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Probing an under the weather weather station

05 Jan 2015  | Brian Dipert

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The backside of the LCD is more interesting, albeit ultimately somewhat frustrating. That's because, as you'll soon see in closer proximity, the primary ICs on each of the three mini PCBs are obscured by black "glob-top" epoxy, commonly used in the industry both to protect package-less chip-on-board assembled ICs and their constituent wire bonds, and to obscure the ICs' identities. Here, first, are both sides of the PCB shown in the upper left corner of the earlier photo:




Next is the PCB in the middle and to the right side of the earlier photo:




And finally, here's the PCB located at the bottom of the LCD:





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