Normal
Re: Phanton power destroying outputs ?I don't recall ever seeing a PCB copper failure that shorted two PS traces together from abuse or electrical stress (a possible manufacturing flaw that would never work in first place). To create a short you basically need to grow trace material laterally. If you don't see a solder bridge on a top or bottom layer, I would look elsewhere for the short.That specific failure is a fairly common IC failure. Or perhaps shorted decoupling capacitors, shorted pass transistors, etc.A dead short between + and - 15V is commonly through an IC that is connected to both. For caps or transistors, you would need pairs of failed parts which is less probable.or not...JR
Re: Phanton power destroying outputs ?
I don't recall ever seeing a PCB copper failure that shorted two PS traces together from abuse or electrical stress (a possible manufacturing flaw that would never work in first place). To create a short you basically need to grow trace material laterally. If you don't see a solder bridge on a top or bottom layer, I would look elsewhere for the short.
That specific failure is a fairly common IC failure. Or perhaps shorted decoupling capacitors, shorted pass transistors, etc.
A dead short between + and - 15V is commonly through an IC that is connected to both. For caps or transistors, you would need pairs of failed parts which is less probable.
or not...
JR
