Accuphase E-480 meter flicking

Better have a tech look at it to see if it's a serious problem. I wouldn't use it until then.

@roxy54 any recommend tech familiar with Accuphase? I'm at San Francisco bay area

Let's see if I understand what is going on. You have an integrated amp that is working intermittently, and the VU power meter is reflecting a power issue. If that is the case, your amp has failed, and you will need to seek service. 

Thanks following up with me, it still able to power on, and play low volume at 50 but once it goes up to 40, the meter will soon flicking, and stop any sound output. 

New problem? If yes, something has failed. 

@zensview 

I suspected your E480 voltage conversion was incorrect, can you provide images of the power board (front and back), maybe we can figure it out. 

@imhififan thank you following up with me again!

I switched my another amp in with same set up, and it did show warning message "Overcurrent" so I think it is the input impedance too low. guess I forget to match the dac, and amp after I upgraded my streaming DAC, finally it back to track, and works great again. 

Adjusting your DAC fixed the issue?

It is more updated, and matched input impedance from high pass filter which my speaker requires to use, that fix the issue.

Nice! Good to hear. I’m considering buying a E-480 that needs the voltage converted. Good to know the jumper reconfiguration you did was right.