MiSTer FPGA Forum

Xbytez wrote: ↑Fri Aug 19, 2022 8:05 pm Are you sure you are not just hearing the high frequency noise generated by your flyback transformer inside the monitor?

I think that it could be the answer ... !
perhaps the flyback on that models (1084, 1081) makes that noise in certain situations.

Hello again, I have tested another time, and the sound doesn't seems to come from the speakers. If I test with Mister without SD CARD, it sounds ("sssshhhhhhhh") all the time. No differences if I manipulate the speakers control. I have tested also with the volume of the integrated speakers at minimum , (when I start mister sound; and then...

Hello , Thanks for all your replies !

I forgot to comment that I use a PAL monitor, with RGB-SCART , directly from Mister, as I do with my other CRT displays

I understand that is normal then, as the user C-R-T said in their message , and it's due the amplifier

Hello Triangle, thanks for your message

No, I usually use CRT with RGB, or VGA ,
I also tried the original mister.INI

Hello ! I have a 1084 Commodore monitor that make noise when changing core, When I change a core I can hear some like "shhhh shhhhh" When the core is loaded, the noise disappear. I also have another 1084, and one 1081 Commodore monitor , that makes the same noise. My other CRT's (monitor or TV's) works normally. So it has to be something ...

Hello! I have a problem (I don't remember exactly when it started, but some time ago). Before, when I changed a core, it was fast. Very fast. Inmediatly. Now, it takes several more seconds. Perhaps 5-6 seconds more. I have tried with another SD card (last update 2021) and it works fast (as before), so it has to be some configuration that has change...