Yesterday there were no problems, except by connecting my PS2 directly in my internet router via lan cable… and horizontal lines appeared. It seems that is an external problem, and not with the OSSC itself. This is so strange, ‘cuz I’ve tested without lan connection a couple days ago and the noise was there. I bought a scart cable and another PSU for OSSC, and when it arrives I’ll update here. Also, I bought OSSC in a local store, and I don’t think right now that’s a OSSC faulty. Thanks for the support!
Just an update: the problem was fixed by not using my cheap component cables.