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Accuphase E-480 meter flicking

My was running great about a year after voltage conversion, till this morning  after I left it on overnight, the E480 meter start to flicking after playing music just for few mins, and does not make any more sound. I did turn it off, and on, change power cord, speaker cable it still does same thing it play for few mins, the meter start to flicking, and all sound disappear right after. any idea what may cause this issue? 

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zensview
imhififan's avatar
imhififan
2,119 posts
 

@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. 

 

zensview OP
44 posts
 

@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. 

asimo7
3 posts
 

Adjusting your DAC fixed the issue?

zensview OP
44 posts
 

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

asimo7
3 posts
 

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.

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