20 Most Recent Samsung LN40A530 40 in. LCD TV Questions & Answers

What is the model number?

Check and replace the damaged component/s at its T'Con board. In most cases, T'Con board might need replacement. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

go to menu settings and reset the tv back to factory default
note this will also reset any of your customize features such as clock color fave channels

Check the AGC voltage, and the supply voltage to the tuner. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Fault with main board. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/

Yes,the fuse in the power supply board,that the board,where the power a/c cord plug into it.Check ur power source?Yes,than the tv power supply board is dead.These modern circuit boards design never kill the fuse that easy.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

This could be hard to know, My best guess is the main board but there is a chance the display panel is bad---look like a swirling black cloud?

caps problem on power board

The TV has a internal fault, you will need to get a diagnoses to know the cause.