Cepheus (Cornish CC-1) Troubleshooting

[Bognanzo]

Just powered this up and its fizzy with little volume. Ran the Voltages on the pins as compared to Kevin's build sheet and pins 5, 6, and 7 of IC1 are way off (everything else is in range). Hoping another set of eyes can see a problem or point me in the right direction.

 

[giovanni]

The solder joints on the switch could be hotter and with more solder. Check out some other build reports. The back of the board is pretty covered in flux and it’s hard for me to tell if all the solder joints are good. I would start with a very thorough visual inspection to make sure they are all good. You can refer to this guide if needed: https://learn.adafruit.com/adafruit-guide-excellent-soldering/tools

 

[leadfoot]

What transistor did you use? It looks like you installed it backwards compared to the silkscreen. I just built this same pcb to the gc-1 spec last weekend and it worked with no issues.

 

[Bognanzo]

The solder joints on the switch could be hotter and with more solder. Check out some other build reports. The back of the board is pretty covered in flux and it’s hard for me to tell if all the solder joints are good. I would start with a very thorough visual inspection to make sure they are all good. You can refer to this guide if needed: https://learn.adafruit.com/adafruit-guide-excellent-soldering/tools

I like to keep it lighter there. Ive had solder bridge under the pcb, big pain to find/fix. The switch works but Ill reflow and add a little though. thatnks.

 

[Bognanzo]

What transistor did you use? It looks like you installed it backwards compared to the silkscreen. I just built this same pcb to the gc-1 spec last weekend and it worked with no issues.

I like to keep it lighter there. Ive had solder bridge under the pcb, big pain to find/fix. The switch works but Ill reflow and add a little though. thatnks.

BC549C. The pinout is the reverse of the 2n5088.