I have an NAD 7250PE. I get no sound out of the speakers and no sound out of the headphone jack BUT the inputs and tape out work. Anyone have ideas on what might be the problem?
Audio Players & Recorders - NAD - C720BEE Receiver
Copyright © 2024 QA.XPDF.PUB - All rights reserved.
Answers & Comments
The final output stage of the amplifier section is not working. This can be cased by a power supply problem or defective output transistors to name a few possibilities. Without seeing the actua unit and taking a few measurements inside, I can't say for sure. These are decent units and have fairly common output designs. Expet a parts cost up to $50 or so for this repair. (It can be less if just the power supply area)
Dan
As much as I'd like to guide you through, this is not the unit for the first try. While the design is relatively straight forward, it is not the simplest. You will need a meter that has a diode checker. Check the output transistors for a shorted condition (this is the most common). The outputs will be a to3 case style (I think) and will be attached to the heatsink. There should be 4, two for each channel.
Your best bet is to locate a book on stereo repair (there are a number of them) and follwo hte guidelines there.
I don't have the schematics for your unit, so I really can't give you specifics.
Good luck,
Dan
Awesome, I think this is enough for me to get my hands dirty for now. Thanks a lot for your help, I really appreciate it.