On 4/10/2014 9:36 PM, Phil Allison wrote:
Phil Allison wrote:

ever since someone had the brain wave of putting "computer" fans
inside power amps - service techs have had to deal with dust and
fluff clogged heat sinks and filthy PCBs.

When such amps are installed in a music venue for years, cigarette
smoke, artificial fog oil and moisture add to the mix making the
result truly appalling.


** Some pics for you:


1. QSC USA1300, after many years operating in a venue:

http://s10.postimg.org/6e3lpj3ft/qsc1.jpg

This amp has two similar PCBs, one inverted above the other.

**Puke.




--
Trevor Wilson www.rageaudio.com.au