Hani.eid123
New Member
My CDI went bad. I started getting popping and intermittent throttle on accel. So I took a deemed to the CDI plastic case and what I found was pretty cool. The mother board a couple capacitors diodes and resistors. Since Diodes and resistors usually don't go bad I went straight for the capacitors. After identifying the capacitors and went to radioshack got them and 20 minutes of soldering later I have a working CDI.screw paying Yamaha 400-600 bucks for a new one. The capacitors is pretty much the only part that needs replacing. Picture attached
Top is before bottom is after
Tips.
This solder has lead in it so do this outside or ina well ventilated area.
Yamaha covered parts of the cdi with glue so try to remove it off the caps first
When trying to get the old caps out melt one side then push the cap to one side, let the solder cure then melt the other contact push it to the other side etc till it walks out of both holes.
Also the polarity is marked on the chip BUT one is marked incorrectly so use the capacitors orientation as your orientation key.
Good luck!
Top is before bottom is after
Tips.
This solder has lead in it so do this outside or ina well ventilated area.
Yamaha covered parts of the cdi with glue so try to remove it off the caps first
When trying to get the old caps out melt one side then push the cap to one side, let the solder cure then melt the other contact push it to the other side etc till it walks out of both holes.
Also the polarity is marked on the chip BUT one is marked incorrectly so use the capacitors orientation as your orientation key.
Good luck!