[sdiy] Yamaha CS30 repair

[Oren Leavitt]

I'd go with standard 3 amp diodes. e.g. 1N540x, et al


- Oren


On 7/25/24 12:13 PM, Kevin Walsh via Synth-diy wrote:
> Hi all,
> I have a Yamaha CS-30 in for repair that was dead on arrival. It only 
> needed the dual diodes (D1 & D2) on the PSU replaced to get it working 
> again.
> I got it working by using two pairs of 1N4001's:
>
>   * One pair configured in common cathode
>   * One pair configured in common anode
>
> Both secondary fuses were replaced with 1.6A fast blow fuses as per 
> the service manual instructions. Given this, I figured any 2 or 3 amp 
> diodes should work fine.
> Being such a nice synth, I'd prefer to have the best long-term 
> solution. Should I replace them with Schottky diodes for their lower 
> forward voltage drop and efficiency, or stick with regular silicon 
> diodes and opt for a higher current rating?
> Any tips or recommendations for specific diode models would be most 
> welcome.
> Thanks,
> Kevin.
>
>
>
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