Messages

Let's just hope that's the fix if so awesome!


Sent from my iPhone using Tapatalk

Pogart - Don't know if you noticed yet but thought I'd mention it. It looks like the TL072 IC is backwards.


Sent from my iPhone using Tapatalk

Much obliged


Sent from my iPhone using Tapatalk

Not yet don't know the audio path to test it out


Sent from my iPhone using Tapatalk

Where does the audio path run? Gonna go through with a probe and see where I'm not getting sound.


Sent from my iPhone using Tapatalk

Sorry 5v


Sent from my iPhone using Tapatalk

So with the PT2399 out voltages are ~9v at pin 1 and 0 everywhere else


Sent from my iPhone using Tapatalk

K I replaced it and now pin 4 has a 0.0v rating but the others remain the same. Which makes me believe it's not the IC anymore. I'll check the solder joints which have been reflowed already just to be sure. My guess is a wrong value cap or resistor any clues as to where I might look?


Sent from my iPhone using Tapatalk

Or at least are wired correctly.


Sent from my iPhone using Tapatalk

It's to fit it into the enclosure they aren't upside down


Sent from my iPhone using Tapatalk

Here you go


Sent from my iPhone using Tapatalk

I'm using an LM78L05ACZ and have swapped out the regulator and IC with no change

I have yes. What other parts are connected to pin 4 that would allow voltage to get to it?

Yep pin 4 is at 1.05 not sure what might cause this

I get signal just no effect. Pot don't seem to change anything either. Here's my readings:
TL072:
1. 4.54
2. 4.54
3. 4.54
4. 0
5. 4.54
6. 4.54
7. 4.54
8. 9.0

PT2399:
1. 4.49
2. 2.22
3. 0
4. 1.05
5. 4.31
6. 0
7. .05
8. 4.14
9. 4.24
10. .66
11. 2.22
12. 2.22
13. Same
14 same
15 same
16 same

Regulator:
VI: 9.09
G: 0
VO: 4.48

Also my regulator is pretty hot like could burn yourself if you held your finger there too long.

Any thoughts?
Thanks,
Aryk