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Yamaha MV1602 Aux3/4 jumper mod
Old 29th May 2020
Here for the gear
Yamaha MV1602 Aux3/4 jumper mod

Is anyone familiar with the Yamaha MV1602? I've just refurbished one, and going through the manual I saw that Aux 3/4 were wired as pre-fader sends. The operating manual mentions that a jumper allows you to change them to post-fader. However, the service manual doesn't point out where this jumper is or how to perform the mod (or I'm blind and missed it). I took the cover off again and couldn't see any obvious jumpers on the aux send or main boards. Has anyone else attempted to perform this mod?
Old 31st May 2020
Lives for gear
Those jumpers are shown in the schematic of channel 1 (see below) as S121 (pre-eq and fader), S122 (post-eq, pre-fader), S123 (post-fader). For other channels they will be called Sx21, Sx22, Sx23, where "x" is the channel number. I've located them for you in the PCB for the first four channels (see below).
Attached Thumbnails
Yamaha MV1602 Aux3/4 jumper mod-mv1602-sch.jpg   Yamaha MV1602 Aux3/4 jumper mod-mv1602-pcb.png  
Old 3 weeks ago
Here for the gear
Ahh, thanks so much! That's really helpful!
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