Short Atari 520ST vsync problem

[commander]

I am a fan of the good old RGB signal via a CRT.
Does there exist newer iterations of the shifter (sorry for asking, lag of knowledge in ST World).
When I check my Atari 1040STF the picture looking greates and without "jailbars".
It is possible to try the shifter from the 1040STF in the 520ST ... ?
Thanks

[exxos]

You can swap shifters. But syncs are generated by GLUE. General noise is inherent on the PCB.

[Steve]

I am a fan of the good old RGB signal via a CRT.
Does there exist newer iterations of the shifter (sorry for asking, lag of knowledge in ST World).
When I check my Atari 1040STF the picture looking greates and without "jailbars".
It is possible to try the shifter from the 1040STF in the 520ST ... ?
Thanks

Yes I already went down the path of trying to reduce analogue noise without any luck. I did everything you mentioned including removing the modulator. I also re-capped the board with the best quality caps I could get. I noticed that different revisions on the rear of the motherboard have different variations of capacitors going between certain shifter lines and ground. I tried out all different configurations without luck (apparently these were Atari's attempt to fix noise) So sorry to say man I don't think you'll find a magic solution, but if you do please let us know :)

[commander]

in the videogames world a lot of people are using Texas Intruments analog RGB Amplifier and bypasses the RGBS Signals.

eg. THS 7314 or better THS 7374
Look here: https://voultar.com/

Cutting the traces of the RGB and Sync Signals to the "inner" Atari and picking the RGBS Signals directly form the source chips and using the THS amplifier and outputs the signals directly to the A/V Output.

Could this be a solution?

[exxos]

I did extensive tests of all this a few years ago. There was some improvement if you cut the rgb traces and connect the socket direct to the rgb drivers near the shifter. But buffering, improving grounds etc etc its all been tried before. It can be improved, but worthwhile is another question. Your just polishing a turd at the end of the day. If you want the best video then invest in a H5 where all the problems are fixed.

[commander]

Can you explaine in detail what H5 means?
As far as I saw its a 1040STF Revision, when I am understandig it wright.
My goal was to get a cute/small 520ST not the "big" 1040

Thanks for your time and answer

[exxos]

Can you explaine in detail what H5 means

https://www.exxosforum.co.uk/atari/last/REMAKE_INTRO/