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Questions & Answers
What does error code AOO mean on a Lifesource Model ua-767 Plus 30 mean
A00 (or AOO ?) - it's not error code, device just shows it have no historical measurement data (which is ok, if batteries were replaced). Sometimes A00 is followed by short attempt to pump air and shutdown, so it might be taken as error code. Replace all batteries with new ones and your device will work again.
556ftr it shut off and has no power....no lights to flash codes
The main power regulator circuit [SMPS circuit] is faulty. If you wish to get some details; check the sites linked here.
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault. Search the site by type in the Brand Name of your set, in its search bar at the right side column, and press enter. See it in by Webview with mobile or by desktop. Mobile View has no search box. Screen-shots to defective LCD panels are given. You can see and compare to that to your TVs', and can make sure about the fault to an extent.
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