Re: Bush SRP31
I had very poor volume and bad quality sound on one of these. I replaced the selenium rectifier with a diode, 1N4004 or 1N4007 I think it was, plus a resistor in series. I'm a bit of a novice with electronics and soldering so you don't have to be an expert to do this and You should be able to find threads about it on the web. I believe it is a routine improvement for these vintage machines and I would recommend it.
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