PrimaLuna Dialogue Seven monoblock poweramp problem.

[Matthewong]

Hi every sifu, I got a PrimaLuna Dialogue 7 mono poweramp, now the problem is one side of the poweramp keep blowing the fuse on the autobias PCB, may I know what is the problem that caused the fuse keep blowing on the autobias side, bad tube? Output transformer damaged? Or other parts problems? Thanks in advance for helping me to solve my problem!

 

[huggygood]

comparison with your request.
"my car is down, it works on 3 cylinders instead of four, what is the breakdown?"

 

[ihear21khz]

Most likely a bad tube. There are reliable vendors for tubes in the Kuala Lumpur / Petaling Jaya area as well as technicians who can help you if you have no idea what you are doing. You can ask a few of them to test your tubes for you too.