exxos's Atari, Amiga & retro forum

fenarinarsa wrote: 16 Nov 2020 17:22

Steve wrote: 16 Nov 2020 10:51 I have a theory it is to do with the RF modulator circuitry causing the interference. But it is just a hunch.

Okay, I'll let you know as soon as I do the patch. I only have RGB STEs without RF modulators so we'll see :)

I suspect the RF circuit is snubbing noise on the signals.. So when its missing, noise is worse..

Normally there are some 33pf caps on all the RGB lines etc.. they are normally right next to the RGB connector.. if they are not there ( I dont think the STE ever had them) .. fit some.. It may well help.


(STFM)

Indeed...

For my information, what are the Lxxx components?

fenarinarsa wrote: 17 Nov 2020 23:47 For my information, what are the Lxxx components?

They are just filters.. a lot of ST's don't even have them fitted.

If you're planning on doing your falcon, I have an almost full set of caps from doing mine a few months back as most caps had a minimum order over the qty needed and where it didn't I bought a few extra so I could have a spare set if anyone needed them. I bought exxos 4,700 Axial cap kit but the rest are decent panasonic ones.... however there's some low value film caps that I couldn't bring myself to use, as despite the fact I could have MADE them fit, they were so much bigger, so I dug about for some electrolytic and used them instead. There's some pics in my thread in this forum.