Description: For your consideration is a vintage Pioneer SX-525 stereo receiver. This is the 10th or 11th SX-525 I've reconditioned this year. These receivers make excellent center pieces for a small to medium-sized room audio system. They have great features to include FM muting, FM noise filter, 2 tape monitor inputs (can be used as inputs for tape deck, cd player and/or recorder, mp3 player, Bluetooth DAC, etc), loudness control, stereo/mono switch, and more. Rated 13 watts per channel into 8 ohms, the SX-525 punches much higher and easily drives my ADS L500 speakers to loud levels. This SX-525 powered up fine but had the typical issues of a 50 year old stereo receiver. Noisy transistors, out of spec capacitors, noisy controls, etc. All these issues and more have been addressed. I use top-quality replacement parts by Nichicon, Elna, Panasonic, OnSemi, and others. Following is a summary of the work performed and the numerous parts replaced on this SX-525. POWER SUPPLY BOARD * Replaced all electrolytic capacitors. * Checked the 2SD313E transistor, and it tested fine. * Checked all diodes, and all tested good. * Checked DC output voltages for accuracy and stability. No issues were found. MAIN AMPLIFIER BOARD * Replaced all electrolytic capacitors. * Used WIMA metal film capacitors in the audio path where applicable. * Replaced several transistors, including the 4 differential transistors and the 2 VAS transistors. * Idle bias was set to 30mv on both channels after a 15-minute warmup. PRE-AMP/TONE CONTROL BOARD * Replaced all electrolytic capacitors. * Replaced the two 2SC1000 transistors with 2SC1845F'S. * Cleaned and lubricated pots with DeoxIt. PHONO EQUALIZATION BOARD * Replaced all electrolytic capacitors. * Utilized WIMA metal film caps in the audio path where applicable. * Checked the four 2SC1344 transistors, all tested good. TUNER BOARD * Verified AM, FM, FM stereo, and FM muting work as they should. * Adjusted tuning to align dial pointer with FM stations. MISC - Upgraded all lamps to LEDs. - Cleaned and lubricated all switches with Deoxit. - Checked main filter capacitor and the two output capacitors. All tested good. - Cleaned the interior and exterior and detailed the exterior. Physical condition of this Pioneer SX-525 is very good for its age. It does show minor wear such as minor scratches, scuffs, dings, and/or other minor blemishes. There's very light wear or scuff marks at the top of the faceplate. Please view the included pictures closely as they are part of the description. Upon completion, I used this receiver for several hours on the bench. All inputs, outputs, and functions were tested. Everything works as it should, and this receiver puts out powerful, clean, equal sound in both channels. The phono inputs are extremely quiet when properly terminated to a turntable (with ground wire connected), and the sound is fantastic. As with all equipment I recondition, I used this receiver for several evenings in my den, paired with ADS L500 speakers, and it performed flawlessly. Rest assured that you will receive a quality product. Two aftermarket speaker wire connectors will be included. Shipping will be via FedEx Ground or Home Delivery. Insurance is included and a tracking number will be provided.The receiverr will be well packed to ensure safe transit. If you have any questions, please contact me via eBay message and I'll promptly respond. Thanks for looking!
Price: 300 USD
Location: Brookneal, Virginia
End Time: 2024-11-26T21:52:11.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: Pioneer
Model: Pioneer SX-525
Country/Region of Manufacture: Japan
