Hi Gareth,
This model no. has a built-in "
self diagnostic software" that can be access to narrow down where the fault came from.
How to enter to self diagnostic screen display.
1. Turn on the main power switch of the TV and enter into
standby mode.
2. Press the following sequence of buttons on the remote control.
Self diagnostic error menu will be display. It has an error code no. with the corresponding numerical digit "
0" means no fault detected or "
1" fault has been detected. See sample picture below.
Please let me know the result to assist you further.
We have the same problem but if you set the Power Save option to On it works fine.
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