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LG 47LG70 Support Question

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Question posted by Sisco5065 on November 13th, 2023

All Channels Have Sound Some Have No Picture

all channels have sound some have no picture

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Answer #1: Posted by SonuKumar on November 13th, 2023 10:33 PM

SonuKumar

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May 9th, 2021

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There may be a few reasons why some channels have sound but no picture on your LG 47LG70 TV. Here are a few things you can try to fix the problem:

Check the HDMI connection. Make sure that the HDMI cable is securely plugged into both the TV and the cable box or other device.

Try a different HDMI cable. Sometimes, HDMI cables can go bad. If you have another HDMI cable, try using that one to see if it solves the problem.

Change the input on the TV. Make sure that the TV is set to the correct input for the device that you are using.

Update the firmware on the TV. Sometimes, a firmware update can fix problems with the TV's video output. You can check for firmware updates on the LG website.

Reset the TV to factory settings. If none of the above steps work, you can try resetting the TV to factory settings. This will erase all of your settings, so be sure to back up your data before you do this.

If you have tried all of these things and you are still having problems, you may need to contact LG customer support for further assistance.

Here are some additional tips:

If you are using a cable box, try restarting the cable box. Sometimes, this can fix problems with the video output.

If you are using a streaming device, try restarting the streaming device. Sometimes, this can fix problems with the video output.

If you are using an antenna, make sure that the antenna is properly connected to the TV.

I hope this helps! Let me know if you have other questions.

Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.

Regards,
Sonu
Your search handyman for all e-support needs!!

Related LG 47LG70 Manual Pages

Specification (English) - Page 1

47LG70 47" CLASS LCD 1080P HDTV (46.9" diagonal) • Full HD 1080p Resolution • 40,000:1 Dynamic Contrast Ratio • TruMotion 120Hz • 4x HDMI™ V.1.3 with Deep Color • Intelligent Sensor • 24p Real Cinema • AV Mode (Cinema, Sports, Game) • Clear Voice • LG SimpLink™ Connectivity • Invisible Speaker System •...

Specification (English) - Page 2

... (Picture & Sound) 3 Modes Picture Selection Mode 8 Modes ISFccc • Intelligent Sensor Mode • DTV Signal Strength Indicator • AUDIO Mono/Stereo/Dual (MTS/SAP) • Audio Outout Power (Watts - All other trademarks are the property of LG Corp. 47LG70 LCD 1080P HDTV 47" Class (46.9" diagonal) TECHNICAL SPECIFICATIONS LCD PANEL Native...

Owner's Manual (English) - Page 1

.... Retain it for future reference. P/NO : SAC30708020 (0812-REV11) www.lgusa.com / www.lg.ca LCD TV PLASMA TV OWNER'S MANUAL LCD TV MODELS 32LG30 37LG30 42LG30 42LGX 47LGX 32LG60 37LG60 42LG60 47LG60 52LG60 37LG50 42LG50 47LG50 52LG50 32LG70 42LG70 47LG70 52LG70 PLASMA TV MODELS 42PG25 50PG25 50PG60 60PG60 50PG70 60PG70 47LG90 32LG20 Please read this is the...

Owner's Manual (English) - Page 5

... coming from the TV or hear strange sounds, unplug the power cord contact an authorized service center. 25 Do not press strongly upon the panel with such power lines... or circuits as nail, pencil or pen, or make a scratch on . tion. Doing so may produce some protection against voltage surges and built-up static charges. ON DISPOSAL (Only Hg lamp used LCD TV...

Owner's Manual (English) - Page 6

... 46 Audio Out Connection 47 WATCHING TV / CHANNEL CONTROL Remote Control Functions 48 Turning On the TV 50 Channel Selection 50 Volume Adjustment 50 Quick Menu / Favorite Channel Setup 51 Initial Setting 52 On-Screen Menus Selection 54 Channel Setup - Eye Care 80 Advanced Control - Add / Delete Channel (Manual Tuning 57 - Preset 75 Manual Picture Adjustment - Real Cinema...

