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→Components: Identified U20 as Toshiba TC7WH157FU
''U19 - (Did not locate, maybe not placed?)''
'''U20 ''' ''- (Marked H157'' [https:/82/toshiba.5; TSOPsemicon-8 or similar)''storage.com/info/docget.jsp?did=20148&prodName=TC7WH157FU Toshiba TC7WH157FU]
'''U21''' - [http://web.archive.org/web/20190202204556/https://www.ti.com/lit/ds/symlink/cc1050.pdf CC1050] (back) - Low Power Transmitter - 300MHz-1000MHz, variable power, FSK
'''U25''' - [http://web.archive.org/web/20200123234645/https://www.ti.com/lit/ds/symlink/tps72.pdf TPS7201Q] - Adj. 1.2-9.75V LDO - (Designator silkscreen is hard to read; 8-SOIC on bottom-right)[[File:U?? - TPS7201Q.jpg|none|thumb|U25 and general area]]
[[File:Screenshot 20200904-195417.png|thumb|92JK ZC5 chip noted as U15|alt=|none]]
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