2021年2月1日 · Looking over the service manual and this forum I read about the STK power packs and the reputation that they hold. Going for it (and being stumped on the hum) I decided …

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2022年3月16日 · Quick testing revealed that both original STK-0050 modules in this unit are toasted. The original Sanyo power modules are obsolete and no longer available on the market.

The Pioneer STK0050 Darlington Power Pack Modules are designed specifically for the SX-780 amplifier system, providing an essential boost to its power output. These modules are built …

2023年11月10日 · Unless the power pack is properly mounted on a large heat sink, it is preferable to keep the supply voltage low. Here is the complete circuit for testing the power pack

STK modules are medium size power amp and power supply modules. They were, and still are, frequently used in consumer receivers, power amplifiers, and powered monitors. We have a …

2022年8月17日 · Part Number: STK0050, STK-0050. Function: 55W, Darlington AF Power Amplifier. Package: ZIP 10 Pin. Manufacturer: Sanyo. Image. The STK0050 is Audio module …

2020年1月23日 · I've pulled a few STK modules, thinking they were bad, only to find out (after replacing several other amp board components) they were actually okay. With that, I was …

2023年7月6日 · It had a failed Darlington power pack when I got it, the STK-0050. The single good pack I donated to a friend to get his 780 going. That pack is still going strong 5 years …

2023年4月19日 · I’ve tried cleaning all the knobs, switches, and the board. Nothing on the board indicates anything is getting hot and all the knobs/switches no longer crackle when moved, …