Owner's Manual (English) - Page 9

...scratch or discoloration. Owner's Manual CD Manual * Wipe spots on the exterior only with your TV. For Plasma TV models (Only 42PG25) x 4 Bolts for stand assembly (Refer to P.13) Cable Holder ... missing, please contact the dealer where you purchased the TV. for all models.) For LCD TV models 32LG20, 32/37/42LG30, 37/42/47/52LG50, 32/42/47/52LG70, 47LG90 (Only 32LG20, 32/37/42LG30, 37...

Owner's Manual (English) - Page 10

... PREPARATION FRONT PANEL INFORMATION I NOTE: If your TV has a protection tape attached, remove the tape. INPUT INPUT MENU INPUT MENU ENTER VOL MENU ENTER INPUT Button ENTER VOL MENU Button VOL CH ENTER VOLUME Button (-, +) Buttons CH LCD TV Models 32/42/47/52LG70, 47LG90 CH CHANNEL (E,D)Buttons CH CHANNEL ( , ) Buttons Intelligent Sensor Adjusts picture according to...

Owner's Manual (English) - Page 11

... MENU INPUT CHANNEL ( , ) Buttons VOLUME (+, -) Buttons ENTER Button MENU Button INPUT Button 32/37/42/47/52LG60, 42/47LGX CH CHANNEL ( , ) Buttons Intelligent Sensor Adjusts picture according to the... Button 9 LCD TV Models 32LG20, 32/37/42LG30, 37/42/47/52LG50 PREPARATION CH Intelligent Sensor (Except 32LG20, 32/37/42LG30) Adjusts picture according to the surrounding conditions....

Owner's Manual (English) - Page 19

... instructions. A B Product LCD TV PLASMA TV Model 32LG20, 32LG30, 32LG60, 32LG70 VESA (A * B) 200 * 100 37LG30, 37LG60, 37LG50 42LG30, 42LG50, 42LG60, 42LG70, 42LGX 200 * 200 47LG50, 47LG60, 47LG70, 47LG90, 47LGX Standard Screw M4 M6 52LG50, 52LG60, 52LG70 42PG25 50PG25, 50PG60, 50PG70 800 * 400 M6 400 * 400 M6 60PG60, 60PG70 600 * 400 M8 Quantity 4 4 4 4 4 ! G LG is used .

Owner's Manual (English) - Page 21

... EXTERNAL EQUIPMENT SETUP section. 32/37/42/47/52LG60, 42/47LGX 1 Align the hole with the tab on the CABLE MANAGEMENT CLIP. To connect additional equipment, see the EXTERNAL EQUIPMENT SETUP section. 19 PREPARATION LCD TV Models 32LG20, 32/37/42LG30, 37/42/47/52LG50, 32/42/47/52LG70, 47LG90 1 Connect the cables as necessary...

Owner's Manual (English) - Page 53

...Backlight (LCD TV Only): Adjust the brightness of LCD panel to a favorite channel, press the F A V (Favorite) button repeatedly. Except 32LG20, 32/37/42LG30 3 Q. I Picture Mode: Selects the factory preset picture depend on...G 3 Off Vivid Standard Off English Off Add Eject LCD TV Q.Menu Aspect Ratio Backlight Clear Voice Picture Mode Sound Mode Caption Multi Audio Sleep Timer CH Del/Add/Fav...

Owner's Manual (English) - Page 56

...G Local Dimming, Local Dimming D e m o: Only 47LG90 G Backlight, Power Indicator, TruMotion Demo: Only LCD TV. (But, T r u M o t i o n D e m o: Only for 37/42/47/52LG60, 42/47/52LG70, 42/47LGX, 47LG90) G Set ID: Except 32/37/42/47/52LG60, 4 2 / 4 7 L G X. WATCHING TV / CHANNEL CONTROL ON-SCREEN MENUS SELECTION Your TV's OSD (On Screen Display) may differ slightly from that shown in this...

