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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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NAD 7225PE Stereo Receiver - FM Sound Died
My trusty NAD 7225PE receiver recently ran into problems. While listening
to an FM station, and for no apparent reason, I ended up with static. I tried tuning several different stations, with no luck; all static. All other sources (i.e. CD and AM) work fine. Interestingly, I selected FM today, and got a few minutes of radio before it went back to static. Let it set for 45-60 min, selected FM and it worked again for a while. I am guessing a dried out capacitor somewhere between the FM antenna in and the audio source selector. Anyone seen (heard) this problem before? Any ideas on how to trace this down quickly? Or is it time to think about a new receiver? Thanks!! Don |
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NAD 7225PE Stereo Receiver - FM Sound Died
First check to see if there are proper voltages in the front end. Since you
have static, I would suspect that the RF section is working, but the local oscillator is most likely not working. In various types of receivers I have had it go defective, more so than support components. In the older receivers, it is a transistor. After replacement, if defective, the front end alignment will have to be re-done. -- Greetings, Jerry Greenberg GLG Technologies GLG ========================================= WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm ========================================= "Don" wrote in message nk.net... My trusty NAD 7225PE receiver recently ran into problems. While listening to an FM station, and for no apparent reason, I ended up with static. I tried tuning several different stations, with no luck; all static. All other sources (i.e. CD and AM) work fine. Interestingly, I selected FM today, and got a few minutes of radio before it went back to static. Let it set for 45-60 min, selected FM and it worked again for a while. I am guessing a dried out capacitor somewhere between the FM antenna in and the audio source selector. Anyone seen (heard) this problem before? Any ideas on how to trace this down quickly? Or is it time to think about a new receiver? Thanks!! Don |
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NAD 7225PE Stereo Receiver - FM Sound Died
I think maybe I'd look more for bad solder connections.
Mark Z. -- Please reply only to Group. I regret this is necessary. Viruses and spam have rendered my regular e-mail address useless. "Don" wrote in message nk.net... My trusty NAD 7225PE receiver recently ran into problems. While listening to an FM station, and for no apparent reason, I ended up with static. I tried tuning several different stations, with no luck; all static. All other sources (i.e. CD and AM) work fine. Interestingly, I selected FM today, and got a few minutes of radio before it went back to static. Let it set for 45-60 min, selected FM and it worked again for a while. I am guessing a dried out capacitor somewhere between the FM antenna in and the audio source selector. Anyone seen (heard) this problem before? Any ideas on how to trace this down quickly? Or is it time to think about a new receiver? Thanks!! Don |
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NAD 7225PE Stereo Receiver - FM Sound Died
Don,
I've got the follow note written for the 7225: FM problems: bad ceramic caps: C909 (may be removed) C905 ).01 disk (0.02 KO) C912 0.047 R920 150K (was originally 4k7) if tuning voltage inoperative (high) at cold turn on. C110 and 111 0.047 at LA 1265 IC. C909, C905 and C912 should be replaced on any unit with FM problems. All that said, you must first make sure that the basic power supplies are in good working order, and I recall some soldering problems in the front end of some NAD models, especially on coils, that might need attention. BE CAREFUL in the front end! Realignment may be needed after working on the front end that requires a good FM generator, so that is the last thing I'd mess with, unless you've got a full service bench available. Regards, Tim Schwartz Bristol Electronics Don wrote: My trusty NAD 7225PE receiver recently ran into problems. While listening to an FM station, and for no apparent reason, I ended up with static. I tried tuning several different stations, with no luck; all static. All other sources (i.e. CD and AM) work fine. Interestingly, I selected FM today, and got a few minutes of radio before it went back to static. Let it set for 45-60 min, selected FM and it worked again for a while. I am guessing a dried out capacitor somewhere between the FM antenna in and the audio source selector. Anyone seen (heard) this problem before? Any ideas on how to trace this down quickly? Or is it time to think about a new receiver? Thanks!! Don |
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THANKS EVERYONE! -> NAD 7225PE Stereo Receiver - FM Sound Died
"Don" wrote in message nk.net... My trusty NAD 7225PE receiver recently ran into problems. While listening to an FM station, and for no apparent reason, I ended up with static. I tried tuning several different stations, with no luck; all static. All other sources (i.e. CD and AM) work fine. Interestingly, I selected FM today, and got a few minutes of radio before it went back to static. Let it set for 45-60 min, selected FM and it worked again for a while. I am guessing a dried out capacitor somewhere between the FM antenna in and the audio source selector. Anyone seen (heard) this problem before? Any ideas on how to trace this down quickly? Or is it time to think about a new receiver? Thanks!! Don |
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