BINGO! Two 2A 250V fuses on the outside of the fuse array are blown. THANK YOUUU!!!

Well, now I have another problem! When I boot up the SD-1 the display looks just like this picture I found online of an ESQ-1 display that is "displaying" the same issue: https://i.ibb.co/DQMpNMN/4e7f2190a5bbd38c713ddb36729084fbcee41889-2-666x500.jpg Almost all blacked out but faint glow from the ed...

Alternatively, does anyone know of a good tech who works on Ensoniq synths? I'd hate to spend the money to ship and repair but I'd really like to get this noise cleaned up!

I COULD go in and replace these caps, but man oh man....these PCBs are a bit eager to let a pad come off in the replacement process. I have a good desoldering station and am very careful, but in replacing all the electrolytics I had to scrape some solder mask off and manually bridge several caps due...

Here are the pictures! You can see the picture of the power board there is a little scorching near the power transistors on the board. Don't know if that matters, but its there. I couldn't upload the images no matter how much I reduced the size, so I had to upload them elsewhere. C69 is a brand new ...

It is interesting that the service manual seems to point to the charge pump specifically for this type of issue. I did do a factory reset (no change in the issue) and I have the latest sequencer OS coming in the mail. I haven't used the sequencer yet so no rush there. I will pop the synth back open ...

OK I performed all of the tests you described to try and isolate the source of the clipping. Each voice was soloed and tested dry through the master outputs and then through the AUX outputs. Each voice displays the clipping, both EPNO SOFT and EPNO HARD. I also did extensive testing to see which pre...

Its on Page 1 of the factory presets and its called DEEP-TINES. I took the reverb that comes with the patch off for a better sample of the noise. If you have headphones you should be able to hear the clipping on my sample. Might not come through on a phone or laptop speakers.

Thank you!

Hello everyone, this is my first post! Years ago I inherited an old Ensoniq SD-1 that used to belong to my uncle. He was a working musician who passed away coming home from a gig in '93 when I was very young. The SD-1 was his last purchase and it was certainly state of the art at the time. It was th...