Accuphase E-480

@foolishman for these jumper on E480, does it require solder, or it can be just pull out wire, and push it in to other jump position?

It requires solder.

My E480 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? 

just wanna confirm that change its 100v for 120v, I only need change below jumper setting 

J4 -> J5

J10 -> J8

J6 -> J11

From previous experience of Accuphase amplifier voltage conversion, change 100V to 120V only required move two jumpers!

I hope some one can posts images of E480 power board (front and back) so I can verify the correct jumper settings.

@foolishman how big is the board that needs to come out to get at the jumpers? It’s hard to see the edges of it in the link picture from your original post. Or is there enough space to solder from the top?