Log in
Register
Home
Forums
New posts
Search forums
What's new
Featured content
New posts
New profile posts
Latest activity
News
Members
Current visitors
New profile posts
Search profile posts
Features
Log in
Register
What's new
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Menu
Install the app
Install
Reply to thread
Home
Forums
Pro Audio
Varsity
Phantom power destroying outputs?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="John Roberts" data-source="post: 58323" data-attributes="member: 126"><p>Re: Phanton power destroying outputs ?</p><p></p><p>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. </p><p></p><p>That specific failure is a fairly common IC failure. Or perhaps shorted decoupling capacitors, shorted pass transistors, etc. </p><p></p><p>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. </p><p></p><p>or not... </p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 58323, member: 126"] 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 [/QUOTE]
Insert quotes…
Verification
Post reply
Home
Forums
Pro Audio
Varsity
Phantom power destroying outputs?
Top
Bottom
Sign-up
or
log in
to join the discussion today!
