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Samsung LNT4042HX LCD -unit powers up but no picture on any inputs or antenna, menu will not show, sound is fine.

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It seem to be light bulb problem to me, good luck

Posted on Sep 19, 2008

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Feb 03, 2016 | RCA Televison & Video

1 Answer

Lcd tv troubleshooting


Check for power supply trouble. The green LED on the front panel should light if power is getting to your TV. The "no signal" indication may mean no antenna or cable input is detected

Aug 21, 2013 | Televison & Video

1 Answer

When I switch on the unit, i can hear the sound but there is no picture


Hi! Welcome to Fixya!

If you are unable to view video on your television set, the issue may be that the TV's video input selection does not match.

The TV input source must match how the device for example DVD player is connected to the TV. At the back of Samsung's LN40A650A HDTV are three HDMI inputs, plugs for component input, an antenna input for the DTV receiver and a VGA input. Please check on what port the device is plug.

To correct the issue, use the TV's remote control and change the video input selection.
  • Press the Menu button on the remote control and navigate to TV Input
  • Only ones that are actually connected are highlighted and available.
  • If there are multiple device connected please make sure you select the device you want to connect.
You may also check if all cables are properly connected.

Thank you.

Mar 12, 2011 | Samsung LN40A650A LCD TV

1 Answer

Lg 42' lcd cant get video signal i can get sound and menu pictures all come up. but no output from cable or ps3


I guess your either using the scart socket or the HDMI socket. You have gone into the menu and changed your input source to either HDMI or Scart havent you? Does your TV aerial input work when switched to Antenna on the input source menu. If these dont happen then you have a faulty main pcb.

Feb 13, 2010 | LG 42LH40 LCD TV

1 Answer

Lost entire picture, sound and everything else OK


check the invertor boards resistors they power the back lights
also check for any capactors that have blown (raised tops) they look little bateries

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1 Answer

HD50LPW42 screen is black with antenna inputs


It sounds to me like you have a tuner issue, I have seen this before. If you have a good picture from other sources and they have the same antenna input, the tuner is suspect.

I hope that this helps you solve your issue.
Thanks
asnowman

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1 Answer

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Use the menu button in the front screen of your tv.Maybe your remote control need a battery.

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6 Answers

Samsung lnt4042hx/xaa 40in lcd tv wont turn on


I concur with Lightnbaby.... had same problem... my TV LNT4042HX/XAA took 10 min to start sometimes... the capacitors on the power supply board had bubbles on top 4 of them all 10/1000Uf. Samsung wanted to charge $220+ to have a guy come out and fix. J&J parts (samsung vendor) wanted $108 for a new board. I replaced the 4 capacitors for $4.68 and the TV works fine now!!!!!

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1 Answer

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or antenna try ch 5 ch 12 re auto scan the chs in menu again readjust antenna

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