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 81 
 on: February 17, 2019, 07:45:20 pm 
Started by PeterSt - Last post by Rmalits
Hi Peter,

after being skiing for a week in the Alps, I plugged in the new replacement Lush^2 right now.  Ohh, it´s so much better than my old (maybe too long) Lush.
Thank‘s a lot, Peter!

I feel really bad now that I haven‘t sent you back the broken one yet... and the money too...
I will do it tomorrow... promised!

Kind regards
Richard

 82 
 on: February 17, 2019, 07:17:44 pm 
Started by Stanray - Last post by Nick
Gents,

Your issue is proberbly nothing to do with this but I mention it as was unexpected and therefore a difficult intermittent problem to find.

Some time ago I had periods were it was difficult to connect my PC to the NOS1, also periodically the connection would drop or I would get a high number of usb transmission errors whilst playing music, usually when bass notes were struck. Finally SQ was just not consistent session to session.

It drove me mad. I was doing some very complex stuff in my PC at the time with countless iterations and listening sessions. I just could understand the variability in SQ I was encountering.

Won't bother you with how the issue was isolated, but it turned out to be the short USB cable on my NOS1. Once it was pinpointed I put a meter on the short USB d+ and d- pins. The resistance was all over the place anything from 100 ohms to a few K ohms ! The culprit was the moulded connector at the small end of the cable. Move the cable near the connector and the resistance went anywhere.

The attached pic shows the cheap replacement cable I made up. The new cable stopped all sorts of SQ and connection vairiability problems including some PC to NOS1 USB cables being better at connecting than others.

Stanley

A as mentioned above your problem most proberbly not the same but it might be worth replacing your short cable with a spare just to rule this out.

Kind Regards,
Nick.

 83 
 on: February 17, 2019, 12:23:12 pm 
Started by Stanray - Last post by PeterSt

Quote
Only after a longer period (say several days) it becomes harder to make the connection.

I am thinking of the build-up of capacitance. It could be similar to "us" needing to reboot the PC once in a while in order to sustain a good SQ. I don't know ...
Does your DC-Offset remain the same throughout the days ? you could check each day before a first play session.

Regards,
Peter

 84 
 on: February 16, 2019, 09:22:57 pm 
Started by Stanray - Last post by Stanray
Hi Peter,

Once the connection is established, I can reboot as many times as I like and the connection remains. Only after a longer period (say several days) it becomes harder to make the connection.

Something to do with grounding, potential differences, static electricity?

For now I'm fine, if the problem persists I can always try another Lush^2.

Thank you!

Regards,
Stanley

 85 
 on: February 16, 2019, 06:01:24 pm 
Started by Stanray - Last post by PeterSt

Stanley, then I am afraid you have an other kind of issue. Some groundloop thing somehow. Try whether Switch#3 on your NOS1a/G3 matters. But generally, wheter a different Protective Earthing helps.
We could also send you an other Lush^2 to see whether that helps, but ...

Regards,
Peter

 86 
 on: February 16, 2019, 05:27:51 pm 
Started by Stanray - Last post by Stanray

Stanley, does it help if you connect all the wire at both sides ?
(I expect not)


No that did't help, BUT when I DISconnected all the wires at both ends, the connection was made.

And when I REconnected the wires, while leaving the cable attached at both sides, the connection remains.

However, for me this an awkward procedure to make the connection, because the B-connector at the NOS side is very hard to reach and see in my setup.

Regards,
Stanley

 87 
 on: February 16, 2019, 04:10:12 pm 
Started by Stanray - Last post by PeterSt

Stanley, does it help if you connect all the wire at both sides ?
(I expect not)

And otherwise it is time to send it over. I suppose it can happen something is wrong, never mind we test them all (happened one time before).

Best regards,
Peter

 88 
 on: February 16, 2019, 03:15:01 pm 
Started by Stanray - Last post by Stanray

The normal procedure with NOS1a/G3 is :

- Boot PC (if that was necessary for some reason);
- NOS1a/G3 does not connect;
- Switch Off NOS1a/G3 and switch On - connects now;
- DC Offset is now wrong, so witch Off/On with Switch#2.

This is 100% standard. Leave out the switch Off of the NOS1a/G3 and nothing works.

And then still something can be with your Lush^2 ...

Peter

Hi Peter,

Yes, this is the procedure I followed many times and all cables I have will connect, but not my Lush^2.  Sad

Stanley

 89 
 on: February 16, 2019, 12:21:11 pm 
Started by Stanray - Last post by PeterSt

Hi Stanley,

The normal procedure with NOS1a/G3 is :

- Boot PC (if that was necessary for some reason);
- NOS1a/G3 does not connect;
- Switch Off NOS1a/G3 and switch On - connects now;
- DC Offset is now wrong, so witch Off/On with Switch#2.

This is 100% standard. Leave out the switch Off of the NOS1a/G3 and nothing works.

And then still something can be with your Lush^2 ...

Peter

 90 
 on: February 16, 2019, 11:02:51 am 
Started by Stanray - Last post by Stanray
Update: Lush ^1 also works perfectly, so it seems it's the problem is in Lush^2.

I now also recall Lush^2 didm't want to connect from the start and only after many attempts it did.

Regards,
Stanley

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