TV screen flickers when turning on kitchen light

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Tomitsa

Tomitsa

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Feb 13, 2014
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Please help! This is so frustrating!

I bought Samsung 40f6400 tv. I noticed after a few weeks that my screen would flicker sometimes (mostly in the evenings) when i would turn on my kitchen light. This guy came over, looked at electricity, everything was fine. Then, after a week, same problem all over again. Since I'm working in IT I got an UPS unit at work, this one: CyberPower 600EI-B-GP. I hooked my PC and TV on it to preserve them from damage. They both use like 170W. So, I thought everything is settled. I was very confident about it.

Today, I turn on my kitchen light and the TV flickers. I repeat it 3 times, it flickers 3 times. I don't understand it. Shouldn't the UPS take care of that? Anyone had a similar problem? I'm at wits end. Feeling like I've been cursed here. What should I do?
 
Solution
clutchc
If it doesn't involve too much work/expense, replace the fluorescent fixture with a conventional incandescent fixture. Sometimes when the fluorescent lamp itself starts getting dark areas, the EMF will be worse. Replacing the lamp MAY help, but no guarantees.

If you want to test the EMF theory, remove the kitchen light fixture and temporarily hang a simple socket/lamp there. See if the issue is gone.
http://images3.cableorganizer.com/temporary-work-light/images/GI-CLS.jpg
You can find these inexpensive items at any hdwr. store.
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Yes, actually it is a fluorescent light! Lamp is Tungsram f 33 cool white. I have another lamp connected to the same extension cord where that fluorescent light is plugged in, an ordinary desk lamp.
 
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Any type of ballast like the ones they use emit a wide range of electromagnetic interference, especially older ones that are poorly shielded or have poor noise reduction. This EMF 'noise' can transmit both through the air and through the electrical wiring. As the ballast begins to die (ages), the noise gets worse.
 
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Wow. What would be the best thing to do? To replace the bulb? Or stop using the light all together?

 
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If it doesn't involve too much work/expense, replace the fluorescent fixture with a conventional incandescent fixture. Sometimes when the fluorescent lamp itself starts getting dark areas, the EMF will be worse. Replacing the lamp MAY help, but no guarantees.

If you want to test the EMF theory, remove the kitchen light fixture and temporarily hang a simple socket/lamp there. See if the issue is gone.
http://images3.cableorganizer.com/temporary-work-light/images/GI-CLS.jpg
You can find these inexpensive items at any hdwr. store.
 
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Solution




Thanks for the quick and precise response! I'll try both and let you know how it goes! Interesting thing to test. But till then I'll definitely stop using it. I'm too worried about my TV.
 
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The TV flickers when the lamp is turned on and off. The interesting thing is that it's not always. I've started it during the day also but nothing happened. It's usually in the evening, as weird as it sounds. If it's from 7-10pm it's 99% percent the TV will flickers. it's the weirdest thing.
 
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If it only happens when the light is first turned on, it is most assuredly EMF interference from the florescent lamp. Aggravating, but it will cause no damage to the TV. It is simply corrupting the video signal the TV is receiving with EMF noise. Good luck with your project.
 
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Same problem that I am having op. I do not have any florescent lighting in the house, so it unfortunately blows that theory. Did you ever figure it out?


 
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Unfortunately, because the flat was sold I had to move out and that's why I never tried replacing the fixture or a lamp but I did try replacing the bulb and it didn't help!

I don't have troubles like this in a new flat but there's no fluorescent lamp either. It's definitely not the TV. So, I guess, it could be the circuit or the fluorescent bulb. I'm sorry I can't be of more help.
 
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I also had similar issue. But I noticed the problem is coming only when u r watching something through ur dish tv. When you watch something through usb, then issue is not coming. looks like some issue through dish connection.


 
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