Well, not much time to play with the projector lately. Here is a quick update.
Only a few movies with the temperature probe inside. It seems to run around 30C and climb to 46C after powerdown (as the fan stops cooling it for a little while).
I’ve been thinking about attempting the Solar Cell Gray Scale calibration procedure. This makes use of a ‘cheap’ solar cell and a multimeter to measure the light output and match the three tubes.
Of course, I needed to understand how to set grayscale on the CRT. After much thinking, I realized I had the information in hand. The RGB Adjust .pdf in the files section has everything I need to know.
Careful reading of this resulted in my understanding WHY the Ampro seems to have high brightness and contrast settings. The calibration procedure has the remote control settings set to 95% bright and 95% cont. No wonder you need to run with big numbers to get the ‘right’ image..