Reply To: OSSC PRO settings for Atari 1040STe
Hi Felipe
ST and STe scart cables are notorious for sync issues where scart cables are concerned…
This is because they don’t natively have 5 or 12 Volts on the monitor connector which is usually used by other systems to derive the Fast blank switching voltage on scart Pin 16 which TV’s need to be informed to use RGB signalling instead of composite video.
Instead a “hack” which works most of the time was used using the Vsync signal and a 10uF capacitor to ground to provide a “rough” blanking voltage.
And Yes commercial cables used this.
The OSSC and Pro have no need for a fast blanking signal.
If you don’t mind trying an experiment…
Open your scart plug and look at pin 16… if it is connected by a wire then snip it.
Please double check your numbering….I cannot be held liable.
By all means upload a picture or 2 of your scart so we can advise further.
Most ST scart cables have
150R inline RGB resistors
330R inline CSYNC (pin20) resistor
