{"product_id":"bm2042aa-asic-chip-tin-fixture-antminer-k7","title":"BM2042AA ASIC Tin Tool for Antminer K7 Hashboard Chip Replacement","description":"\u003ch2\u003eBM2042AA Precision Tin Fixture \/ Tin Tool – Antminer K7 Hashboard Chip Replacement\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBM2042AA tin fixture\u003c\/strong\u003e is a \u003cstrong\u003eprecision alignment jig and stencil tool\u003c\/strong\u003e for replacing \u003cstrong\u003eBM2042AA chips on Antminer K7 hashboards\u003c\/strong\u003e. It clamps the bare chip in the correct orientation, aligns its pads with the matching stencil openings, and lets you apply a controlled, even bead of leaded solder paste before reflow. The result: clean, repeatable joints with no bridging, no shorts, no missed pads — which is the difference between a board that comes back to full hash and one that comes back at 80%.\u003c\/p\u003e\n\u003ch3\u003eWhy a Dedicated Tin Fixture for K7\u003c\/h3\u003e\n\u003cp\u003eThe K7 uses BM2042AA chips with a tight pad pitch and a precise solder volume window. Hand-applying paste rarely hits that window — too much paste bridges adjacent pads (creating shorts that show as shorted-chip symptoms after reflow), too little paste leaves cold joints (intermittent hash drops as the board warms up). The dedicated fixture removes the variability: every chip gets the same paste volume in the same place.\u003c\/p\u003e\n\u003ch3\u003eUse\u003c\/h3\u003e\n\u003cp\u003ePlace the BM2042AA chip into the fixture's chip pocket, top-side up. Lower the matching \u003cstrong\u003estencil plate\u003c\/strong\u003e over the chip pads — the fixture aligns it precisely. Apply leaded solder paste with a squeegee across the stencil openings, lift the stencil straight up, and remove the chip. The chip now has perfectly placed paste deposits; transfer it to the hashboard pad area and reflow at 320°C. Re-test on the K7 fixture before reassembly.\u003c\/p\u003e\n\u003ch4\u003eBM2042AA Tin Fixture Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 6px 12px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eTool Type\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eTin fixture (chip alignment jig + stencil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eChip Compatibility\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eBM2042AA (Antminer K7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eStencil Material\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eStainless steel laser-cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eChip Pocket\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003ePrecision-machined alignment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003ePaste Type\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eLeaded or lead-free solder paste\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eAntminer K7 hashboard repair workflow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eUse Case\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eBench-grade chip replacement, repair shop production\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eThroughput\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003e~30-60 chips per hour with paste set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eCondition\u003c\/td\u003e\n\u003ctd style=\"text-align: left; padding: 6px 12px;\"\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eRelated Antminer K7 Repair Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/original-bm2042aa-asic-chip-antminer-k7-replacement-restore-hash-rate\"\u003eBM2042AA ASIC Chip – Antminer K7 Hashboard Repair\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bm2042aa-chip-tin-stencil-template-precise-solution-for-antminer-k7-tin-tool\"\u003eBM2042AA Chip Tin Stencil Template – K7 Tin Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bm2280aa-asic-ic-chip-for-antminer-k7-hash-board\"\u003eBM2280AA ASIC IC Chip – Antminer K7 Hashboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/antminer-k7-water-cooling-plate-enhanced-cooling-performance-bitmain-miner\"\u003eAntminer K7 Water Cooling Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEquipping a K7 repair line? \u003ca href=\"mailto:contact@lys-sz.com\"\u003eContact us at contact@lys-sz.com\u003c\/a\u003e for fixture + stencil + chip bundle pricing. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":42687081218227,"sku":null,"price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/BM2042AA-ASIC-chip-tin-tool-replacement-K7-hash-board-chips.webp?v=1745159814","url":"https:\/\/lys-sz.com\/products\/bm2042aa-asic-chip-tin-fixture-antminer-k7","provider":"LYS Shenzhen","version":"1.0","type":"link"}