How can I Replace CMOS/Clock Battery?

You're correct that the CMOS battery in your Sony Cyber-shot DSC-W50 is responsible for keeping the date and time settings. If it's failing to retain those settings when the main battery is removed, replacing the CMOS battery is likely the right solution.

Here’s a detailed, step-by-step breakdown for replacing the CMOS battery in your Sony Cyber-shot DSC-W50:

• Precision Phillips screwdriver set (size #00 or #000)
• Plastic pry tool (to avoid scratching or damaging components)
• Tweezers (for handling small parts)
• Replacement CMOS battery (likely CR2025 or CR2032, but verify before purchasing)

• Turn off the camera and ensure the lens is retracted.
• Remove the main battery from the compartment and the memory card.
• Work on a flat, clean surface with good lighting. Have a tray or magnetized mat to hold screws.

• There are 4-6 screws holding the outer casing together:
  • 2 screws on the left side (where the hand strap attaches)
  • 2 screws on the right side
  • 2 screws at the bottom
• Using the precision Phillips screwdriver, remove all screws and keep them organized (some screws may be different lengths).

• Insert the plastic pry tool between the front and back plastic panels.
• Gently work your way around the edges, applying light pressure to pop the back cover off.
• Note: Be careful not to damage the LCD ribbon cable, which is attached to the back panel.

• In some models, the LCD panel might block access to the CMOS battery.
• If so, you will need to:
  • Disconnect the ribbon cable for the LCD screen by gently flipping up the black or white clip securing it to the mainboard.
  • Set the LCD screen aside carefully.
• If the LCD screen is not in the way, leave it connected and proceed to the next step.

• Look for a small coin-shaped battery on the motherboard (typically near one of the edges).
• It may be held by a metal clip, soldered on, or in a small plastic holder.

Note: In some cameras, the CMOS battery may be wrapped in plastic or connected with wires to the motherboard (less common).

• If it's held by a clip, use the plastic pry tool or tweezers to carefully pop the battery out.
• Pay attention to the battery orientation (positive and negative sides).

• Insert the replacement CMOS battery in the same orientation as the old one.
• Ensure it snaps into place securely.

• If you removed the LCD screen, reconnect the ribbon cable by sliding it into the connector and flipping the clip down to lock it.
• Carefully place the back panel back onto the camera, ensuring all clips snap into place.
• Reinsert all screws into their original locations, ensuring they are snug but not over-tightened.

• Reinsert the main battery and power on the camera.
• Check if the date and time settings are now retained even after the main battery is removed.
• If the camera retains the settings, the CMOS battery replacement was successful.

• If everything works correctly, your camera should now retain the date and time settings when the main battery is removed.
• If it still doesn’t work, there may be another underlying issue, or the replacement battery might not be working.

• Be gentle when working with the internal components. Avoid using metal tools to pry things open near sensitive electronic parts to prevent shorting.
• If you're unsure about disassembly, consider recording or photographing each step so reassembly is easier.