Owner's Manual (English) - Page 78

...; Color 60 • Tint 0R G E E • Backlight 80 E Enter 1 MENU Select PICTURE. 2 ENTER Select Picture Mode. 3 ENTER 4 ENTER 5 ENTER Select Vivid, Standard, Cinema, Sport, or Game. User Mode Adjust the picture appearance to the previous menu. LCD TV only: This feature is disable in "Picture Mode-Intelligent Sensor". 50/60PG60, 50/60PG70 only: This feature is...

Owner's Manual (English) - Page 82

...8226; Tint 0R G • Advanced Control • Reset Screen (RGB-PC) TruMotion Demo PICTURE Move Enter E • Brightness 50 • Sharpness 60 • Color 60 • ... PICTURE. MENU Return to the previous menu. Select Advanced Control. Select Eye Care. 4 Select O n or O f f. 5 RETURN Return to TV viewing. 80 PICTURE CONTROL PICTURE CONTROL ADVANCED CONTROL - LCD TV ...

Owner's Manual (English) - Page 83

... Color Noise Reduction Gamma Black Level Eye Care Real Cinema TruMotion Medium Off Off Off Medium Low Off F Off G High Close For LCD TV 1 MENU 2 ENTER 3 ENTER Select PICTURE. MENU Return to the previous menu. I 37/42/47/52LG60, 42/47/52LG70, 42/47LGX, 47LG90 This function works with all inputs except PC mode. This...

Owner's Manual (English) - Page 84

... all inputs except PC mode. PICTURE CONTROL ADVANCED CONTROL - Only 37/42/47/52LG60, 42/47/52LG70, 42/47LGX, 47LG90 TruMotion provides even better quality for standard use. TruMotion means the panel supports faster frame rates that normal panels which makes for smoother motion in noise. screen in TruMotion LCD models support 120Hz instead of time...

Owner's Manual (English) - Page 87

...TV to flash. 85 MENU Return to the previous menu. I Startup Sound: You can set the the LED on the front side of the TV to be turned on the front side of the TV or set the volume. LCD TV Only PICTURE... Caption Sr:aOrtfufp Sound F Set ID : 1 Standby Light Power Indicator Initial Setting Po:wHeormLieght Demo Mode Low G Off On Off Close Only for 32/37/42/47/52LG60, 42/47LGX...

Owner's Manual (English) - Page 97

... Caption Multi Audio Sleep Timer CH Del/Add/Fav USB Eject 16:9 3 Off Vivid Standard Off F English G Off Add Eject Close LCD TV Q.Menu Aspect Ratio Backlight Clear Voice Picture Mode Sound Mode Caption Multi Audio Sleep Timer CH Del/Add/Fav USB Eject 16:9 3 Off Vivid Standard Off F English G Off Add Eject Close...

Owner's Manual (English) - Page 133

...k 00 ~ 64 Only LCD TV Model l 00 ~ 01 Only Plasma TV Model m 00 ~ 01 21. Set ID is 1~ 99. Error Acknowledgement [Command2][ ][Set ID][ ][NG][Data][x] The TV transmits ACK (acknowledgement) based...t 00 ~ 64 d 00 ~ 01 17. Channel Add/Del m b 00 ~ 01 i 00 ~ 64 23. Key m c (G p.135) j 00 ~ 64 24. Channel Tuning COMMAND1 COMMAND2 m a DATA00 DATA01 DATA02 DATA03 DATA04...

Owner's Manual (English) - Page 137

... converted to the digital (ATSC) local channel 30-3. Backlight (Command: m g) (Only LCD TV model) To adjust screen backlight. For example: The binary...ID][ ][OK/NG][Data][x] 23. Key (Command: m c) To send IR remote key code. Data05: 7 Main/Sub Picture 6 Two/One Part Channel 5 Using Physical 4 Channel Reserved 3 2 1 0 Step 0 Main 1 Sub 0 Two 1 One 0 Use x 0 0 0 0 NTSC ...

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