Sony ICF-C1PJButtons not responding

1. Unplug the device from AC power.
2. If your model has a battery backup, remove the battery (usually a CR2032 or AA/AAA cells).
3. Wait 1–2 minutes.
4. Reinsert the battery (if present) and plug in the device.
5. Check if the buttons respond.

Sometimes blinking digits are a reset signal, and unplugging/resetting may fix it.

• With time, dust or sticky residue can prevent the buttons from registering presses.
• Inspect carefully around each button. If you see dirt or sticky residue, try gently cleaning with isopropyl alcohol and a cotton swab.

Since you already opened the outer cover:

1. Remove the screws on the bottom and/or back of the unit. Keep track of their positions.
2. Carefully separate the top cover. Usually, the buttons are mounted on a plastic membrane sheet that sits on top of the main circuit board.
3. The buttons themselves are often conductive rubber pads. If these pads are misaligned or worn, pressing won’t register.

Important tips while opening:

• Take pictures at each step so you can reassemble correctly.
• Be gentle with ribbon cables—they are fragile.
• Note the orientation of the speaker and projector assembly (if your model has a clock projection).

• With the cover off, locate the rubber button membrane over the PCB.
• Press each pad with your finger or a plastic tool. You should feel a small click.
• If a button is not responding, check the PCB underneath:
  • Sometimes the copper pads are dirty or corroded.
  • Clean lightly with isopropyl alcohol.
  • If pads are worn, you may need to replace the button membrane, which may be sourced from Sony parts suppliers.

• After cleaning and checking the buttons, carefully reassemble the device.
• Plug in and see if the clock stops blinking and the buttons work.

💡 Extra tip: If the buttons are completely unresponsive even after cleaning and pressing directly on the PCB pads, the issue may be internal to the control board, possibly a failed microcontroller or solder joint. In that case, unless you’re comfortable with electronics repair, it might be simpler to use it with a new clock radio.