T2 trouble

S

srt

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Joined
Apr 5, 2017
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58
Location
Norway
Hello

Today i power ups my Lumin T2 to play after som days whiteout playing any music, but no sound/signal to the amp.
I have power down the Lumin, app and the router whiteout no help, The amp plays fine whit my turntable.
The lumin app seams some laggy, but looks like it plays normal. All work fine when i plays last time. Any thoughts Peter ?

Forgot to write that i play whit xlr out to Octave V80

Uppdate, not working whit rca out either. Think it is the app/firmwear, the mute goes on automatic and the app is doing strange things on its selv. I have reset the app to factory, power down all things router, mesh, Lumin, iPad. no sound.
 
Does the front panel show MUTE?

Please power down the T2. Use a pin to insert into the reset hole at the back. Hold the reset while powering on the T2. Keep holding it for at least 20 seconds until you see some small text on the front panel. Then release the pin.
 
Hello Peter
No didn’t help. I havnet notis if its shown mute on t2. App seams unstaibel. When try to log in TIDAL ,i being trown out of the picture when i shall type password, just one thing that make me think its some bugg.
 
We tested Tidal login with no problem. For Tidal, you need to be running the latest Lumin firmware and the latest Lumin app.

Please try playing local music files from MinimServer or direct connected USB storage.
 
Of corse have i tyde that, playd frome my L1. No sound. The TIDAL story whas just to tell abaut the unstabel app i feel it is.
 
srt , have you tried to delete the App , and then reinstall it again ?? Just a thought.
 
No, that i haven tryd, but rus whit both iPhone and iPad. But i wil try when i come home.
 
Didnt work,
App 7.0.3 date 2020.11.13
Firmware 13.4a 28/12-2020

The app plays from L1, but no sound. i hear sound when i turn volum to full trotle, like if you haven`t the right input mode, But stil not possible to log in Tidal, because when i shall type password the inn login disappear from the screen. So something strange whit the hole Lumin.
 
For the Tidal login issue, please clear the iPad and iPhone browser cookies. The Tidal login screen is actually an embedded browser window, launched by Lumin app. On iOS, this is usually Safari browser.

For the sound output, please change the T2 output to SPDIF, then back to Analog. Make sure it is not muted, and the volume is at a sufficient level.
 
About sound issues, didnt`work. We can take this on PM if you want. don't understand why it after just have being not used for a week, "nothing" is working.
No sound from Bluethoot playing.
no sound from internet radio.
 
srt , how are things going with your T2 ?? hopefully you had it back in operation...... let us know.
 
Not going so well, it`s sendt to Norwegian distributor. It seam that the output not working, when i set the volum at max on the amplifier i heard som music, like the mute have gone wrong. So we for see what they find out.

Peter , i wil update when i get it back.
 
I had a similar issue. I could only barely hear some garbled/digitized music at 100% volume. I did all of the troubleshooting steps. It went back to the distributor and they promptly replaced the board and sent back. All has been well since. I never had confirmation of the actual issue despite asking for details. Would be interesting if they could confirm what was the cause of your issue. Keep us posted.
 
Hello,
similar issue here.
I have Lumin T2 Streamer and since several months I want to use it with external linear power supply.

I've tried with two LPS units of known brand (which name I don't want to mention), but as a result, the Lumin burned out two times and now I have to send it for repair once again.

Once I've connected the LPSU to my Lumin immediately after I powered it on, it went out of the order. The analog part of DAC didn't work, no sound from RCA, only the digital side is working (BNC to external DAC) incl. the display.

After replacement of some electronic components and then using the original SPS of Lumin, it is working back.

The power supply mentioned uses a 2-wire 80 cm DC cable with a 2-pin GX16 connector and a 5.5/2.1 plug.

Everything is checked and is assembled as it should be.

Does anyone know what could be the reason?
Many thanks!
 
Bungo said:
Hello,
similar issue here.
I have Lumin T2 Streamer and since several months I want to use it with external linear power supply.

