Power light keeps flashing on my samsung 40 inch tv won't turn on

SOURCE: wont turn on

The power supply board has been defected. Replace it with a new one.

Eric Rotmil

• 587 Answers
• Posted on Aug 27, 2009

SOURCE: my samsung lnt 4042 40

Hi welcome to Fixya,
The ticking is from the TV not starting properly you should hear the tone noise . here is the solution:
It could be just a few bad capacitors on the power supply, if you want to attempt the repair yourself you can do a visual of the power board caps will appear swollen on to.
We do not recommend do it yourself, but depending on your knowledge and technical ability you may be able to.
with the back removed you will usually see two circuit boards the upper one is the power supply, it has a few capacitors on it (cylindrical standing straight up soldered in mark on the sides with the positive/negative sides and MF and Volts values)
Samsung uses mostly 1000Mfd at 35Volts rating capacitors, they cost about $1 each (680mfd will also work fine)
usually I replace about four of them (or all the bulged on top ones) .
The power board and back unscrew with a medium philips screwdriver, if you do not know how to desolder and resolder then do not attempt this as you may damage the TV more than fix it.
hope this helps
thanks for using Fixya
Eric

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

Instant Repair Help over the Phone

6ya.com

Save Time & Money by instantly connecting to...

SOURCE: Samsung LCD 40 inch LNT4061

Howdy,
It sounds like you have a Power Supply Board problem. The PSB is the center Board (towards left) after you remove the back off the TV. Remove Board from TV with the 6-7 screws. Replace capacitors CM852 & CM853; 2200ufd 25volts.

Thanks for using FIXYA, big IRISH.

SOURCE: 3 year old Samsung 40 inch LCD TV will not turn on

The problem is 4 capacitors on the power supply board. Just had mine done under warranty. They (Sears) replaced the whole power board but you can get larger capacitors and just replace those for alot cheaper if not under warranty.

SOURCE: Hi, My SAMSUNG LE40R88BDX/XEU LCD 40

It sounds like the power supply board has some bad capacitors that need to be replaced. Samsung is covering the cost to repair this problem on some models. You can call 1-800-samsung to find out if your unit is covered.