Black screen on late 2009 imac after hearing a static "pop"

[Cory Cooper]

Hello and welcome.

Since Apple holds their hardware properties close to the vest, there aren't any schematics floating around out there. Even the Apple Genius folks do not do component-level repair, or have access to most high-end technical information.

It does sound like an inverter board and/or the display panel itself was fried. Not much more information to give there.

Hope that helps and you find a solution.

C

 

[larryf]

Cory,
Thanks for your nice and helpful reply. I am now fairly sure its one or the other so I have decided to initially try replacing the inverter board since it appears to be the least expensive option of the two. If this solves the problem I will measure output voltages and post the results on this forum with hopes that it might be helpful to others.
Thanks again,
Larry F.