I've tried with two LPS units of known brand (which name I don't want to mention), but as a result, the Lumin burned out two times and now I have to send it for repair once again.

Does anyone know what could be the reason?
Many thanks!
Click to expand...
I don’t know the specific reason, but practically speaking, I'm not sure it matters.

With respect your experience having the T2 burn out not once, but twice, from using these non-Lumin specified nor approved LPS, my recommendation would be: don’t do this again.

From the perspective of what is “practically significant†”; you have real world DATA not once, but TWICE, that using these non-Lumin approved nor specified LPS results in a failure mode* with the T2.

And, respectfully, you’ve likely heard that saying about “doing the same thing over and over again, expecting a different outcome.”

My recommendation: use the T2 with the Lumin power supply it came with.

*- Failure mode definition: Anything that can go wrong
† - Practically significant: What matters in the REAL world
 
Last edited:
wklie said:
P1 MINI has internal toroidal LPS, in essentially the same price range.
Click to expand...
There ya go, Bungo.

Thanks, Peter. The new P1 MINI looks to be another excellent product from LUMIN.

From my experiences owning a P1, one of the big advantages I've experienced with it, and why I love it so much, is that it seamlessly integrates streaming, D/A conversion, & preamplifier functionality into a single component.

This allows the designer and engineers to optimize the engineering & features each subsystem, as well as their integration into the P1 as a whole. Moreover, it allow provides another BIG advantage: the configuration of a MUCH SIMPLER system rather than a more complex one.

Geinrich Altschuler, the inventor of TRIZ (Theory of Inventive Problem Solving) had a maxim: The SIMPLEST solutions are the BEST. Nelson has been telling us this for years, that the simplest circuits sound the best. Both are right.

With my LUMIN P1 as the heart of my system, I now only need 1 pair of ICs, two PCs, and a pair of speakers cables. Done!

My thought is the the new P1 MINI provides many of the same key features & functions of the P1 at a more accessible price point.

If I were looking for a streamer/DAC/Preamp in this price tier, the P1 MINI would be at the top of my list.

Cheers.
 
Last edited:
Puma Cat said:
I don’t know the specific reason, but practically speaking, I'm not sure it matters.

With respect your experience having the T2 burn out not once, but twice, from using these non-Lumin specified nor approved LPS, my recommendation would be: don’t do this again.

From the perspective of what is “practically significant†”; you have real world DATA not once, but TWICE, that using these non-Lumin approved nor specified LPS results in a failure mode* with the T2.

And, respectfully, you’ve likely heard that saying about “doing the same thing over and over again, expecting a different outcome.”

My recommendation: use the T2 with the Lumin power supply it came with.

*- Failure mode definition: Anything that can go wrong
† - Practically significant: What matters in the REAL world
Click to expand...
Thanks for the reply.
I wonder why there is a problem, because in both cases I've used a popular brand LPS which is working well with other equipment (brand and type), advertised and sold as an upgrade kit for several Lumin models since long time.
Why I've tried twice? Because with the first LPS I had an issues with the DC cable, then received a whole replacement unit, so I didn't expected the Lumin won't start once again.

Is it maybe related to difference in the potentials or differences in the groundings.
I found Lumin strongly advise that the unit should be earthed.
But once we remove the serial SPS and install 2-wiring DC cable, there is no same earthing inside.

The problem only appears when we power the analog section.
The only thing that comes to my mind is that maybe the grounding installation and all other hardware has not a potential of 0 V on the ground path and all housings. The internal circuits of the Lumins are connected to the chassis ground potential and in the event that I remove the IEC socket with earth/ground, the ground will be connected via the first possible path - which will be the shields of the analog cables connected to further devices (amplifier, etc).
If this potential is not equal to 0V, I suspect that the entire voltage reference changes.

I'm sure P1 mini is very good device, but my hope was to see the muscles of T2 using better power supply.
 
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