I finished assembly as per the instructions (this is my second Shruthi btw), but during testing before adding the LCD, I tried booting it, but alas, all LED’s just light up, and no response.
I checked pin 24 from the 595, and I get 0.52V on that pin.
If I remove the controller board, and do the checks as suggested in step 4 http://mutable-instruments.net/shruthi1/build/smr4, I do not get the correct values anymore. When I first did the test during assembly, all values were correct. I am not sure if this is normal since all the components have been added in the meantime.
I removed the digit board in order to make debugging easier.
When I measure on the filter board the GND and the +5V (on the left side where other pins are too, as also written in your build instructions), I get 1,82V, instead of 5V. What else can I check?
Looks like there’s a short somewhere… First, remove all the ICs, because if there is a short, it might damage them.
Use a continuity tester to check the resistance between the +5V and GND point. If you read something below 400 ohm there’s a short somewhere. Now you have to look out for solder bridges on the PCB…
I am confused. I removed all ICs like you said, and out of curiousity I figured why not see how much V i get now, and what ya know, I get 4.97V again. So I started putting one IC after the other back in. I was sure that one of the 6 would be the problem, but even after putting back the last one, the V was still 4.97. So I connected the controller board, and it boots? I have no idea why, but I m not complaining
