MATRIXSYNTH: Repair of the Soundmaster STIX ST-305 analogue drum machine

Wednesday, February 05, 2020

Repair of the Soundmaster STIX ST-305 analogue drum machine


Published on Feb 6, 2020 Mindburner
Re-Published on Feb 5, 2020 Mindburner

"This little analogue drum machine was realised by the Italian company Soundmaster in the early 80's

This example was purchased on eBay for around £25 in dodgy condition and operation unknown.

Bodges galore and lack of a service schematic make repairing this machine a bit of a nightmare.

I think the bodges are factory fitted as they use the same kind of enameled resistor as the main PCB.

Part 1 of a 2 part series

sorry about my plosive popping on the commentary.

Also the TA5558 in not a timer, rather a dual op amp

music: Crystalline Stricture, Harbour, No Time, Secret Remix"

Repair of the Soundmaster STIX ST-305 analogue drum machine PART 2 OF 2

Published on Feb 7, 2020 Mindburner

"This little analogue drum machine was realised by the Italian company Soundmaster in the early 80's

This example was purchased on eBay for around £25 in dodgy condition and operation unknown.

Bodges galore and lack of a service schematic make repairing this machine a bit of a nightmare.

I think the bodges are factory fitted as they use the same kind of enameled resistor as the main PCB.

Part 2 of a 2 part series"

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