
ESD-safe handling of appliance control boards
Static from your body can damage board components at voltages you can't feel. Ground yourself, keep the new board in its bag until the moment of install, handle it by the edges and put the old board in the same bag for return.
Before you start
- A wrist strap is for static control only; it does not protect you from shock. De-energize the appliance first
Diagnostic steps
Unlock all 5 steps with expected values
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Get lifetime accessOnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.