A Pioneer SX-680 Rebuild In Part 1 of this series, we repaired a dead Pioneer SX-680 that had no audio output. In Part 2, we’ll embark on a complete Pioneer SX-680 rebuild. The rebuild will consist of: Replacing all electrolytic capacitors with high-performance modern equivalents. Replacing failure-prone or problematic components…
Posts published in “Projects”
On the Bench: A Pioneer SX-680 Today we’ll cover a Pioneer SX-680 repair – including troubleshooting. Please note that there are high voltages present in this unit and if you are following along to repair your own unit, you are doing so at your own risk. The Pioneer SX-680 is…
[This post continues from Part 1 of the repair of a vintage Airline 9005 guitar amplifier] After restoration, the Airline 9005 guitar amplifier sounded good – but was subject to unduly long warm-up times and intermittent shorting out due to the unique design of the biasing arrangement of the power…
The Airline 9005 guitar amp was sold by Montgomery Ward’s in the early 60s. I’ve seen examples with two 12″ speakers and one 12″ speaker. The original case for the amp looked super sweet. I recently got one on the bench – however, it had been re-cased into an ill-fitting,…
In part 1 of this repair of an Airline GA 2940, I rebuilt the power supply and attempted to track down the source of a hum in the signal – which I traced to the output transistors. In this post, I’ll learn more about the output stage and replace the…
The Airline 2940 Today on the bench is an Airline model GAA-2940 console produced sometime between 1966-67. Airline was a brand used by the Montgomery Wards department store. This unit features AM/FM radio, a Voice of Music turntable, and a line level input for tape (which can also be used…