power board forced start it is a Technic used to start a power board without being connected to main board, this Technic is applied on LG TVs with 18 pins, Power on, Driver on signals and standby voltage are tied together with a wire, this help you to figure out if power board is able to respond to the command signals from main board, at this time it turns on back light, out put voltages like 24V and 12V, if power board does it well suspect or change main board.
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22 май 2023
