Power supply failures

The Thor, Aurora, Q40, Q60 & Q68 etc. are discussed here.
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KINGCHEF
ROM Dongle
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Joined: Tue Jul 20, 2021 9:52 pm

Power supply failures

Post by KINGCHEF »

Hi,

Shortly after the release of the OPD, ICL issued an upgrade to the power supply as Capacitor C10 was failing. This was changed from 10v to 16v.

I have also had lately several supplies fail when Capacitor C1 goes 'pop' rather alarmingly , smoke and al'.

This is a
EVOX RIFA PME271M610M 0.1uF 100nF 250VAC CLASS X2 275VAC CAPACITOR - Singer

Also used in the Kenwood Chef mixer and it looks like Singer sewing machines.

About £3.50 each unless you want a big pile of them

David


stephen_usher
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Location: Oxford, UK.
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Re: Power supply failures

Post by stephen_usher »

The OPD power supply is a pretty standard Astec unit.

C10 would be the start-up capacitor.

As for C1, it's a RIFA delayed smoke generator. Don't replace it like-for-like, use a polythene X2 0.1uF capacitor instead. While you're at it replace the two 0.01uF ones as well as they'll go foom too.

All pretty standard stuff these days.


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