Samsung forum

General discussion

Samsung LCD TV switch on problem

by slukos / January 1, 2011 6:42 AM PST

My Samsung 40" tv (LA40S81B) is around 2 years plus old and is a made in Malaysia model.
One night the tv switched on by itself in high volume and woke us up, I came and switched it off and went back to bed.
From the next morning, the tv wont switch on ! the red led flashes five times and remain on for 4 seconds and again flashes for five times.
After a few days the tv switched on by itself again and worked for around 30 minutes!
After going through the forums I purchased 1000uf, 16V capacitors online and opened the tv but found al capacitors are good. Any how I changed all the 4 capacitors with 1000uf, 10V rating but the symptoms are same, no change at all. I then tried the EPROM reset found the forums but again no result! assembled tv back and left it switched on, and again a few days later found the tv is on! switched it off with remote and tried switching on again, but again the led just flashes!
Any one can help me please???

Post a reply
Discussion is locked
You are posting a reply to: Samsung LCD TV switch on problem
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: Samsung LCD TV switch on problem
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
I'm afraid this is no DIY job.
by Kees_B Forum moderator / January 1, 2011 6:44 AM PST

You'll need a qualified tech. Tried 1-800-SAMSUNG (if you're in the USA)?


Collapse -
Samsung LCD TV switch on problem
by slukos / January 1, 2011 9:26 AM PST

I live in Canada and tried 1 800 samsung.
They are not able to attend to it as there is no Samsung service centre where I live. the nearest is 500 kms away !!!

Collapse -
by R. Proffitt Forum moderator / January 2, 2011 12:52 AM PST

Canada is one big place. I lived in Richmond, BC for many fine years.

I hear you but if you are to become a TV repair person you find yourself yearning for the days when you got out your Sam's PhotoFact and scoped out a set. Today you replace boards or CAPS when it's failing the visuals.

As this is DIY, Samsung does not offer a service to DIY repair. You might order parts but no maker I know of offers diagnostics or such.

Sorry but now it's time for board swaps.

Collapse -
Samsung LCD TV switch on problem
by slukos / January 3, 2011 12:14 AM PST
In reply to: Ouch.

trying to find out where I can get boards for swap !But if I have to buy both the T con and the power supply board, then i will be spending more than the price of a new tv.
Is there a place where I can return the boards if it is not the problem???

Collapse -
If you've bought parts before.
by R. Proffitt Forum moderator / January 3, 2011 12:19 AM PST

No one I know accepts returns. You can ebay the parts just like all things.

You may want to reconsider a shop repair.

Collapse -
Should only need power board
by snafu169 / January 3, 2011 3:01 AM PST

I don't know the exact name, but mine was under warranty and they replaced the power board, just call their service department.

Popular Forums
Computer Help 51,224 discussions
Computer Newbies 10,453 discussions
Laptops 20,090 discussions
Security 30,722 discussions
TVs & Home Theaters 20,937 discussions
Windows 10 1,295 discussions
Phones 16,252 discussions
Windows 7 7,684 discussions
Networking & Wireless 15,215 discussions


What do the color stripes mean on your tires?

Brian Cooley tells you why you might see various color lines on the wheels of your automobile.