Burn as raspbian ‘normal’ pi installand see if that works…
Do you have access to a multimeter? If the led is out presumably plus volts might not be making it to the board.
If it helps I’ve not had one fail on me and I’m not very nice to them.
And we’ll be having a 
while we’re here…
Is thare any chance that my problem have something to do with GPIO expander? I don’t have any in my set up but web config is showing: 
I think before there was written that no expander is being used. Is there any way to disable expander?
Hi, you’ve built that box by your own (congrats, btw, it looks very nice) so you should know if you have used a port expander or not !
What you can do for debuging your soundcard issue:
Here is the final result of my work of building my Zynthian-Synthesizer.
It’s painted white and I named it “DHX”.
https://youtu.be/QjVE339Axzc
Looks quite fairlight like!!
UPDATE I made a separate post on the application of this case I have on hand, but is not a “Success Case” as yet
Another seller delivers no fan ver. for almost $4 less, at the moment (The top window bezel is arched.) (This one delivers a no fan version for $4.53 total)
I tried to visualize what could fit into these surplus? cases, from the perspective photos. The lands beside the raised window look like they would protect encoder knobs. Box is 90mm70mm65mm (might hack 8mm off the left side of the LCD panel)
I suppose a low profile case ($4.87) with an actual 3.5" LCD mount could be used with a USB audio interface Zynthian .
I’ve put together Pi3B zynths with this sort of touchscreen but I’m fairly sure that nobody has managed it with a Pi4. Unless someone know better.
Good for toasting imho
I’m interested in minimal Zynthian implementations, for which there is probably a niche, a Pi 3+a which sacrifices connectors and ram to reduce the price by $10 might be a match for a small package (oddly, as I’m typing this I am listening to an interview that just mentioned Moog’s resistance to creating a more limited mini)
There’s a second (earlier) video of him playing another tune. (note the important reflective white gloves)
A simple low budget, less magical How-To example using 6 laser pointers & photosensors for 6 notes 10 - 5mw Red 5V lasers totaling $3.03 (20 $4.67)
(It’s a dim, low tech approach , need aligned receiver bank, in ceiling, no need for white gloves or sensitive detector.)
One could use 6 Green 50mw for a total of $28.76 (or $26.21) exceeds consumer safety limits, could be a customs issue?
An experiment using a slow motorized deflector (in place of a Galvanometer used in laser light shows, etc.) He added a sonar rangefinder to change octaves with beam length change.
(Don’t forget the smoke generator)
Hi, I have put a more powerful 1 watt laser module into the laser harp. Now there is a better sensitivity to a height of 2 meters. I can not implement switching sounds from the pedal.
Rather, the pedal comes from Arduino and responds to General Midi sounds, but not to switching Zynthian sounds, I don’t know how to implement it yet.
I was looking at disco laser light boxes that might be easier to hack than building the harp from scratch, some read programmed images from an SD card:
3 colors totaling 1000mw, DMX $149
A gamble purchase, but might just have to tap in to deflector position signal. (changing colors of playing notes wold be impressive)
I’m finalizing my build. Pretty happy with the outcome. Sheet metal is from old computer case. Sides are from oak wood.
Forgive my crappy guitar playing :’( but I hope hungry has its stomach full now 
So my second Zynthian is finally done.
To the left of the midi jacks are the on off switch for battery power.
The keyboard is connected to the Raspberry with USB as you can se here.
I know that it is custom to share som audio from your Zynthian so I recorded some live sequencing and put on Youtube, I didn’t go exactly as planned but anyway here it is.
Congratulations. It’s a beautiful case for the Zynthian and it pays tribute to it.
Looks Rad! How did you do the panel?
