Afterglow-GTB Posted November 9, 2018 Share Posted November 9, 2018 Story time... The expression pedal on my FBV3 died. I was performing a firmware update and afterwards it just stopped working. I thought it was too much of a coincidence so I tried reverting back to the previous version and it didn't come back to life. The thing is out of warranty anyway so I took off the bottom panel to have a look. See the attached photo... The expression pedal works by having an LED (D1 in the photo) illuminating a white flag that moves closer and further away as you operate the pedal. A light sensor (Q1 in the photo) then detects the change in light level reflected by the flag. I can tell the sensor is working because shining a torch on it caused a corresponding affect on the POD volume effect level. So I it's the little surface mount LED that has blown. The fact that it didn't visibly light up could have been due to being infra red but, no, it's blown. The whole expression pedal module is on its own small PCB so I contacted UK Yamaha service to see if they could send me a new expression pedal PCB. The only thing they could offer was for me to send the complete unit to them and they would replace the whole PCB set at a cost of £142 ($185). A whole new FBV3 in the UK is £176 ($230) so that wasn't a good option. So I ordered a pack of 10 surface mount LEDs from an eBay supplier and replaced the blown one. Expression pedal restored! Cost? £1.75 for the pack of 10 so 17.5p ($0.23) Now, I'm not saying that connecting the FBV3 to my PC to update the firmware was the cause of the LED blowing... but the coincidence does seem pretty suspicious... Michael. 1 Quote Link to comment Share on other sites More sharing options...
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