Of course w/ my luck, the TV is EXACTLY 1 year and 1 week old so no luck with any kind of warranty. no button is stuck both on the remote and the TV, turn it off and back on after a couple of minutes. If could be a $10 fix or a lot... - Sanyo dp50747 Plasma TV ... How To Reset A Coby TV. Obvious aside, yes - remote and also tv buttons result in the same. coby says sorry! You can read this article carefully for avoiding the Vizio tv shuts off randomly issues and also solve Vizio tv won't turn on problems. Any suggestions to fix this? There might be a stuck power button on the remote, or the remote's batteries are running low. Social Media Specialist. In addition, you can do a "power reset" of the TV, if you unplug the TV from the power socket and press and hold the power button (on the TV, not on the remote control) for at least 10 seconds. Right now I have it hooked up using the coax cable from the wall to the tv's coax input. 2 – Check to be sure all cable and cords are securely connected to the TV inputs and component outputs. I turn it on and the splash screen comes up, but then within a second or two the TV powers off again. Follow this guide for the fuses. Look for any bulging tops on the caps as well as any leakage. I don't have the remote for it - it broke. I am an IT guy so I have some basic hardware understanding; upon some research about LG TVs, I found that the issue is oftentimes blown capacitors. The blue LED turns on when it's plugged it but it won't power on. Message 49 of 54 (2,787 Views) 0 Kudos John-BBY. If there is nothing wrong with the remote control, i.e. A TV that turns itself on or off isn't necessarily broken. I was told that if I unplugged it for a few hours that it may reset the tv and that would take care of it. Easy Fixes for Common TV Problems. After warmup (about 30 minutes) TV turns off and then restarts itself in 30 second, stays on for about 3 minutes and this on/off cycle repeats indefinitely. For the first time ever today it turns on stays on for 10 seconds and then automatically turns itself off ... coby lcd tv started turning off after 5 months. Other than that only the power cable is hooked up. I know I shouldn't have bought a Coby TV but it was on sale. Here is what to check when your TV is turned on, power light is ON, but no picture is seen or sound is heard: 1 – Be sure the component you are using (Xbox, Cable, SAT, ROKU) is turned ON. Now it does that same thing every time. can't seem to find repair shop. :twisted: should i just junk it. Model: NS-40D420NA16. The only thing that "worked" since then, is the LG logo below the display turned on for a second when turning on the TV. extended warranty with store went out of business. When you first turn it on it usually will turn itself off and back on by itself and after it has been on a while it does it less frequently. Basically, I came home one day and went to turn on the t.v., and it made the sound like it was turning on, but then turned immediately back off. A simple, easily fixed problem is usually the culprit. Reasons Why Your TV Might Be Turning Itself On . ... then press the menu instead of the power button it will eventually turn on then after an hour or 30mins will do power off using the tv power button then turn it on again in order that the remote will function.use a 110v transformer. Nick,It does sound like a power board issue. Most of the Vizio Smart TV's users faced the Vizio tv keeps turning off and on itself problem. If your television suffers from a distorted picture, weird colors, or the dreaded "soap opera effect," these simple fixes can help improve your picture. My Coby TV won't turn on anymore. 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