Chosen Solution
Mitsubishi TV LT-46265 has audio but no picture. Can use the remote to change input (blind change, since screen is blue or black). Replaced T-con but that didn’t resolve the issue. Any ideas? Red blinking light on LED board:
@smitty72 lets try a reset first just to make sure it is hardware related: Name: A/V Reset, all inputs When to use :When the audio or video performance or settings for more than one input seem to incorrect. How: While viewing the TV, press the front panel buttons + <VOL I added your image with annotations so that we all speak the same language and avoid confusion down the line.