Question about Samsung LN-R409D 40 in. LCD Television

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Blank screen Samsung LN-R409D, audio when turning on and off and blue light at power button in on position???

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  • 39 Answers

Hi there
Im afraid this sounds like a fault with the TV. Try turning it off at the wall for 3 minutes, and then with nothing plugged into the TV, turn it back on. If the problem persists contact the manufacturer.
Hope this helps
TV_Doctor

Posted on Jan 03, 2011

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Why will my LCD tv not power up?


Good day,
Maybe some more information needed here. Do you see a flash from the screen at all? Do you see the Samsung splash logo, and then the TV shuts down?

If so, this is the safety working on the TV. The power board senses the voltages needed to power the back lighting. If there is a wrong level, shutdown occurs to protect the TV.
Could be a bulb, or the power inverter board.

Good luck...

Jul 14, 2014 | Samsung LN-R409D 40 in. LCD Television

1 Answer

My 40" samsung model no.LN-R409D has sound, no


You have bad T-CON board, check the surface mounted fuse (2A fuse) to see if it is blown, you may want to replace the board, common failure in this model.
http://s807.photobucket.com/albums/yy352/budm/SAMSUNG/SAMSUNG%20LN-R409D/

Read below for more details:
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Nov 02, 2011 | Samsung LN-R409D 40 in. LCD Television

1 Answer

Sound but no picture. just a blue screen.


Two causes: The T-Con bd is bad or the Main bd is bad.
Start with the T-Con bd first.

Apr 09, 2010 | Samsung LN-R409D 40 in. LCD Television

1 Answer

Red dots across the screen


Please check the power supply board, if there is any Pup-Up electrolytic capacitors, please replace them.

May 25, 2017 | Samsung LN-T4665F 46 in. LCD Television

1 Answer

Center of screen goes black


Check your closed-caption settings and make sure you have captioning turned off. You'll probably find it set for "text" mode right now. This causes the set to blank out a portion of the screen for the text, but there isn't any text to display.

Feb 11, 2009 | Samsung LN-R409D 40 in. LCD Television

1 Answer

TV won't turn off


Problem solved. I opened the configuration menu, went to Setup, More, Light Effect, changed setting from "Always" to "In Watching TV".

Dec 09, 2008 | Samsung LN-T4071F 40 in. LCD HDTV

1 Answer

Optimal settings


Samsung LN-408DX/XAA

How do I get the PIP to work?

Nov 20, 2007 | Samsung LN-R409D 40 in. LCD Television

2 Answers

Samsung lcd tv le32r8


perchè quando collego il computer al televisore l' audio è assente?

Oct 15, 2007 | Samsung LN-R409D 40 in. LCD Television

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