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== Capacitor Health == Through-hole tantalum capacitors and aluminium electrolytics on the planar, drive logic boards, GXT graphics cards and PSU all age. Full procedure: [[IBM RS/6000 Capacitor Replacement Guide]]. Specific known capacitor failure points: * '''7012 / 7013 planar SMD aluminium electrolytics''' โ same generation as PS/2 70/80 plague. * '''7013 500-series PSU''' โ will refuse to stay on if the cooling fan signal is lost. Aged secondaries cause fan stutter which causes PSU shutdown.<ref>https://www.ardent-tool.com/RS6000/docs/pdf/38053100.pdf</ref> * '''POWER GXT graphics card decoupling''' โ SMD tantalum on the GXT800P / GXT3000P boards can fail short and pull down the +5 V rail.
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