CRABFLAG
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The link did not work for me. The website seemed sketchy. But I think that would be helpful for me. I’m now thinking it is the melody volume slider and an issue with the amplifier.
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Also, I think I have tried every output including the headphone output so it is a problem happening before that part of the keyboard.
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KEYBOARD UPDATE: Again, I have been busy for the holidays, so I have not had much time to work on the broken CT6000 but I found another one locally and was able to get it for $150. Which in total $175 is not bad for two vintage Casios. I have not tested everything but this new one seems to work. So maybe that will help me in some way with working on the broken one.
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@pianokeyjoe This keyboard also has a separate melody and rhythm volume sliders. Is there a chance that those are not functional also? Maybe they all need attention? When I connected the wires to bypass the master I was able to hear the rhythm section without the static sound but it was still VERY QUIET. So maybe the volume going into the master is quiet or just not there for the keyboard? Is there another way to test the keyboard sound?
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@pianokeyjoe sorry for the delayed response. I have tried touching points together on the volume slider to see if anything would work and I can still not get this thing to make noise. I even tried connecting the red, white and black wires connected to the master volume together hoping to bypass the slider. The electric hum went away when I did that but still no sound. I am not sure what I would even do now.
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@Chas when I got it home I hooked it up and was able to use it as a midi controller and when I sent midi into it it was making the weird sounds the built in keys were making. So midi communication works and I’m going to use the midi input to test it so I don’t need to keep putting it all together just to test. Just running midi in and one audio cable out for testing.
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@pianokeyjoe I cleaned the board with rubbing alcohol, removed the wires for the main volume slider and cleaned the contacts with contact cleaned and then resoldered the wires. I added some before and after photos in the google drive folder. I have not put it back together or tested it yet. What is the best way to short the max volume pins to try and give this thing full volume? Thanks for the help so far! https://drive.google.com/drive/folders/1mK-NVLZ-nR4NFnlxD7rVhsK6HQP1wVlg
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@pianokeyjoe I did hear a very faint drum pattern! I will work on cleaning this and get back to you. Do you have a recommendation for a board cleaner?
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I bought a broken CT-6000 from Craigslist. It was in ROUGH shape. It powers on but there is only a static sound coming from all speakers and outputs. I have opened it up, cleaned the inside and replace one blown resistor. Everything else looks good and I have used a multi meter to check that the main boards have power. It almost sounds like something between the synth and the main output board is not hooked up correctly and it is only sounding some electronic interference. Any advise is welcomed! Is there a possibility that I could repair this or is she ready for the graveyard? 💀 I have some photos of the boards and a short video of the sound in this google drive folder: https://drive.google.com/drive/folders/1mK-NVLZ-nR4NFnlxD7rVhsK6HQP1wVlg
