{ "item_title" : "Quartz Watch Repair", "item_author" : [" Kim Jang "], "item_description" : "Diagnose before you replace. Measure before you condemn.Most of the world's watches are quartz. Almost nobody is taught to repair them.A high-grade quartz caliber contains a gear train machined to the same tolerances as a mechanical one, running in jewelled bearings and wearing in the same way. It contains a stepping motor whose rotor turns exactly half a revolution, thirty-one million times a year, without missing a step. All of it is serviceable. Almost none of it is taught.This is not a book about how quartz watches work. It is a working method manual, a diagnostic reference, a set of bench checklists and a service record system, written by a WOSTEP-certified master watchmaker with thirty years at the bench.What is inside: 30 original technical diagrams, including ten step-by-step procedural illustrations showing the tool in position, the working angle, and the mistake to avoid.Caliber quick-reference tables giving manufacturer-specified current draw, coil resistance, rate tolerance and cell for around fifty caliber families - and stating plainly where a figure is not published.The signal chain end to end, and how to find where it breaks.Complete service: disassembly order, four-bath cleaning, inspection criteria, lubrication map, reassembly and testing.Electronic diagnostics - voltage under load, coil resistance, current draw, and what each reading actually tells you.Battery chemistry, and the one substitution that destroys movements.Water resistance stated honestly, and how to explain it to a customer.Chronograph, solar, digital and multifunction movements.Vintage quartz restoration, and why the circuit is the part you cannot replace.12 worked diagnostic cases with the readings taken, the fault found, and the lesson from each.Reference tables, procedure checklists and service record forms.For watchmakers, repair technicians, serious hobbyists and vintage-watch collectors - and for anyone who has been told a quartz watch is not worth opening.Independent and unaffiliated. Not authorised or endorsed by any watch manufacturer. Brand and caliber names are used descriptively for identification only.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/9/79/819/244/9798192446867_b.jpg", "price_data" : { "retail_price" : "21.99", "online_price" : "21.99", "our_price" : "21.99", "club_price" : "21.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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