sync on luma as sync . Better for LCD or CRT tv?

I've read so much about this sync on luma topic around forums, and decided to give it a try.
I cracked open my RGB scart cable for the playstation 1, swapped the composite cable for luma and tested on my samsung lcd tv. I was amazed by the clarity of the colors and the total brightness, with no checkerboard-like artifacts.
I then tested the same cable on my Philips CRT . Colors remain bright, but I noticed that the picture tends to be brighter than my liking in most of my games, as well there is a minimal image shift to the right, hiding some graphics and text on the far right side of the screen.
Is this how sync on luma is supposed to work on CRT TV's?

 

First, the problem with checkerboarding isn't the different sync types, but instead poor shielding from the composite video line, which then causes the chroma signal to interfere with the RGB lines. The proper way to fix this is to have a well shielded cable where all of the lines are shielded from each other. If using a well shielded cable, using composite video as sync will not give you different results than even CSync, as there is no interference. The only reason to use different sync types in this case is for compatibility. For example, I have to use CSync for everything in my setup since my Extron Crosspoint requires it, even though I am using properly shielded homemade BNC cables throughout.

Using sync on luma or CSync is a bandage since you're not solving the root issue. Since the luma signal has no chroma, then it doesn't interfere as much (regardless of the display used), although you may still notice audio buzz due to interference with the audio line.

Sync on luma is the same thing as composite video, but without the chroma signal, therefore using luma as a sync signal is functionally identical to using composite video as sync. If using an unshielded or not properly shielded cable, you will get better results with using sync on luma on both LCDs and CRTs.

To fix the issue with the CRT, first reduce the brightness in the settings, then go into the service menu to shift the image to the left. You can find out how to enter service mode and what all the settings do in your TV's service manual. Note that you will likely need a remote for the TV to enter and control service mode.

The way I like to calibrate the brightness of my CRTs is I first turn contrast/picture all the way up, then I turn brightness all the way up. I make sure my room is as dark as possible, then I put a pure black 240p image on the CRT. I then turn the brightness down until I cannot see any scanlines. After that, I adjust the contrast/picture to taste.

This sounds more like a calibration issue than anything else. Is this a SCART TV/RGB monitor or an RGB modded TV?

Using different sync types should not impact brightness at all.

 

I went ahead and re-did the whole cable from scratch. I threw away the cable and used a thicker one for the video signal, as well a different cable for the audio signal. At the same time, I did notice that my CRT needed to be calibrated for an optimal brightness setting.
As for the service menu, I had already adjusted the image , but it seems my setting isn't optimal for all inputs.