loading
reading
writing
saving
searching
Pioneer SX-950 Stereo Receiver-Rebuilt & Restored-Incredible Sound - $1,175 (Corvallis)
QR Code Link to This Post
Restoration Work :
Replacement of all electrolytic capacitors with high-quality Nichicon FG, KL, PW, ES, and Panasonic FC, FM, and FR series
Replacement of all tantalum capacitors with either electrolytic or film, depending on value.
Wima poly capacitors were used throughout the audio circuit.
Film bypass capacitors are used on the main rails
Replacement of all Zener diodes
Full bridge rectifiers rebuilt using ultra-fast diodes
Nearly every transistor in the power supply was replaced using better and more robust devices, and a new thermal compound was used.
All known trouble-making transistors were replaced. Many transistors throughout the audio circuit were replaced using low-noise devices & faster devices were used throughout the amplifier.
New output transistors using Onsemi MJ21195 and MJ21196
All controls cleaned using either Caig Deoxit D5, F5, D100 or F100 depending on the control
All new incandescent lamps were installed
All bias and offset trimmers were replaced with new Bourne trimmers
Relay rebuilt and contacts polished
Original substandard speaker posts were removed and replaced with custom high-quality USA 5-way binding posts.
Adjustments of power supply regulated voltage, output bias voltage, and DC offset.
48-hour minimum burn-in, power measurement, and measurement on the audio analyzer to measure THD, THD+N, and frequency linearity to confirm it met or exceeded factory spec