Seems like cable problem then
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A simple - and cheap - fix then…?
Could it be the SNAIC between PS & 552 - the Digital supply…? Guessing the 552 is like a 52 or 252…?
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Yes ,maybe the defect cable broke the 552 in the same way again
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Naughty 
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Yea i agree, however some things need to be protected at the customers expense!
In all seriousness id say that will happen in the near future. i’d say the old way of doing things is about to be surpassed with the new way of doing things, meaning we are no longer special privileged people and the second hand market will drop like a rock which in turn will mean cheaper new Naim boxes!!!
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I guess the 222 would be the obvious match with the NC250, they are almost half price new on-line in the NZ A2A fire-sale. Just a 1 year warranty and no back-up from Naim, so personally, I wouldn’t go there. Real Music have a nice Aurelic range with streamer/pre-amps that is very good. Some older stock on sale too.
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Yes I will definitely be talking to the RM guys. It will be fun listening to potential options - and you’re right, there would seem to be a fair bit of risk with a NSC222 right now, even though that seems like it should be the best option. We would have to hope that servicing will get sorted out eventually here in NZ though
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That may have been true in the distant past. It’s not true now. I’d suggest opening your mind a bit and listening to everything. Naim certainly isn’t running a monopoly even though they’d like you to believe they are.
Naim makes great gear even today, but the way they do things is getting old to me and clearly many others. Naim won’t even sell customers a lighted logo for OC gear which they know go bad over time. It requires no soldering whatsoever to replace, but they’d like you to believe only Focal or them personally know how to turn an allen wrench.
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i’ve been around a number of different hifi rooms, imo I find Naim to be my fix. Plus the *service, upgrades and not having to search for connection cables. Naim’s whole eco system is excellent, to boot i like the sound signature. So yes it’s hard to beat for the money imo. My ears and eyes are wide awake. it’s not the best and by far from the worst. 
*forget about that where i live.
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Hi @james_n - if I understand this, I can just modify the standard Naim DIN to XLR cable for the 300 by leaving the XLR ends as they are and removing one DIN and rewiring it into the second DIN using your wiring diagram. Is that correct?
In Europe and the UK, I believe that is required by the “Right to Repair” laws*. Not so here in the US (with the exception of a couple of states) and apparently NZ, too. I would look into this, though.
*UK Right to Repair Law: “Electronic appliance manufacturers required to be able to provide consumers with spare parts for “simple and safe” repairs and to make complex parts available to repair shops.”
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I wonder how effective that is in situations where the manufacturing is outside the country of sale?
It’s the laws in the country of sale that prevail, not the country of manufacture. If the manufacturer wants to sell in that country, they have to obey its laws.
Hi Mike, Yes, you could do that.
It’s easy to get the bits and make up a new DIN4 to 2x XLR cable though, as if you were to ever sell the 300, the supplied DIN4 to XLR cables should go with it.
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Update is that the same DR regulator had failed again, which was traced back to a short in the SNAIC. Just pretty bad luck apparently.
Should be here in a few days.
Can I check which inputs to use? Input 2 (CD) for ND555, Input 6 (Aux) for LP12 and input 5 (AV) to output to the headphone amp?
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So, is the DR regulator in the 552 PS? I wasn’t aware there are any DR regulators in the NAC552(?)
You do not want a short in your SNAIC…
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It will be. As you say, there are no DR modules in the 552 head unit.
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Do i understand correctly - a bad cable (snaic with a short) caused all the trouble?
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