D50 - loud noise from (almost) all outputs
17 Aug 2018, 13:35Hey!
All outputs but "Headphones left" of the stereo headphone output have kinda low Volume and you can hear a loud noise which changes volume pretty much randomly.
"Headphones left" only works, if you DO NOT connect a cable to "headphone right" ( that means: mono-cable in the stereo headphone output works fine, since it does only receive the left channel connecting a stereo-cable makes both of the channels sound bad).
Since I can't afford bringing it to a real synthesizer-guy who can repair it, I tried repairing the D50 by changing some parts. I changed the Volume- and Aftertouch-Sliders and all the outputs on the backside. Didn't fix anything. Then someone told me it might be the Amplifier chip ( i think it's IC 4570 on the Bender Board). Changed it and there's no difference as well.
I hope someone can help, send me your ideas please :)
btw, although i'm out of ideas, i can read the D50's circuit diagrams and will understand what you are telling me
thanks in advance!!!
All outputs but "Headphones left" of the stereo headphone output have kinda low Volume and you can hear a loud noise which changes volume pretty much randomly.
"Headphones left" only works, if you DO NOT connect a cable to "headphone right" ( that means: mono-cable in the stereo headphone output works fine, since it does only receive the left channel connecting a stereo-cable makes both of the channels sound bad).
Since I can't afford bringing it to a real synthesizer-guy who can repair it, I tried repairing the D50 by changing some parts. I changed the Volume- and Aftertouch-Sliders and all the outputs on the backside. Didn't fix anything. Then someone told me it might be the Amplifier chip ( i think it's IC 4570 on the Bender Board). Changed it and there's no difference as well.
I hope someone can help, send me your ideas please :)
btw, although i'm out of ideas, i can read the D50's circuit diagrams and will understand what you are telling me
thanks in advance!!!