My TV was struck by my 2 year old at the bottomest portion of the screen by the Samsung logo, the Model number is UN46EH5300F

SOURCE: When I turned the tv on only vertical lines appeared

I talked to a Samsung support helpline and it needs to be taken to a service center for repair.

SOURCE: TV turns off and then on again every five to ten minutes!

Most likely the TV has a power supply related problem. It's possible that it maybe a bad capacitor or transformer on the power supply board. But, I can't say it's 100% the problem because I can't actually look at the tv over the internet. I can only make guesses with the symptoms.

You have a few choices:
1. You can try leaving the TV unplugged for 30 - 45 minutes so the TV can discharge and reset itself.
2. If by chance the TV is still under warranty by extended plan, go that route.
3. If you have some electronic experience, if you can find and purchase a Service Manual over the internet; It will help you diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you red light blinking codes, circuit diagrams, test points, and part# lists.Usually, cost under $20. And most cases the new part cost less than $15.
4. Pay a TV shop to do the repairs. It maybe costly, but get an estimate of how much they will charge. That way you can decide if it worth repairing or replacing the whole TV.

I hope I shed some light on the subject for you.

SOURCE: samsung less than year old, sound but black screen

lizau2011, This is probably a premature failure in one of the power supplies inside the unit. If unit is under warranty you need to contact the Samsung people to get it repaired. Bye for now. louie12fix on fixya or lmistyrel @aol.com

Deepak Mathur

• 101 Answers
• Posted on Jan 22, 2011

SOURCE: I WAS WATCHING MY SAMSUNG

This fault is due to leakage of electrolytic capacitors in the vertical stage that is why top retrace lines are visible over the picture,if you are technical person check the capacitors in the vertical stage by replacing the same.

SOURCE: Samsung Model 860 LCD TV.

If the screen is black and stays black, no sign of life at all, you may have one of many tv's with faulty capacitors on the Power Supply Board. Capacitors are responsible for distributing specific amounts of power to a tv's components. That would explain why you have sound but no picture. Most likely, capacitors that send power to the screen have failed.

You have a few options. The first and most obvious is to have it fixed by a pro. The second would be to replace the faulty PSB. The third option would be to replace individual capacitors.

Good luck

Let me know if I can help further.

Kaufman605