Radeon doesn't see red

[PGit]

A rather odd phenonemon has occurred, my PC with a radeon 9550 is incapable of displaying red, using other colours instead, such as white blue, black and green.

Is this a common problem, I havn't changed the colour settings and I'm hoping the graphics card hasn't developed a fault. Is there any way of testing it?

[Lando]

Are you sure it isn't your monitor? perhaps the red gun is on it's way out.  Or maybe it is the cable (a loose connection).  I think the graphics card is the least likely suspect.

[Piru]

Specifically check for bent pin in the connectors. I've seen the whole computer being sent for repair for this, more than one occasion.

[PGit]

Thanks. It seems the monitor cable is the problem, the pin at the bottom right is broken.