Clean those optos first if they are not registering in test mode. I think every TZ on earth has clock problems be it dirty optos or cooked optos. I got mine and had the same problem. Turned out that all it needed was q-tips and alcohol. Even if its just dirty optos, might want to look into the clock board on down the road. The original will probably wind up giving you problems eventually. Man I miss my TZ!! Gotta get another.....