Doom9's Forum - View Single Post - S-Video performs worse than Composite

SpOeK! · 13th October 2014, 17:07

One of the VCR that I'm using it's a Funai 25A-750. Following the same idea of finding the logic in charge of the Y/C mix and maybe intercepting the signals before this mix was carried on I've been able to get the service manual.

I've located the IC301 (LA71750EM) in charge of all these tasks. One pin (25) seems to carry "PB C OUT (Playback Chroma out?)" but sadly I still haven't found a similar pin for the Luminance. Best chance right now is pin 46 which is dubbed VCA-OUT but I'm just guessing without the proper datasheet.

13th October 2014, 17:07	#20 \| Link
SpOeK! Registered User Join Date: Sep 2014 Location: Spain Posts: 6	One of the VCR that I'm using it's a Funai 25A-750. Following the same idea of finding the logic in charge of the Y/C mix and maybe intercepting the signals before this mix was carried on I've been able to get the service manual. I've located the IC301 (LA71750EM) in charge of all these tasks. One pin (25) seems to carry "PB C OUT (Playback Chroma out?)" but sadly I still haven't found a similar pin for the Luminance. Best chance right now is pin 46 which is dubbed VCA-OUT but I'm just guessing without the proper datasheet.