Hi everyone !
I've registered here hoping someone will be able to help me to get the best signal out of a very early AES (5635) I just bought.
When I got it, it had a bad RGB signal, with checkerboard pattern scrolling left then right. I changed on my scart cable the Sync Pin to Pin7 instead of 3, and also replaced the 100uF capacitors by 470uF ones, with no luck.
Plus, with my OSSC, my TV (LG OLED C9) goes dark randomly (OSSC led stays green though, so it seems it's not losing sync), while with the same settings on my RGB-fixed AES 3-6 the picture is perfect and the screen never goes dark. Switching to Line 5x seems to make this problem disappear though, but still it doesn't make sense that the two behave differently.
I've then decided to do a RGB Bypass to see if composite is the culprit, but since tutorials for 3-1 revisions are nowhere to be found on the internet, it took me a while to find what to do. I still managed to do it by looking at the schematics and now the checkerboard pattern is gone, victory !
Well... sort of victory ? Now when looking at plain colors (not full black or full white), there is some sort of "noise". I don't know if my scart cable is an original one (I don't think so), maybe it is the culprit in there. When I look at my board, it has a capacitor soldered on a resistor, and I can't find it on other boards pictures online. I know from the seller who bought it new that it was sent to SNK/Guillemot for repair, maybe this was added then ?
Here are some pictures of the board (pics have been taken after the cap replacement, and before the RGB bypass) :
I hope someone will be able to help me getting rid of this noise, and more importantly of the screen randomly going black as if the game was changing resolution (it is not). I've tried KOF95, Super Sidekicks 2 and Magician Lord (all original) and got this problem with all of them.
Thank you !
I've registered here hoping someone will be able to help me to get the best signal out of a very early AES (5635) I just bought.
When I got it, it had a bad RGB signal, with checkerboard pattern scrolling left then right. I changed on my scart cable the Sync Pin to Pin7 instead of 3, and also replaced the 100uF capacitors by 470uF ones, with no luck.
Plus, with my OSSC, my TV (LG OLED C9) goes dark randomly (OSSC led stays green though, so it seems it's not losing sync), while with the same settings on my RGB-fixed AES 3-6 the picture is perfect and the screen never goes dark. Switching to Line 5x seems to make this problem disappear though, but still it doesn't make sense that the two behave differently.
I've then decided to do a RGB Bypass to see if composite is the culprit, but since tutorials for 3-1 revisions are nowhere to be found on the internet, it took me a while to find what to do. I still managed to do it by looking at the schematics and now the checkerboard pattern is gone, victory !
Well... sort of victory ? Now when looking at plain colors (not full black or full white), there is some sort of "noise". I don't know if my scart cable is an original one (I don't think so), maybe it is the culprit in there. When I look at my board, it has a capacitor soldered on a resistor, and I can't find it on other boards pictures online. I know from the seller who bought it new that it was sent to SNK/Guillemot for repair, maybe this was added then ?
Here are some pictures of the board (pics have been taken after the cap replacement, and before the RGB bypass) :
I hope someone will be able to help me getting rid of this noise, and more importantly of the screen randomly going black as if the game was changing resolution (it is not). I've tried KOF95, Super Sidekicks 2 and Magician Lord (all original) and got this problem with all of them.
Thank you !
