[quote name='Coilte' timestamp='1470303781' post='3104863']
This is exactly what I was referring to in my OP. Also, as well as "recently" serviced, I have come across..."regularly" serviced. This would imply that people possibly pay techs to simply clean the amp.
Handy money.
[/quote]
Yep. Massive conspiracy by amp-techs to rip you off.
It's my choice to take care of my gear and I've never had a tech that has done any more than what is needed.