Leonb

Yes. Ive seen some posts on the Nad issues. Just strange that something new pops everytime the previous component is replaced. It had no issues for 10years. And quite expensive to replace unit, about R35k new. So I hope to get to bottom of root cause.

Ok, so at the repair shop the amp also went into protection mode, so either: 1) the power at my house is damaging a component every time I bring the amp back from the repair shop, or 2) the repair shop is not playing open cards It is the NAD authorized repairer in Cape Town, so not a round the comer repair shop. They are having another look at the problem now.

I'm taking the amp back to repair shop today. Want to see with my own eyes if it powers up normally. If it does, I have mny questions they need to answer, i.e. whar components did they replace the first time round and why.

Directly into wall. And I tried many differnt wall plugs just to test.

Kettle trick did not work.

Speakers and all other cables already disconected. Only power cable. Why the boiling kettle?

Just tried this. No differences. Still go inuo protection.

So who can solve a problem like this....?

Strange. So I bypassed the inverter, and amp still went into protection mode. So it must be something else in the power supplied that causes this. Any ideas what to look for? I measured the voltage and it is around 220 volts which seems ok.

The inverter is only backup power, no solar.

Hi I have a strange issue where the amp of my sound system (NAD T758) goes into protection mode for no apparent reason. I sent it in for repairs, only to have it going into protection mode again. When the repair shop test the amp at their premises, the amp works fine. So after a few time back an forth, the repairer asks me if I run my system off an inverter, and that this is likely the issue. I have a Sunsynk 5kw inverter. The amp ran fine for the last 2 years it was on the inverter, first time now giving the issue. Has anyone measured the power output "quality" of Sunsynk inverters? Do they usually give clean and proper sinewave output? How can I check this on my inverter. Doe a normal electrician have access to an oscilloscope to check? Anyone else experienced something similar before?

We have a 5kw Sunsynk inverter paired with a 5kwh Sunsynk battery. No solar panels yet due to roof limitations (asbestos). In the absence of load shedding like the ~6 months to date, what do I do: 1) keep running house through inverter with battery at 100% (is this bad for the battery to stay at 100% and not have discharge/charge cycles?) 2) switch off system and bypass 3) any other setting for battery SOC, etc Thanks

Is there any advantage of using bi facial solar panels over mono facial for a rooftop installation?

Hi. It is a permanent N/E bond at the Inverter, on the inverter output. The Earth is taken from the Main DB. The distance between the Main DB in the house and Inverter installation (garage) is about 15m. There is a N/E bond at my property on the grid side of the municipal meter where it enters the house. Just FYI All the plug points in the house that are fed from the inverter have zero voltage between N and E when islanding. Some of the LEDs are on a chandelier (10) and they all flicker at the same time. The LEDs are on a dimmer, so at first I thought the dimmer might be issue, but I replaced it with a new "Shuttle dimmer" and it still flickers when running on inverter. Strangely, some times the flicker is only slight, overtimes its very bad. There are also other LEDs lights that flicker, so its not only the ones on the dimmer. But there are also LEDs that do not flicker, or at least not as noticable.

I still have some of my LEDs in the house flickering continuously when running from the inverter/batteries. Any ideas what this could be? Would mixed neutrals (between essential and non-essential wiring) somewhere in house DB or in roof cause something like this? If so, how could I confirm if this is the issue. Any test or other way without needing to physically track and trace every wire in the house?