Quote:I don't think this is quite correct. The electronics in the Sony CRT doesn't directly interface with HDMI; it has an HDMI card that converts to analogue then the analogue is converted back to digital again. So the quality by plugging directly into the component will usually be better unless there are HDCP issues. The HDPT turns off processing that is done regadless of input type - HDMI, S-video or even RF. By messing with the service menu I'm guessing some kind of processing was turned on that introduced lag aside from HDPT. Try downloading the service manual and have a look at the factory defaults of the values that deal with processing. It is always a good idea to write down the TV's original settings before changing anything.
I started by looking up the input lag problem. Through the power of AVSF, I learned that the HDMI's digital processing can be converted to an analog signal by changing the service menu option 'HDPT' from 1 to 0, eliminating input lag caused by digital processing.