Descripción:
Fixing electronic equipment.
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Lenovo N100 System Board Repair for a Battery Problem
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I received one with a wiped hard drive and 1 GB of RAM. The battery would charge for a few seconds and then the battery icon would turn off. The N100 would not turn on without a connected AC adapter. This battery has 85% charge according to Windows 7, but the laptop is not charging the battery. After a few sessions using this battery for e-... más »
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Sony PS-LX510 Turntable
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Been working on this turntable for a bit of time. Did get a copy of the service manual. Replaced tonearm belt, lubed rail & adjusted some of the adjustment screws (arm height,tracking error, etc.) inside the tonearm, itself. So, no more sticking during play. But one issue remains: rumble being picked up when the stylus lands on the record. Being a... más »
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First Marshall use of PbF ? / Test for PbF
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Just found 4 PbF faults on a 2003 AS50R, no mention of RoHS/PbF on the pcb as pre-2006. Distortion after an hour of normal use Appearance probably but not definitively PbF, shallow cones rather than domes but no pastey/crackle-finish or white blotchiness. Anyone have any precise knowledge about their first using date?... más »
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Tants. So what's the failure mechanism ... ?
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Anyone read anywhere what the failure mechanism is for solid dielectric caps of the tantalum variety ? In my experience, no matter what the value, working voltage, or format (bead, bullet or box), they always seem to fail leaky. Not open or short (well, very occasionally short). Just leaky. Example. Today, I had a Mesa Boogie combo cross my bench. Very odd problem... más »
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