Hello, I’m caught in a dilemma whether to part out or sell the whole synth. I’ve managed to find all bad capacitors but I fear there is far more issues on the mainboard than I had bargained for. What are my options at this point ebay parted out or whole unit. Shipping from Canada is going to be a nightmare price wise.
Why don’t you bring it to a professional for repair? They can diagnose and repair it.
Hey Mike, sure but I only paid $80 CAD for it so really it’s not something I’d want to spend more than what I got for it. My whole idea was to repair it and hopefully sell it since I knew most of the issues were capacitors I wasn’t expecting to replace ICs. I majored in Electronics so I’m quite capable of diagnosing the problems I just don’t want to diagnose every single IC and replacing them surface mounts are a PITA to repair.
What issues are you left with? If still having trouble with the audio path, i’ll suggest you what did for this keyboard:
This is what you need:
1- An old phone or mp3 player
2- A DIY 3.5 jack with two wires, ground a either channel. It will be cool if you have an alligator clip on the ground and something pointy on the L/R. Add a 100 ohm resister on the later just in case.
3- Some small cheap speakers like the one used with old desktop computers,
Hook the speakers to either output on your xp(avoid the headphones jack for now) . Arrach the audio source ground to a good ground on the main board and use the schematics to inject audio into the line starting from the jacks all the way back to the DAC.
this method helped me alot with the XP particularly.
a good check digital microscope is a good investment
note: this method involves diagnosing the keyboard live while POWERED ON which means the AC part will have HIGH VOLTAGE . Only work if you are trained and have the knowledge for it. Do it at your own risk.
All the best