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#1
Posted to rec.audio.tech
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NAD 7100 issue
Just purchased a NAD 7100 receiver and must say its a great sounding
piece, very smooth and natural sounding but I have noticed a slight problem with the speakers connected to "A" vs "B". A set of speakers connected to "A" wont come on (no sound at all) when the receiver is first turned on unless the volume control is turned up to about ten o'clock and then all of the sudden it will kick in and stays working fine at any level. Speaker connection "B" works just fine so I have been using "B" for now. Im using 8 ohm speakers with the setting at 8 ohms in the back of the receiver. Is this a typical issue with these receivers? Advice appreciated, thanks. Gil |
#2
Posted to rec.audio.tech
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NAD 7100 issue
Check the protection relay. It may need to be replaced.
-- JANA _____ wrote in message ups.com... Just purchased a NAD 7100 receiver and must say its a great sounding piece, very smooth and natural sounding but I have noticed a slight problem with the speakers connected to "A" vs "B". A set of speakers connected to "A" wont come on (no sound at all) when the receiver is first turned on unless the volume control is turned up to about ten o'clock and then all of the sudden it will kick in and stays working fine at any level. Speaker connection "B" works just fine so I have been using "B" for now. Im using 8 ohm speakers with the setting at 8 ohms in the back of the receiver. Is this a typical issue with these receivers? Advice appreciated, thanks. Gil |
#3
Posted to rec.audio.tech
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NAD 7100 issue
Are there speaker relays as well to consider?
Thanks for the info, Gil On Jul 7, 2:58 am, "JANA" wrote: Check the protection relay. It may need to be replaced. -- JANA _____ wrote in message ups.com... Just purchased a NAD 7100 receiver and must say its a great sounding piece, very smooth and natural sounding but I have noticed a slight problem with the speakers connected to "A" vs "B". A set of speakers connected to "A" wont come on (no sound at all) when the receiver is first turned on unless the volume control is turned up to about ten o'clock and then all of the sudden it will kick in and stays working fine at any level. Speaker connection "B" works just fine so I have been using "B" for now. Im using 8 ohm speakers with the setting at 8 ohms in the back of the receiver. Is this a typical issue with these receivers? Advice appreciated, thanks. Gil |
#4
Posted to rec.audio.tech
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NAD 7100 issue
wrote:
Just purchased a NAD 7100 receiver and must say its a great sounding piece, very smooth and natural sounding but I have noticed a slight problem with the speakers connected to "A" vs "B". A set of speakers connected to "A" wont come on (no sound at all) when the receiver is first turned on unless the volume control is turned up to about ten o'clock and then all of the sudden it will kick in and stays working fine at any level. Speaker connection "B" works just fine so I have been using "B" for now. Im using 8 ohm speakers with the setting at 8 ohms in the back of the receiver. Is this a typical issue with these receivers? Advice appreciated, thanks. Gil Gil, The relays in this unit are a common problem. They do both protection and speaker switching, one for speaker A and one for speaker B. A good choice for replacement is the Omron G2R-24-DC24 available from Digikey (www.digikey.com their part number Z748-ND) or Mouser (www.mouser.com, their part number 653-G2R-24-DC24) and I'm sure other vendors, and are not that expensive. This Omron relay is a sealed type and less likely to go bad again. It has 2 extra pins that you will have to cut off before installing it. Which 2 pins are obvious when you compare it to the old relay. Unfortunately, getting to the relays to change them is a pain. they are just in-board of the main power transformer and you can see them from the top, but the connections are covered over by the plate that mounts the main transformer. I take a lot of the unit apart so that I can slide the main transformer mounting plate out of the way and get to the relays. DON'T BE CHEAP - CHANGE BOTH RELAYS (E601 and E602) at the same time so you don't have to deal with it again for many years. Of course you could just used the speaker B connections, until that relay starts to go bad. Regards, Tim Schwartz Bristol Electronics |
#5
Posted to rec.audio.tech
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NAD 7100 issue
JANA wrote:
Check the protection relay. It may need to be replaced. The relay feeds both A and B speaker switches. There is a chance that the "A" speakers are routed through the headphone jack - I had an NAD integrated amp that was this way. The OP could try inserting and pulling out a set of headphones and see if this clears the problem temporarily... Maybe a problem with the speaker switches ( the 7100's were fairly notorious for dirty controls and switches, by the way) or solder connections associated with the speaker terminals... Mark Z. |
#6
Posted to rec.audio.tech
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NAD 7100 issue
Tim Schwartz wrote:
wrote: Just purchased a NAD 7100 receiver and must say its a great sounding piece, very smooth and natural sounding but I have noticed a slight problem with the speakers connected to "A" vs "B". A set of speakers connected to "A" wont come on (no sound at all) when the receiver is first turned on unless the volume control is turned up to about ten o'clock and then all of the sudden it will kick in and stays working fine at any level. Speaker connection "B" works just fine so I have been using "B" for now. Im using 8 ohm speakers with the setting at 8 ohms in the back of the receiver. Is this a typical issue with these receivers? Advice appreciated, thanks. Gil Gil, The relays in this unit are a common problem. They do both protection and speaker switching, one for speaker A and one for speaker B. A good choice for replacement is the Omron G2R-24-DC24 available from Digikey (www.digikey.com their part number Z748-ND) or Mouser (www.mouser.com, their part number 653-G2R-24-DC24) and I'm sure other vendors, and are not that expensive. This Omron relay is a sealed type and less likely to go bad again. It has 2 extra pins that you will have to cut off before installing it. Which 2 pins are obvious when you compare it to the old relay. Unfortunately, getting to the relays to change them is a pain. they are just in-board of the main power transformer and you can see them from the top, but the connections are covered over by the plate that mounts the main transformer. I take a lot of the unit apart so that I can slide the main transformer mounting plate out of the way and get to the relays. DON'T BE CHEAP - CHANGE BOTH RELAYS (E601 and E602) at the same time so you don't have to deal with it again for many years. Of course you could just used the speaker B connections, until that relay starts to go bad. Regards, Tim Schwartz Bristol Electronics And I had previously wrote: "The relay feeds both A and B speaker switches..." I'm going to defer to Tim on this one - he works on lots more NAD's than I do and would be the resident NAD expert in these parts. Mark Z. |
#7
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Quote:
Newbie here, I too have a 7100 that just stopped working at all. I used to have issues with one channel, and now both on both A + B. I just got some relays. I need some solder wick before I attempt this. I am a little unsure where to unsolder. Can you guys tell me how many pins there are and if they are in any pattern, say two on each end of the relay? Thanks RiverAudio |
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