What is the issue with the 70 inch LG TV where the picture disappears 10 seconds after turning it on, but the sound still works?

To further elaborate on the issue with the 70 inch LG TV:

1. Power reset: Unplug the TV from the power source, wait for a few minutes, then plug it back in. This will reset the TV's hardware and can often resolve the issue.
2. Check the connections: Ensure that all cables and connections between the TV and other devices (such as cable or satellite boxes, game consoles, etc.) are securely connected and in good working order.
3. Update the TV's software: Check the TV's settings to see if there are any available software updates. Installing the latest software update can sometimes resolve hardware-related issues.
4. Seek professional repair services: If the above steps do not resolve the issue, it is best to seek professional repair services from a qualified technician or from LG's customer service. The technician will be able to diagnose the problem and recommend a course of action.

It's important to note that the cause of the issue with the TV can be due to a variety of factors and resolving it may require specialized knowledge and equipment.