GetFletch

Hi Sandy - that's a great help. Thank you very much.

Be careful the wife doesn’t throw it out with the rubbish.

Sandy - you are a stickler for punishement 😁

I didn't realise that not all Sinsonido's have the the DC Power Supply. I have the same 1-page Sinsonido Guitar manual that show 9V/200mA. I bought my Sinsonido second hand on Reverb and it came with 9V/150mA adaptor that did initially work. I will go to my local electrical store and try to test a 9V/200mA adaptor of both polarities. Sandy - fyi, there is a Sinsonido "body" currently available on Reverb as replacement parts: https://reverb.com/uk/item/61229229-aria-sinsonido-bass-body-plus-parts-2001-natural

Hi Alain - I agree, your soundclips sound OK to me. As for your question about the power supply, I recorded my soundclips using the 9V battery as the power source. However, I now don't get any output when I collect my DC power supply. When I first connected the power supply, after years of not playing my Sinsonido, I had a lot of interference noise for about 20 secs then nothing ever since. That's why I suspect I connected the wrong power supply. It is 9V, 150mA with the pisitive pole at the center of the connector. Can you tell me the polarity of your power supply? I will then order a replacement from Amazon or Ebay. Sandy - are we arriving at the conclusion that it is not worthwhile swapping my PCB as there will be negligible benefit?

Thanks Sandy - maybe I should replicate the audio clips the Aalain uploaded for a fair comparison. I will also render a .wav file for better spectrum analysis. I will still hold-off removing the PCB for now but I definitely need to get the power supply / diode issue resolved.

Hi Sandy - I have finally got around to some action. I have spent a couple of hours, on this cold Saturday afternoon, refamiliarising myself with my Sinsonido. It's been great fun. Firstly, I'm not certain if the problem with the input power is an issue with the DC box or if I have blown a diode. I say that because I have noticed a crack in by power supply which makes me think I have crushed or dropped it during a recent house move. I can't remember what you said the polarity should be but the I tried is 9V, 150mA with negative on the outside and positive at the center of the connection. Secondly, I have recorded a sample sound clip as requested. This recorded directly into my audio interface and into my DAW completely dry. My shaky bass playing aside, the sound is much better than I remember it. Let me know what you think about the output and tone. I will hold off disconnecting the PCB until I hear from you. Many thanks, David GoGetFletch - Sinsonido Sound Clip1.mp3

Hi Sandy, I would describe the symptoms I was eperiencing with my Sinsonido as being low output and clipping of the sound. The tone was very thin and adjusting the tone control didn't seem to make a great deal of difference to the sound. Hope this is of help. David

Hi Sandy and Aalin, I've just had a bit of a disaster. I was going to record and post some examples of the tone from my Sinsonido and I thought I had connected the correct 9V power supply. It turns out not to be the case and now I am not getting any sound out at all. I will pick-up a a 9V battery tomorrow and give that a go tomorrow evening. I hope I have not caused any permanent damage. Sandy - if you could contact me directly and let me know where in the "Beautiful South" you are based, I will happily arrange to get my Sinsonido to you to use as a guinea-pig. I will of course compensate you accordingly.

Sandy - here are the photos requested. I hope these are satifactory for you. Please feel free to email me directly ([email protected]) and I will be able to email a higher resolution photo.

Hi Sandy - apologies for the delay in getting back to you. I've been away. I enclose a photo of my Sinsonido fretless bass. My volume and tone pots are on the top. Good to hear that you have wired the board. Let us know how the testing is going. I am happy to be a guinea pig for you beta testing.

Bon chance ....

Makes sense. Keep us posted .....

Sandy - that sounds encoraging. I am happy for you to use the original PCB in my Sinsonido as the guinea pig and indemnifying you if it all goes Pete Tong Just let me know.

Hey Sandy - thanks for getting back to me. Having listened to your sound clips, I would definitely like to have a copy of your replacement circuit. I haven't played my Sinonido in anger in years tbh, so there is no pressure whatsoever on timeframes. How would you like to proceed? You can contact me directly on gogetfletch-at-gee-mail-dot-com