Brought over from DIYAudio. My questions start about here: http://www.diyaudio.com/forums/twisted-pear/272007-cronus-its-about-time-27.html

In a nutshell this has happened:


[quote]Originally Posted by ijscobar View Post
Hmm still problems I'm afraid... I have distorted sound on the left channel...
Any advise what to do?[/quote]

[quote]Originally Posted by ijscobar View Post
Had some more time to try some possibility's. I have distortion on the left channel only when upsampling to 352-384 ( using power of 2).
I also think this sudden distortion could be the reason both left channels of my power amps failed. (I'm bi amping). Repaired one amp, the other needs more attention [/quote]

[quote]Originally Posted by ijscobar View Post
No, have not tried native 352.8. I will download and try.

The problem with the left channel came very unexpected.
I had everything going well for a couple of day except I had
some distortion now and than but only for a very short time.

I was listening to music a bit louder than usual when suddenly I got
very loud distortion over both channels. I turned everything off and on again.
Both my amp (left channel only) had failed. After repairing one amp I found
out that the left channel still gave distortion while the right channel was functioning normal. Tried my cd player which was functioning normal on both channels. This means my pre amp is also okay. So I started to try my Buffalo IIISE at 44.1 to 384. It functioned allright until I went past 192...[/quote]

[quote]Originally Posted by ijscobar View Post
I must be going slightly mad: distortion now on both channels.
Downloaded a 352 flac but it would not load in Audirvana... Try again tomorrow.[/quote]

[quote]Originally Posted by francolargo View Post
@ ijscobar,
Not an engineer here, but just wondering... Photo in a previous post shows blue and violet wires leading from IP_S. I also saw this post regarding ES 9018 noise behavior. Are you confident in the continuity of the loop connected to IP_S? ...just a thought...[/quote]

[quote]Originally Posted by ijscobar View Post
The blue and violet wires are indeed connected to IP_S. On the other side is a switch. When I turn the switch in the off position I measure 1.3K Ohm. (on = 0 Ohm) Checked the switch and it is functioning as it should.

I got my old Marantz CD60 from the attic and connected it through spdif to my BIII3SE. I could get no sound from the cd player. Connected the cd player in a "normal" way to pre amp and it plays.

I have no idea if the 1.3K Ohm is normal or not.[/quote]

[quote]Originally Posted by francolargo View Post
I measured IP-S resistance on three BIIIse with no power hookup but attached to I/V boards. All 3 above 1.6 Megohms.[/quote]

[quote]Originally Posted by ijscobar View Post
I just measured again and and this time it was 2 Ohm with BIIISE turned off and 25 turned on. [/quote]

[quote]Originally Posted by ijscobar View Post
Tried an old version of Amarra (2.4.5) today. Distortion at 384 (couldn't hear music) then at lower up sampling the pitch was wrong and at 44.1 I had normal sound...[/quote]

At some point in the process I also got to hear the clicks from my relay-volume attenuator.

Yesterday I was listening to music at 192 when suddenly there was only noise...

I'm afraid I'm lost here and (again) need some help. Miero asked me to try SPDIF but no sound. Found another cd player and tried that one also but again no sound.

Strange thing is at a certain point everything worked as it should. There was music at 384. Suddenly there was a lot of noise from the left channel which (probably) damaged both my left channel power amps (I'm bi-amping). Later also the right channel stopped working at 384. Both channels were still working at 192...

Is there anything I can check to see where the problem is? (My guess would be the BIIISE died because there is no sound from SPDIF... )

Edited by user Thursday, October 1, 2015 8:00:07 AM(UTC)  | Reason: Not specified

My first suggestion would be to carefully check all of the supply voltages - and output states (voltage at the analog outputs)

Check at the DAC so as to be sure wiring is sound.

Thats a good start - you measured the same supply (VD) in 4 places - but thats ok - at least we know the three tridents are getting good power.

Now check the outputs of the tridents and AVCC :)

Great pictures - thanks! OK your supplies seem to be in order. Now check the analog outputs offset to ground - each one.

Yes spot on and those look fine. Now also check the outputs at the legato preferably.

Also try playing music via spdif with the Cronus un-powered.

Russ, am I right when I say the Tridents are okay, the Cronus-Hermus-Amanero stack is okay so the problem is somewhere in the BIIISE?

Hi Russ, thanks for your reply! Appreciate it a lot!

Let's just say the B3SE has died. Can I trust on it that the Tridents and Cronus/Hermes/Amanero are stil in working order? Don't want to damage my power amps again...

If that's the case I will order a new B3SE. (Without the Tridents)

Hi Russ, thanks again! No scope here, no mini speaker also. I will just order a new B3SE and give it another try.

I will try to get one in my hometown and check the output.

It would not have prevented getting my amps damaged.

I had the strange situation that everything worked as advertised (Music at 384), then it stopped playing at 384 but there was still good sound at 192. So I was listening to some music (volume a bit up but not overdone) when suddenly there was a lot of noise and both left channels of my power amp (bi-amp) got damaged. After that the DAC stopped working all together. Only noise. SPDIF wasn't working either. Anyway, I ordered the new B3SE and Brian already sent it to me so I hope all problems are gone after installing it.

Jumper setting is 1:2
I'm using a Mac so I don't need a driver. Don't know where to find a Windows driver either I'm afraid.