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Old 4th July 2011, 09:22 PM   #1
Bood is offline Bood  United States
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Default Need help identifying SMD device for NAD T765 receiver. thx

NAD T765 receiver in protect mode. Don't have the schematic. There were 3 bad devices, but at the time i only found 2, so when i replaced the two outputs, it went up in smoke. Then after a little more digging, found an SMD device (think transistor) that is feeding the outputs is also shorted. It looks like a G1 with a sideways U. Maybe a MMBT5551 (2N5551 leaded equiv). Any advice would be a great help. Attached a closeup photo.
thx
paul
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Old 4th July 2011, 10:45 PM   #2
jony is offline jony  Poland
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Q5612 work as a VBE multiplet (set the output stage idle current), and yes you right Q5612 is a MMBT5551 NPN BJT
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Old 5th July 2011, 10:45 PM   #3
Bood is offline Bood  United States
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Thumbs up THX

Hello Jony,
thanks for the fast response, you are a lifesaver. that is exactly the info i needed.
regards
paul
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