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Introduction
The circuit board is a very important part of the A158w-1 Casio Watch. If your watch is not turning on, there is a possibility that the circuit board is damaged and needs replacing. Use this guide for a step-by-step of how to replace a faulty A158w-1 Casio Watch circuit board.
The circuit board allows electricity to flow from the battery (power source) to the LCD screen. If the circuit board is damaged, the watch will not turn on/display time. A faulty circuit board will most likely have cracks, scratches, or bulges.
Before using this guide, test new batteries on the watch. If the battery is running low, the watch will not display correctly or turn on either.