This is the "audio amplifier" section of the clock. Most schematics use a dual op-amp (like TL082) for input buffering, followed by a (like TDA2030 or LM1875).
The numbers are squashed on one side. Fix: This is a DC offset error. Look for a capacitor in series with the input signal (C1 on most schematics). Replace it. If that fails, one of your power supply rails (+12V or -12V) is missing. Crt Clock Schematic
In the mid-20th century, CRTs were the gold standard for visualizing electrical signals. Unlike modern LED screens that light up fixed pixels, a CRT uses an electron gun to fire a beam at a phosphor-coated screen. By manipulating this beam with magnetic or electrostatic deflection plates, scientists could "draw" waves in real-time. As these tubes became obsolete, hobbyists realized they could use this "drawing" capability to create vector graphics, including the hands and numbers of a clock. The Core Schematic: Bridging High and Low Voltage This is the "audio amplifier" section of the clock