks so much! Samsung customer service was less than helpful with this, but you came through! Awesome!!!"