Danny can you please help me as well. Having same issues. Screen is mirrored and upside down. Works fine on first load screen and then goes wonky. I bought and replaced the tcon board yesterday with the exact brand new tcon board as the original down to all the numbers and everything. It worked for two movies and now this morning it is back to its broken ways. Could it be the power board?
Device model: 55s401
device ID: cn500n917477
software: 4209-30 (hard to see)