We had to pull this Earthquake Cinenova7 out of one of our clients houses because the amp boards kept on failing. It seems to be the same problem on every board. It looks to be that the transistors at location q111 and q112 have burned out. Earthquake won’t service this amp anymore so I’m wondering if it’s worth repairing. The only weird thing I have found is the voltage on the secondary is a bit higher than the rated voltage written on the transformer(44v vs 39v). Our mains voltage out here is around 120 if that makes much difference.
Any help/education would be greatly appreciated as I’m new to amplifier tech.
Any help/education would be greatly appreciated as I’m new to amplifier tech.