NAC282 muted for no reason and wouldn't unmute

Check the napsc and hicap dr wiring

Nothing jumps to mind ..that you haven't already done..but at least your dealer can offer his opinion on the issue and why it occurred

Sounds strange but would be best if it did do it again before arrival of the dealer..so he can check things himself..(herself?)

Can you try to enter the programming mode and re-set your 282 to factory settings?

To quote from the manual"

To switch into (or exit from) program mode press and hold the prog key on the remote handset (in preamplifier mode). Program mode is indicated by a flashing indicator on the front panel volume control and the record selection indicators extinguishing.

To restore all programmable settings to the factory defaults press and hold the remote handset disp key while the preamplifier is in program mode. The preamplifier will exit from program mode following this operation.

Thanks for all the suggestions. It hasn't happned again since the first time. I will try the factory reset if it recurs. It still makes me a bit nervous that it happened in the first place. My dealer is due in a couple hours to install and setup my new speakers.

Well, the mute thing has happened again. It did it a couple weeks ago while playing the ND5-XS and again last night while playing the TT. In these two cases it corercted itself without recycling power. I changed inputs back and forth and then after a half minute the mute went off again. I don't know that changing inputs back and forth helped.

In the next week or so I am getting two Fraim stacks so I will be taking everything apart and reconnecting again.

This never occurred before I had my 282/HC/250 off to Naim NA for service and DR, so this has me a bit rattled. What kinds of things cause this to happen? [@mention:1566878603942595]?

I’m afraid I don’t know what might be the cause here. If it’s just been serviced and you have exhausted other possibilities, maybe time to ask the dealer to check it out.

Richard Dane posted:

I’m afraid I don’t know what might be the cause here. If it’s just been serviced and you have exhausted other possibilities, maybe time to ask the dealer to check it out.

OK. Thanks. It would be disappointing if it had to go back again. The shipping alone was really expensive.

I've disconnected everything and connected again, just to make sure it was a doidgy connection of any kind. I leave me Naim powered on all the time (except for ND5) and it has gone hundreds of hours between the unexpected Mute On incidents.

I posted yesterday I had a channel down for no good reason also following my 200/282 service, their first in 12 years of faultless service.

I left everything off overnight and it was fine when I switched on in the morning. I spoke to my dealer who reckoned 282's can be quite sensitive. Perhaps leaving everything off overnight might help in your case too, there's nothing to lose, right? If it still does the mute thing I would like to think the service carried a warranty which may cover the transport costs for a thorough inspection.

Jonners posted:

I posted yesterday I had a channel down for no good reason also following my 200/282 service, their first in 12 years of faultless service.

I left everything off overnight and it was fine when I switched on in the morning. I spoke to my dealer who reckoned 282's can be quite sensitive. Perhaps leaving everything off overnight might help in your case too, there's nothing to lose, right? If it still does the mute thing I would like to think the service carried a warranty which may cover the transport costs for a thorough inspection.

I saw your post (I was the one who suggested you take the non-Naim PSU out of the equation). I don't think it's the same situation. One I'm using all Naim product, including PSU, and secondly it's very intermittant. It's working now so leaving it off overnight isn't going to reveal anything useful. I've had this exact kit for 6 years and it never had any issues like this. Only since it returned from service. I have now refitted all the cables, making sure they are all secure. I'll just have to see if it happens again. I'll end up reconnecting it all again in about a week when I get my Fraim.

RaceTripper posted:

Jonners posted:

I posted yesterday I had a channel down for no good reason also following my 200/282 service, their first in 12 years of faultless service.

I left everything off overnight and it was fine when I switched on in the morning. I spoke to my dealer who reckoned 282's can be quite sensitive. Perhaps leaving everything off overnight might help in your case too, there's nothing to lose, right? If it still does the mute thing I would like to think the service carried a warranty which may cover the transport costs for a thorough inspection.

I saw your post (I was the one who suggested you take the non-Naim PSU out of the equation). I don't think it's the same situation. One I'm using all Naim product, including PSU, and secondly it's very intermittant. It's working now so leaving it off overnight isn't going to reveal anything useful. I've had this exact kit for 6 years and it never had any issues like this. Only since it returned from service. I have now refitted all the cables, making sure they are all secure. I'll just have to see if it happens again. I'll end up reconnecting it all again in about a week when I get my Fraim.

Duh, sorry RaceTripper - I didn't make the connection! I wasn't intending to patronise, hope you get this sorted one way or another.

Jonners posted:

RaceTripper posted:

Jonners posted:

I posted yesterday...

I saw your post ....

Duh, sorry RaceTripper - I didn't make the connection! I wasn't intending to patronise, hope you get this sorted one way or another.

No worries. I didn't take it that way at all. Your post was just fine and I appreciate you trying to help.

It still sounds like something that would happen when the DC feed from the HiCap is lost somehow as a NAPSC only will cause a 282 to mute until the main DC feed is established.

