Hello, I have an old TC4200 that recently appears to have given up the ghost. When switched on the power light flashes orange briefly and It refuses to boot up. I've tried a replacement battery and power supply, I've even gone as far as purchasing a docking station in case the rear power socket was damaged. It's an old machine but my budget is a bit tight at the moment so I'd like to get it running again if a fix would be possible. Thanks. G