Chosen Solution

The clock is to bright for me to sleep, it lights up the entire room. I like to sleep in a somewhat dark room. Help.

Press the Snooze/Brightness bar. There are 3 brightness levels.

There could be a couple solutions to this problem. One of which may be to replace the screen with a darker, tinted (to your preference) screen. Here is a link to the troubleshooting guide so that you may check into the repair guide for this issue. [Sony ICF-C1T Troubleshooting Repair]