Song Naga
Member
Hi all,
I've got a Promethium that is outputting a very low signal when it's engaged. I've traced an input signal through the circuit and found that it seems to go 'poof' at the junction between R22 and Q3. I see a big meaty signal going into R22 but there is a constant ~7.9V voltage on the other side of it, and there does not seem to be much else going on downstream from this point signal-wise in the circuit. I'm guessing that the signal I'm hearing at the output is present at this point in the circuit, but is so small it's not visible on my rather simple oscilloscope.
Here's where I traced the signal to, the yellow point is where the signal seems to become lost.
I've triple checked the components in this part of circuit to make sure I hadn't dropped something in the wrong spot, and the values seem good. Here's a photo of the board.
Please let me know if you have any suggestions or questions that I can answer that might get this properly working, thank you!
I've got a Promethium that is outputting a very low signal when it's engaged. I've traced an input signal through the circuit and found that it seems to go 'poof' at the junction between R22 and Q3. I see a big meaty signal going into R22 but there is a constant ~7.9V voltage on the other side of it, and there does not seem to be much else going on downstream from this point signal-wise in the circuit. I'm guessing that the signal I'm hearing at the output is present at this point in the circuit, but is so small it's not visible on my rather simple oscilloscope.
Here's where I traced the signal to, the yellow point is where the signal seems to become lost.
I've triple checked the components in this part of circuit to make sure I hadn't dropped something in the wrong spot, and the values seem good. Here's a photo of the board.
Please let me know if you have any suggestions or questions that I can answer that might get this properly working, thank you!
