Hi
Thank you for your forum that I have joined to ask about this synth🎹 i bought cheap some years ago in Tasmania (Australia )for next to nothing (it had a few keys bent upwards). I have many other synths but this is the only Casio and it worked fine but has been stored for 5 years or so up to recently when I dusted it off.
I tried to power up with a 9v PSU and nothing and only when I opened the synth and realised the DC plug/socket deal is reversed in the music tech universe...☹️
So hoping there was a diode or some other polarity protection that meant I hadn't wrecked my Casio...When I powered it with a 9V 1A PSU (which are the specs roughly) and bench PS same thing happened: . I get to play a note or just wait for a couple of seconds before the thing powers off. There is then a period of latency when it does not respond to restarting, but after a few seconds of being off I can go through the whole process again.💤
On reading other posts, I am hoping I haven't damaged the power board, 🔥given it does power on , the little LCD starts up and i can play a riff or two, 🎹🎶or i could (the problem seems to have deteriorated with my testing) , but only for a few seconds. The power is of good character, but it has no stamina.🤭
I am wondering if a board needs repairing or replacing, or whether it is a blown capacitor (it sort of feels like that, the time and characteristic of the failure fade out is very capacitoresque)
I have a well stocked workshop with DMMs, scopes, all the parts one could ever dream of and I can solder myself out of a tight situation BUT as you may have gathered I am no synth technician and can't justify paying one to fix this. I am hoping I can get some advice from this forum, which has already been an invaluable resource:
Is there anything I can try next or any other diagnostic steps?
Or does the cost and expertise required to fix this mean I should cut my losses and move on (to a Roland Juno 106 that needs a new voice chip )?
sorry long post...
Any help is appreciated. Thank you and:
