A1312 Power Board

Updated October 6, 2026

Overview

Product sourcing insights & recommendations

43 来源

The iMac A1312 power board (27-inch models, 2009–2011) is a critical component in the secondary repair market, driven by the longevity of these legacy machines. Market trends show a steady demand for replacement units as original parts reach their end-of-life cycle, typically failing due to secondary rectifier issues or capacitor degradation. Businessresearchinsights Eevblog

Market Insights & Pricing

* Availability: Parts are widely available on B2B platforms like Alibaba.com, with both "New Original" and "Pull/Used" stock being common. Alibaba Alibaba

* Wholesale Pricing: Prices range significantly based on condition and order volume. Refurbished or pull units can be found for as low as $50–$53/piece at low MOQs (1–2 pieces), while bulk orders (10+ pieces) for new units vary between $50 and $200 depending on supplier and certification. Alibaba Alibaba Alibaba

* Retail/Consumer Pricing: On platforms like Amazon and eBay, individual replacement boards typically retail between $60 and $85, often bundled with repair kits or basic warranties. Amazon Beetstech

Technical Trends & Common Issues

* Interchangeability: The 310W power supply is generally interchangeable across A1312 models from Late 2009 to Mid 2011, despite minor revision differences in internal component layouts between manufacturers like LiteOn and Delta. Cpumedics Ifixit

* Common Failure Points:

* Secondary Rectifier Diodes: The SBR20A40 dual diodes are high-failure items often triggered by logic board shorts. Storepeter

* LED Indicators: Diagnostic LED #1 on the logic board is the primary indicator; if it is off, the power supply is not delivering the essential standby 12V DC. Eevblog Ifixit

* External Factors: Overheating and GPU failures in the A1312 series can sometimes be misdiagnosed as power board issues, as a failing GPU can trigger a safety shutdown of the PSU. Eevblog Storepeter

Strategic Sourcing Note

When sourcing, focus on identifying the specific part number required (e.g., 614-0446 or 661-5972). While they are largely compatible, verified "New Original" stock from Shenzhen-based suppliers like *Just Ewin Technology* or *Shenzhen Exin Era Trade* currently shows high transaction volumes for these specific replacement parts. Alibaba Alibaba

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Sources & References

43 sources cited · Verified industry data & reports

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