NAD-T761-avr-cc2 电路图 维修手册.pdf

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1、 Service Information T761 Circuit Change PROBLEM: The power amp gets very hot during continuous operation. CAUSE: Heat sink temperature runs very hot before fan turns on. SOLUTION: Change R5120 from 4k7 to 2k to increase sensitivity of the thermal sensor for the fan to turn on at 85 C. Also change j

2、umper wire J758 to 1N4001 diode on the main board to improve heat dissipation on Q565. J758 is located near R733/R734 390 1/2W resistors. The cathode (white band) should be to the left or heat sink side when looking at the front of the receiver. PRODUCTION: This circuit change has been implemented in production from serial number:G13T76102701 Contact: NAD Electronics International 633 Granite Court Pickering, ON Canada L1K 3K1 Voice: 905-831-0799 FAX 905-837-6357 NADwww.NAD RadioFans.CN 收音机爱 好者资料库