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Old school bench tests vs modern bus analyzers, which one caught your fault first?
Back in 2005 at the MRO shop in Tucson, we chased a flap indication issue for two full shifts with just a multimeter and a wiring diagram, finally found a chafed wire behind a relay panel. Fast forward to last month, same kind of intermittent fault on a new build, and the ARINC 429 analyzer pinned it down in about 40 minutes flat. I get that digital tools save time, but I've seen guys trust the bus data too quick and miss a bad ground that an old analog sweep would've caught instantly. Are we losing the knack for hands-on signal tracing because the fancy boxes do the thinking for us, or is that just nostalgia talking? Has anyone else had a case where the modern gear flat out lied or gave a false lead compared to the old school method?
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