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LG 42LB6500-TH Software update issues - unable to update to 05.05.70 via internet/usb

LG user 42LB6500-TH

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LG user 42LB6500-TH

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LG 42LB6500 is having trouble with display. Fire TV stick, prime video and set top box video are not getting displayed and only audio works. It looks like this is a software issue (current version 05.05.55) and I am not able to fix it by updating software to 05.05.70 via internet (image below) or through usb. Please advice.

 

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LG user 42LB6500-TH
LG user 42LB6500-TH

Yes - I tried USB as software update was not happening via networks. The disk was not recognized and after multiple attempts, I gave up. I called LG customer care and they said this is a mother board

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@LG user 42LB6500-TH Just to clarify: 1) are you using an AV Receiver for sound/surround sound?  2) Did any of the input devices USED to work before, or has the "problem" just occurred?

3) Did the issue start just after the update to  05.05.55?

4) Does the Live TV, or  other APPS on the TV work correctly for sound and video?

SUGGESTION: Remove all devices, unplug the TV from mains power, hold its power button for 30 seconds, plug TV back to power, then check each input device individually, either using the HDMI ARC, or an input for DVD players, sometimes marked "BD". If one device works in one socket, experiment with the other one to see which input works best.

If you DO use an AV Receiver amp, then you will need to plug those devices into the input sockets of your AVR, and  retest (but bear in mind that not all units are HDMI-CEC compliant, so you may need to turn HDMI-CEC off for those devices, and the AVR HDMI Port.

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LG user 42LB6500-TH

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Yes - all the devices used to work. It is only after the update to 05.05.55, set top box, fire tv stick and chromecast started failing and only dark screen is displayed. I am not able to update the firmware as well to fix this issue.

No app is working for video. Is it an issue with refresh rate between TV and devices?

 

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@LG user 42LB6500-TH  Refresh rate is ONLY to do with screens, devices connected should have no bearing on the issue.

Did you try an empty USB stick, downloading the ZIP file from the LG site on your PC/Laptop, then unzip the file into the ROOT of the USB stick (i.e. NOT in a folder), then following the USB firmware install steps?

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