The Power and Status lights are both lit solid blue, which normally indicates standard operation. The lamp light appears to be a "dim blue," though the lamp itself is clearly firing as light is hitting the wall.

I have already tried:

1. Hard resetting the unit by unplugging it for over 60 seconds.

2. Checking the physical A/V Mute slide to ensure it is fully open.

3. Cycling through sources using the physical buttons.

4. Pressing the Menu button multiple times (no menu appears on the screen).

I do not have the remote control for this unit. Is this likely a failure of the main board, a stuck Auto Iris, or a disconnected internal ribbon cable? Are there any button combinations I can use to force a factory reset without a remote?