Teisco 60F - dead VCO?

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radek tymecki
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Teisco 60F - dead VCO?

Post by radek tymecki » Sun Apr 09, 2017 3:27 pm

I guess I'm not lucky with the synths at the moment haha. WCO is not working... the noise slider has effect and reacts on all controls. so i can modify it with lfo, filters and envelope. but vco slider does nothing. synth section is quiet. range and waveform selector has no effect, only green leds are getting lit or start reacting [only saw, pulse is dead]. anyway there is no sound. i've checked ca3080 and other 4558/072 and they seem to be ok. what can it be then? dead ua726?

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Re: Teisco 60F - dead VCO?

Post by jxalex » Sun Apr 09, 2017 10:27 pm

No effect or does it has just 2 positions possible (max and min, which can be obtained?)
check at first if the slider gives out the driving voltage from its slider pin as it should be.
these synths are really old and the VCO slider perhaps.

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