20 Most Recent Samsung LN-R409D 40 in. LCD Television Questions & Answers


Hi quinny 1982,

The first thing to check do is look in the manual on how to do a factory reset.

Once you've done that look at this page on how to check the signal strength the TV is receiving. Anything less than 50% and most tuners will not display a picture.

If the signal strength is okay then try another auto tune.

If your still having a problem then I'd suggest you you might have a faulty unit. However, a lot the time companies like to blame your reception area, TV Antenna (Ariel) or cable length or quality. Yes, old coaxial cable used for analogue TV is not very good when used with digital equipment (not a surprise)!

From what you've described, if you can only get a mono signal I'd be surprised it that's actually a digital channel.

Don't forget to check your Antenna connectors.

Hope this is helpful.

Best of luck.

Spare head 2.

Samsung LN-R409D... | Answered on Jul 15, 2014


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...

Samsung LN-R409D... | Answered on Jul 15, 2014


Used wrong menu, went to DMENU all OK now

Samsung LN-R409D... | Answered on Mar 07, 2014


check the mute control on your remote and on the tv. mute button is at very top of tv

Samsung LN-R409D... | Answered on Oct 17, 2013


Hi there Check , as I am sure you have, if the sound is on mute. Try other channels and check all cables and connections. Good luck

Samsung LN-R409D... | Answered on Aug 25, 2012


Describe the issue if you can please.

Samsung LN-R409D... | Answered on Jun 15, 2012


If a tiny area it may be the LCD display panel itself--fatal.

If one half or screen left-right or up down it could be an inverter issue.

Samsung LN-R409D... | Answered on Apr 17, 2012


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.

Samsung LN-R409D... | Answered on Nov 02, 2011


Is this the one you have? Not sure what rivet you are talking about, the HMDI is surface mounted, it may just need to be resolder carefully back on.
http://s807.photobucket.com/albums/yy352/budm/SAMSUNG/SAMSUNG%20LN-R409D/

Samsung LN-R409D... | Answered on Aug 19, 2011


check all bad capacitor in power section

Samsung LN-R409D... | Answered on Aug 19, 2011


U are out of luck,because the tvs LCD screen panels are 90% important tvs and it is very limited in productions by the tvs corporations only.The tvs corporations they'll sell the tvs LCD screen panels to u.But they'll charges u same as a new tv.Sorry ur tv have broken or damages LCD screen panel now,only can be used as salvages tv for it electronic boards only now.

Samsung LN-R409D... | Answered on May 04, 2011


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

Samsung LN-R409D... | Answered on Jan 03, 2011

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