[sdiy] Kawai sx210 issues

[Ben Stuyts]

Hi Dan,

Measure the power rails in both directions with your ohm meter. So red on +15, black on 0. And then black on +15, red on 0. Check if the lowest reading looks reasonable. Repeat for all other power rails.

Did you get those tl082’s from a reputable supplier?

Are there any tantalum capacitors in the sx210? They tend to fail short circuit.

Ben


> On 22 Mar 2025, at 17:34, Dan Weal via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
> Hi all,
> 
> Was really hoping someone can help.
> 
> I previously mentioned replacing the diode rectifiers in the psu due to them getting hot.
> 
> But it transpires there looks to be a problem with the 5v rail causing it to get hot.
> 
> I have Checked both cpu and voice board but I can’t find any issues.
> 
> Would anyone know what resistance is ohms I should be getting from the +15 and -15v rail. When I check I am getting 650 ohms. Is that right???
> 
> It’s weird because the synth was working then suddenly a few tl082 s went down I replaced them then it keep blowing the psu fuses.
> 
> Thanks all.
> 
> Best regards,
> 
> Dan
> ________________________________________________________
> This is the Synth-diy mailing list
> Submit email to: Synth-diy at synth-diy.org
> View archive at: https://synth-diy.org/pipermail/synth-diy/
> Check your settings at: https://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20250322/b8d14df3/attachment.htm>