-----Original Message----- From: <Yaesu-FT-980@groups.io> Sent: Oct 22, 2022 4:28 PM To: <Yaesu-FT-980@groups.io> Subject: Re: [Yaesu-FT-980] Over Drive reported
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Dry tantalum (and Niobium-Oxide) are typically more stable than wet electrolytics when left uncharged. Field failures can often be traced as secondary failures caused by a primary failure elsewhere (large AC ripple due to an upstream dried electrolyte, or an overvoltage caused by a downstream shorted semiconductor). And of course ... poor design. If you replace a tanty , I would recommend double-checking the circuit in operation for excessive ripple, voltage margins to avoid a repeat down the road.
