Sansui Amp - Parts

Scratchy sound is often just dirt. Use DeoxIT D5 [16] for metal switches and DeoxIT F5 (FaderLube) [16] for carbon-track volume and tone knobs.

Though registration is often limited, this is the gold standard for downloading service manuals [9] that contain full parts lists. sansui amp parts

A critical safety item. Many vintage Sansui models (like the AU-317) use resistors designed to "open" under fault conditions; these often drift in value over time [15] and should be replaced with modern flameproof versions. Scratchy sound is often just dirt

Certain original transistors, such as the 2SC871 [7], are notorious for becoming noisy or causing crackling. BC550 [7] is a common modern equivalent recommended by restorers. such as the 2SC871 [7]