Phrazemaster
Well-known member
Hi gang, I'm a newbie and I just build a set of 4 green pres (great project!). I'm in the testing/troubleshooting phase and I noticed that several voltages on some IC pins vary over time. They drop, slowly. The reference voltage is .07v, and mine ALL register around 4v which drop to 3.99, 3.98, 3.97, etc.
I'm just curious if anyone could point me to what could cause such behavior? I'm assuming there's a problem with my boards since they exhibit this behavior.
The PSU puts out a steady 15v, so the supply voltage into each board is solid.
Any thoughts? I checked zener diodes, the regular diodes, a transistor...could this be caused by a bad cap? Why would all boards behave like this?
I know it's a "general" question but I've bugged the green pre meta folks enough; I'm not savvy enough to figure this out without someone giving me at least a pointer or two in the right direction.
Thanks for any thoughts,
Mike
I'm just curious if anyone could point me to what could cause such behavior? I'm assuming there's a problem with my boards since they exhibit this behavior.
The PSU puts out a steady 15v, so the supply voltage into each board is solid.
Any thoughts? I checked zener diodes, the regular diodes, a transistor...could this be caused by a bad cap? Why would all boards behave like this?
I know it's a "general" question but I've bugged the green pre meta folks enough; I'm not savvy enough to figure this out without someone giving me at least a pointer or two in the right direction.
Thanks for any thoughts,
Mike