{"product_id":"avalon-psu3400-03-power-supply-canaan-a1346-a1366","title":"Avalon PSU3400-03 Power Supply for Avalon A1346 A1366 Miners","description":"\u003ch2\u003eAvalon PSU3400-03 Power Supply | OEM Replacement for Canaan A1346 and A1366 Miners\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAvalon PSU3400-03\u003c\/strong\u003e is the \u003cstrong\u003eOEM-spec power supply unit\u003c\/strong\u003e for the \u003cstrong\u003eCanaan Avalon A1346 and A1366 series miners\u003c\/strong\u003e. Built to deliver up to \u003cstrong\u003e3100W on the main rail\u003c\/strong\u003e with an \u003cstrong\u003e11.5-14.5V output\u003c\/strong\u003e and a secondary \u003cstrong\u003e12V \/ 200W auxiliary rail\u003c\/strong\u003e, the PSU3400-03 is the direct replacement when an A1346 \/ A1366 PSU fails in the field — same chassis dimensions, same connector pinout, same control protocol as the original.\u003c\/p\u003e\n\u003cp\u003eMining PSUs are the highest-failure-rate component on any ASIC miner — they live under continuous 90%+ load in elevated ambient temperature, switching at full duty cycle around the clock. The PSU3400-03 is the supported repair path: instead of waiting for warranty turnaround or attempting board-level repair on a failed PSU, swap in a fresh OEM unit and bring the miner back online the same day.\u003c\/p\u003e\n\u003ch3\u003eWhen You Need an Avalon PSU3400-03\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA1346 \/ A1366 miner won't start\u003c\/strong\u003e — fans spin briefly then PSU shuts down, no hashboard activation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepeated overcurrent \/ overvoltage shutdowns\u003c\/strong\u003e reported in the miner controller logs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePSU draws AC input but produces no DC output\u003c\/strong\u003e — secondary-side bulk caps failed or main switching MOSFET shorted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible fan failure\u003c\/strong\u003e on the PSU — internal cooling fan can't be replaced, full PSU swap required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible damage\u003c\/strong\u003e — burn marks, swollen capacitors, cracked PCB on the original PSU.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC input 200-300VAC, 16A\u003c\/strong\u003e — covers standard 220-240VAC mining infrastructure with derating headroom.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain DC output 11.5-14.5V, up to 3100W\u003c\/strong\u003e — adjustable rail voltage for the hashboard core supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuxiliary DC output 12V, 200W\u003c\/strong\u003e — powers the control board, fans, and indicator LEDs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-spec connector pinout\u003c\/strong\u003e — direct mate with A1346 \/ A1366 mainboard harness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in OCP \/ OVP \/ OTP protection\u003c\/strong\u003e — overcurrent, overvoltage, over-temperature shutdown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive PFC\u003c\/strong\u003e — better than 0.95 power factor at typical load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAvalon PSU3400-03 Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Input Voltage\u003c\/td\u003e\n\u003ctd\u003e200-300VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Input Current\u003c\/td\u003e\n\u003ctd\u003e16A max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain DC Output Voltage\u003c\/td\u003e\n\u003ctd\u003e11.5-14.5V (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain DC Output Power\u003c\/td\u003e\n\u003ctd\u003e3100W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuxiliary DC Output\u003c\/td\u003e\n\u003ctd\u003e12V \/ 200W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Factor\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;0.95 (typical, full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtections\u003c\/td\u003e\n\u003ctd\u003eOCP \/ OVP \/ OTP \/ Short-Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eInternal forced-air fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Miners\u003c\/td\u003e\n\u003ctd\u003eCanaan Avalon A1346, A1366\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew, OEM-spec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eFAQ — Avalon PSU3400-03\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the PSU3400-03 work on A1246 or older Avalon models?\u003c\/strong\u003e\u003cbr\u003eA: No — the PSU3400-03 is specifically rated for the A1346 \/ A1366 power envelope. Older A1246 miners use a different PSU model with different power and connector spec — confirm before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I run the PSU3400-03 at 110VAC?\u003c\/strong\u003e\u003cbr\u003eA: No — the input range is 200-300VAC. 110VAC operation is not supported. North American mining farms typically use 240VAC service for this reason.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm a PSU failure vs a mainboard failure?\u003c\/strong\u003e\u003cbr\u003eA: Disconnect the PSU output cables and measure the rails with a multimeter under no-load (some PSUs need a load to start, others self-test): if no output, PSU is failed. If output is present but the miner won't start, the failure is downstream on the mainboard or controller.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What's the typical service life?\u003c\/strong\u003e\u003cbr\u003eA: At continuous full-load mining duty, expect 18-36 months MTBF on the PSU — capacitor aging on the secondary side is the most common end-of-life failure mode.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Bulk pricing for repair shops or farms?\u003c\/strong\u003e\u003cbr\u003eA: Yes — email contact@lys-sz.com for volume pricing on A13 series PSU orders.\u003c\/p\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/avalon-a3205-chip-tin-tool-fxiture-a1066-a1046-a1047-hashboard-asic-repair\"\u003eAvalon A3205 Chip Tin Tool Fixture (A1066\/A1046\/A1047)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/813rn-a0231-ceramic-crystal-oscillator-25mhz-avalon-1166pro-repair\"\u003e813RN A0231 25MHz Crystal Oscillator (Avalon 1166pro)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/2sd882tp-npn-semiconductor-triode-high-performance-avalon-miner-repair\"\u003e2SD882T-P NPN Transistor (Avalon Miner Repair)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/whatsminer-c19-16a-power-socket-250v-connector-psu\"\u003eWhatsminer C19 16A Power Socket (250V PSU Connector)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMining farms running Avalon A1346 \/ A1366 fleets and stocking spare PSUs? Email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing and matched repair-kit options. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":42666019193011,"sku":null,"price":194.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/Avalonminer-PSU3400-03-Power-Supply-Replacement-Power-Solution-Avalon-A1346-A1366-Miners.webp?v=1747096254","url":"https:\/\/lys-sz.com\/products\/avalon-psu3400-03-power-supply-canaan-a1346-a1366","provider":"LYS Shenzhen","version":"1.0","type":"link"}