Post by m111 on Jul 22, 2017 21:02:46 GMT -5
Hello. I'm new to this forum and trying to troubleshoot my Yamaha electone, which suddenly lost all its B flats. I'm not completely sure about the signal path, but did some poking around with the meter and found an area where the signal is dead. The voltage reads a true 5v in the master oscillator circuit, but seems to be lost when it gets to the wave transformer. This appears to be the next circuit in line. I compared all the twelve wires from the oscillator where they connect to the wave transformer. There is one light blue wire that does not read 5v. It couples with 8 other light blue wires that have about a dozen caps and resistors attached to them.
These 8 wires seem to then travel to the divider circuit where the voltage also reads bad. I assume it is bad there because it comes after the wave transformer, but I'm not able to confirm this. If that was the case then I would think I need to re-cap this blue wire area on the wave transformer. Any suggestions? Should I start with just the caps by where the first wire lands or do the whole section? Should I do all the caps before I do any resistors? Is there any chance a problem in the divider circuit could cause the voltages to be wrong in both circuits? Any opinions are greatly appreciated! Thanks so much!
-Willl
These 8 wires seem to then travel to the divider circuit where the voltage also reads bad. I assume it is bad there because it comes after the wave transformer, but I'm not able to confirm this. If that was the case then I would think I need to re-cap this blue wire area on the wave transformer. Any suggestions? Should I start with just the caps by where the first wire lands or do the whole section? Should I do all the caps before I do any resistors? Is there any chance a problem in the divider circuit could cause the voltages to be wrong in both circuits? Any opinions are greatly appreciated! Thanks so much!
-Willl