Now, where that is failing is another issue entirely. You could get a multimeter and set it to continuity mode and just check all the pins in the SNAIC are fully consistent. But as it is intermittent, you may have the SNAIC held in a position that doesn't reveal this. It could also be the DIN socket for the PSU also, but whether on the PSU side or 282 side is hard to judge. 

Can your dealer lend you in order,

• A new SNAIC
• A HiCap
• Another 282

For the simple purpose of narrowing down which items the problem lies in before digging deeper?

feeling_zen posted:

It still sounds like something that would happen when the DC feed from the HiCap is lost somehow as a NAPSC only will cause a 282 to mute until the main DC feed is established.

Now, where that is failing is another issue entirely. You could get a multimeter and set it to continuity mode and just check all the pins in the SNAIC are fully consistent. But as it is intermittent, you may have the SNAIC held in a position that doesn't reveal this. It could also be the DIN socket for the PSU also, but whether on the PSU side or 282 side is hard to judge. 

Can your dealer lend you in order,

• A new SNAIC
• A HiCap
• Another 282

For the simple purpose of narrowing down which items the problem lies in before digging deeper?

I have two SNAIC cables. The standard one and a Chord Chorus reference. The mute thing has happened with both. The first time I had the Naim SNAIC so I switched to the Chord. This time it was with the Chord, and I have now switched back to the Naim. It has been weeks between the mute issue happening, so that makes it especially difficult to troubleshoot effectively.

My dealer does carry demos for the full Naim line. They mostly have the digital line (Uniti, Mu-so, plus I think a 272/200 system), so getting a loaner 282 or HC maybe not be possible. The other problem getting a loaner is the mute happens intermittently and can be weeks between occurrences, so even if they have a 282/HC they won't want to lend it for more than couple days (Sunday-Monday).

It so happens though the dealer is having an open house "meet the reps" event this weekend – with reps visiting from Naim, among others – and Naim NA sent in a 282/HC/300 (among other things) to demo for the occasion. They have already agreed to loan me the HiCap since I am interested in adding a second one to my system, but that may not help me troubleshoot anything, again, since it could be weeks before it happens again.

If the problem were repeatable or more chronic your advice would be good, but I don't know that it will help for my situation.

I'll also ask the Naim rep at the dealer event this weekend, but I don't know how technical he is (vs being a sales guy).

This really does sound like a connection issue I had a similar one turned out to be loose solder in the interconnect but as yours happens with different interconnects I would think that maybe you have a loose connection in the hicap itself or even in the 282s din socket.

Bob the Builder posted:

This really does sound like a connection issue I had a similar one turned out to be loose solder in the interconnect but as yours happens with different interconnects I would think that maybe you have a loose connection in the hicap itself or even in the 282s din socket.

Thanks, I think that stands to reason. If that's indeed the case, I suppose it will become less intermittent over time. If that's the case I'm a bit disppointed that it came back from Naim that way, and was never an issue in all the years before it went there. At least that should be an easy fix and hopefully doesn't require it going back to Naim. 

Racetripper, are you saying your kit had to go all the way back to Naim in the UK for the service work? 

Richard Dane posted:

Racetripper, are you saying your kit had to go all the way back to Naim in the UK for the service work? 

No, it went to Naim in Canada. 282/NapSC/HiCap/250 all for service and DR upgrades. It came back in August. After that is when the mute thing started. It never happened before in the 6 years or so I've had this.

Well as annoying as it is and I totally sympathize with the timing too but the only way to really find out is to send it back. 

Bob the Builder posted:

Well as annoying as it is and I totally sympathize with the timing too but the only way to really find out is to send it back. 

I would like to avoid that if possible. It was expensive to ship the first time around. I will see what happens after I set up my Fraim that should arrive in the next week or so. Maybe, just maybe, it was a connection issue with hooking it all up again after I received it back from service. 

Did you send it directly to the distributor, or via your dealer?  I would let them know of the problem, what you've done to try to solve it, and take it from there.

Richard Dane posted:

Did you send it directly to the distributor, or via your dealer?  I would let them know of the problem, what you've done to try to solve it, and take it from there.

Yes, this was done through my dealer. They sent everything to Naim NA, and I belive it all went to the service center in Canada. It all came back with DR upgrades (the stickers are on the HC and 250) and was presumably serviced – as I paid for that – although no paperwork was included (also a disappointing point about it). I asked my dealer about service paperwork and they said Naim didn't provide any. 

Anyway, the dealer was closed Sunday/Monday so I plan to discuss it with them today. I will also see the Naim rep on Friday when he is at the dealer for their open house event.

There definitely should be supporting paperwork for any service or DR work done

Don't let your dealer fob you off ...insist you get it.

Japtimscarlet posted:

There definitely should be supporting paperwork for any service or DR work done

Don't let your dealer fob you off ...insist you get it.

This seems true. I’ve seen a number used equipment for sale that had paperwork showing it gad been serviced and what was done. I think thise were with AV Options. That said my Qute went for service where you sent your kit and it came back with service papers. Hell it even came back with the bad parts in a separate bag. 

I agree. I brought it up and asked them to get something for me.