@duckmcquack I just checked and I do not have a schematic for your TV. Seems like they are not available at my regular places. Anyhow, I also checked on common issues for your main board. Amazingly it is NOT readily available. If you do find it, it is very expensive even the used ones. That is usually a pretty good indicator that there are issues with it. People buy up the "good" ones for repair purposes.