Question 1

the magic remote pointer is super jumpy and inaccurate, can't select anything right

Accepted Answer

DIAGNOSIS The remote's gyro sensor is getting interference. Usually from strong ambient light or reflective surfaces. FIX Turn off or dim any bright lights behind you, especially LED or CFL bulbs. Cover any glossy surfaces (glass tables, picture frames) in front of the TV. Point the remote directly at the TV screen from no more than 10 feet away. IF THAT DIDN'T WORK Re-pair the remote. Press and hold the Back and Home buttons together for 5 seconds until the pairing message appears on screen. Follow the prompts. HEADS UP The remote uses an infrared sensor for pointing, not Bluetooth. Never use cleaning chemicals on the sensor window at the top. It will cloud the plastic.

Question 2

the power light just blinks red 3 times and the tv won't turn on at all

Accepted Answer

DIAGNOSIS Three red blinks is a definite error code. It means a problem with the TV's internal power supply or main board. FIX Unplug the TV from the wall for 5 minutes. Plug it directly into a wall outlet, not a power strip. Try turning it on. If the code returns, the internal power supply (PSU) board has failed. IF THAT DIDN'T WORK A failed main board can also cause this code. You must open the TV and test for DC voltages from the PSU. If all voltages are present, the main board (EAX67177504) is the cause. HEADS UP Do not ignore this code. Repeated attempts can damage other boards. This is a component-level repair. Call a technician if unsure.

Question 3

i get no sound from external devices connected to the hdmi ports, tv speakers work

Accepted Answer

DIAGNOSIS The TV's Sound Output is set incorrectly for HDMI. It's trying to send audio back out. FIX Press the Settings button on the remote. Go to All Settings > Sound > Advanced Settings > Sound Out. Change it from 'HDMI ARC' or 'External Speaker' to 'TV Speaker'. IF THAT DIDN'T WORK The HDMI port may be set to PCM only. Go to All Settings > General > Devices > HDMI Settings > HDMI Deep Color. Turn it OFF for the problem port. Also check 'Digital Sound Out' is set to PCM. HEADS UP If using a soundbar on HDMI 2 (ARC), you must set Sound Out to 'HDMI ARC'. For other HDMI ports, use 'TV Speaker'.

Question 4

the tv won't connect to my 5ghz wifi, only finds the 2.4, my other devices work fine

Accepted Answer

DIAGNOSIS The TV's wireless module has weak reception or a driver issue. It cannot see certain 5GHz channels. FIX Log into your router's settings. Change your 5GHz WiFi channel to a lower one, like 36, 40, or 44. Save and reboot the router. Then on the TV, go to Network > Wi-Fi Connection and scan again. IF THAT DIDN'T WORK The TV's WiFi antenna connection inside the cabinet may be loose. This requires opening the TV to check the white antenna cable connection on the main board. HEADS UP Some routers use DFS channels (52-144) which this TV often cannot detect. Stick to standard channels below 48.

Question 5

how do i clean the screen on this lg without ruining it? the manual is scary

Accepted Answer

DIAGNOSIS You are right to be careful. The screen has a delicate anti-glare coating. Standard cleaners will strip it. FIX Use a dry, soft microfiber cloth. Gently wipe in one direction. For fingerprints, dampen a second microfiber cloth with distilled water only. Wring it out completely. Wipe gently, then immediately dry with the first cloth. IF THAT DIDN'T WORK For stubborn spots, use a 50/50 mix of distilled white vinegar and distilled water. Dampen the cloth, never spray the screen. Dry immediately. HEADS UP Never use window cleaner, alcohol, ammonia, or abrasive cloths. Do not press hard. The coating cannot be replaced.

Question 6

webos is so slow and laggy on this tv, menus take forever to load, is mine broken?

Accepted Answer

DIAGNOSIS Not broken. The built-in storage is nearly full from app cache and updates. The processor bogs down. FIX Go to All Settings > General > System > Storage. Check used space. Select 'Delete Viewing History' and 'Delete Voice Recognition Information'. Then go to All Settings > Support > Device Care > Optimize Now. Run it. IF THAT DIDN'T WORK Perform a soft reset. Unplug the TV from the wall for 60 seconds. Plug it back in. This clears the system memory. HEADS UP Do not do a factory reset unless necessary. You will lose all logins and settings. The storage will fill up again in a few months. Repeat the cleanup.

Question 7

tv makes a loud clicking sound from the back every few minutes, it's driving me nuts

Accepted Answer

DIAGNOSIS That's the plastic housing expanding and contracting from heat changes. The mounting clips or screws are too tight. FIX Unplug the TV. Lay it screen-down on a soft blanket. Remove the back cover. Check all screws along the perimeter. Loosen each one a quarter-turn, do not remove them. This allows the plastic to flex without popping. IF THAT DIDN'T WORK The sound may be coming from the power supply board. A failing capacitor can cause a rhythmic tick. Inspect the PSU board for bulging tops or leaking electrolyte. HEADS UP Do not overtighten screws when reassembling. Snug is enough. Cracked plastic is not repairable.

Question 8

my new lg 43ur7300psa just shows a black screen with sound when i turn it on, picture never comes on

Accepted Answer

DIAGNOSIS The backlight is working but the LCD panel is not receiving a proper signal. The main board or T-Con board is likely faulty. FIX Unplug the TV. Remove the back cover. Locate the T-Con board. It's a smaller board connected to the LCD panel ribbons. Carefully reseat both ribbon cable connectors. Reassemble and test. IF THAT DIDN'T WORK The main board is defective. You need a replacement main board (part number EAX67177504 for this model). HEADS UP The T-Con board is fragile. Do not touch the gold connectors. Discharge static from your hands first.

LG 43 inch 43UR7300PSA 4K Smart TV

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