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Hi guys, I’m in the same boat as the others posting here, I just finished assembling the PCB and the power light comes on and it appears inert otherwise. I’ve tried putting a jumper to one of the pins on the volume pot and as soon as I touch a jumper to the volume it starts buzzing, but that was the only sound I’ve gotten out of it. I had a bunch of 386 chips so I tried a different one, no resuits. I took a long hard look at all my solder joints, tried touching up a couple, no results. I have a version 3.0 board and my serial # from my sticker is zd4847. The only way I deviated from the instructions in the PDF was I put in sockets for the ICs instead of soldering them directly to the board. I think I did this and everything else correctly, not positive. Any advice?
OH hey, here are a couple pics of my soldering from last night. If you spot anything let me know. I’m willing to get a USB Tiny as well if that advances the cause.
[img]https://i.imgur.com/l1zZsuA.jpg[/img]
and
[img]https://i.imgur.com/MuHDwIC.jpg[/img]
Well it looks like those tags don’t work but anyway, you can open the images in a different window or whatever.
Thanks for the photos. It looks like a lot of your solder joints should be reflowed. I would reflow all of them for good measure. Use a bit more heat (leave the iron on the joint a bit longer) and less solder this time.
Your power amp chip is working because you get a buzz on the speaker when you touch the pins of the amp chip. The problem is on the digital sides somewhere. How is the 5V power rail?
-BrachOkay, I have reflowed all the joints like 3 times, finally got it working! Turns out I need glasses and magnification when soldering, I found a lot more joints that didn’t look good that you can’t see very well in the photos. Just wanted you to know, it’s up and running and I plugged the Altura in to it last night and got them working together. So thanks so much!
