Description
LUXMAN SQ507X Pre-Main Amplifier - Serviced Switch Contacts Product Description This is a serviced unit with cleaned and polished switch contacts. Comes with a power cable (used). Features: ? Toggle switch ? Input selector ? MODE selector ? PRE.-MAIN CONNECT ? Bass & treble curve frequency selector We thoroughly serviced the switch contacts of this 40-50 year-old amplifier model, which often suffers from contact failure leading to no sound. Having serviced over 80 units of the SQ507x and over 60 units of the SQ505x, none were free of dirt or debris on the switch contacts. Most sound issues are due to contact failures, though occasionally there may be blown fuses or broken connections. Replacing transistors or capacitors will not resolve sound issues if there is contact failure in the switch contacts. Maintenance Details ? Disassembled and polished all toggle switches (8 in total) ? Polished input selector switch contacts ? Polished MODE selector switch contacts ? Disassembled and polished PRE.-MAIN CONNECT switch contacts ? Disassembled and polished bass & treble curve frequency selector switch contacts Dirty contacts in switches like main/remote toggle, MONITOR in/out toggle, attenuate toggle, input selector, MODE selector and PRE.-MAIN CONNECT may cause issues such as no sound, sound from one side only, or intermittent sound. ? Replaced AC inlet with a new 3P to accommodate thicker cables; includes a 3P power cable (used) ? Replaced pilot lamp with a long-life, high-brightness LED (blue) ? Applied thermal silicone grease between power transistors and insulated mica/heatsink ? Polished front panel and knobs ? Adjusted collector current of power transistors (bias adjustment) ? Adjusted output voltage of speaker terminals (offset adjustment) Sound output was confirmed with PHONO-1,2 and AUX-1,2,3 inputs for main, remote speakers, and headphones. There is no static noise in the main volume and balance volume controls. The wood case, front panel, knobs, back panel, and interior have age-appropriate scratches, wear, dirt, and rust. For those seeking perfection in all amplifier functions beyond the maintenance detailed above (???), please refrain from purchasing. In the event of issues upon arrival such as power not turning on, no sound, loud noise caused by the amplifier, this sale is non-returnable and non-refundable. Shipping We dispatch via DHL/FedEx with a tracking number provided, ensuring reliable delivery. You can monitor the delivery status continuously. Shipping is available only to addresses registered on eBay. To ship to a different address, please update your address on eBay before placing your order. We ship items from Monday to Friday. Shipping is unavailable on weekends and Japanese national holidays. Handling Time Orders typically ship within 5 business days. Special Note In compliance with Japan, US, and International government regulations, we do not under-declare merchandise values or mark items as gifts. VAT and Import Duty Import duties, taxes, and charges are not included in the item price or shipping costs. These charges are the buyers responsibility. Please consult your local customs office to determine any additional costs prior to bidding or buying. Thank you for your understanding and cooperation. About Tokyo Express Established in 2003 in Canada, we have built a legacy of trust and excellence in the golf community. Since 2010, operating from California under the name JDMGolfShop, we specialized in high-quality used products. JDM stands for Japan Domestic Golf, reflecting our unwavering dedication to offering the finest products manufactured in Japan for the domestic market—many of which are exclusive to Japan. Our Commitment to Excellence: Authenticity Guaranteed: We are passionate about providing only genuine, authentic products. Each item in our store undergoes meticulous selection to meet our stringent quality standards. No Compromise on Quality: We do not sell products made in China. Our focus is on the best products from Japan, ensuring unparalleled quality and performance. Proven Track Record: With over 85,000 sets sold, we have earned a reputation for reliability and excellence. Our Offerings: Used Products: Since 2010, we have been your trusted source for high-quality used products. New Products: In 2024, we rebranded as Tokyo Express and expanded our offerings to include new products. We exclusively offer Made-in-Japan products, shipped directly from our Tokyo office. Why Choose Us: Fast Shipping: We provide fast FedEx Air Shipping, ensuring your items arrive promptly and securely. Competitive Pricing: Our prices are highly competitive, offering excellent value for top-quality products. Exceptional Customer Service: Inspired by the impeccable standards of Japanese customer service, our commitment to your satisfaction has earned us a large base of loyal, returning customers. We are here to assist you at every step, ensuring a smooth and enjoyable shopping experience. At Tokyo Express, we are passionate about delivering the best products and services to golf enthusiasts worldwide. Thank you for choosing us as your trusted source for premium golf equipment. Your satisfaction is our top priority, and we are dedicated to exceeding your expectations.
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