In this video number {772} TB3240 Digital Thermostat repair. I demonstrated how to repair Honeywell TB3 Series TB3204W Communicating Thermostat repair. its problem was that it was not turning on. during troubleshooting process i found 34063 based buck regulator based circuit malfunctioned. a ceramic capacitor was short circuited which caused to disconnected the output line and a smd diode which was separated from the BCB pads, i found it near PCB and while testing it found short circuit. after repairing the broken PCB track, installing a fast rectifier and a ceramic capacitor. it turned on and started working
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