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That's interesting news! I tried to cross-reference other MT part numbers to RT numbers, but without success.
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https://[url]http://markingcodes.com...47CW or BC847C[url]http://markingcodes.com/search/c/1gw[/url]
1GW = BC847CW or BC847C
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This turned up in a Google search, but the link to the description is now dead:
[url]https://img.alicdn.com/imgextra/i1/TB1utc6JpXXXXcnXXXXXXXXXXXX_!!0-item_pic.jpg[/url]
Anyway, it was described as "BTB04-1211D 600V 4A Original imported two-way thyristor patch MOS tube TO-252 in stock - Taobao".
I guess that makes it a TRIAC.https://This turned up in a Google s...s described as
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https://[url]https://fr.aliexpress.c...ch/c/agr[/url][url]https://fr.aliexpress.com/item/1005005416510660.html[/url] (photo)
[url]http://markingcodes.com/search/c/agr[/url]https://[url]https://fr.aliexpress.c...ch/c/agr[/url]
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https://[url]http://markingcodes.com...l] (datasheet)[url]http://markingcodes.com/search/c/daas[/url]
DAAS = MCP4151-104E/MF DFN3x3-8 SPI Single Volatile Memory 8-bit Potentiometer
[url]https://www.alibaba.com/product-detail/COPOER-New-Orignal-ic-chip-MCP4151_1600494452279.html[/url]
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Have you looked for a service manual?
[url]https://elektrotanya.com/showresult?what=Daikin&kategoria=All&kat2=All[/url]https://Have you looked for a servic...kat2=All[/url]
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I found this, but it doesn't look right:
[url]https://pl.aliexpress.com/item/1005002759685951.html[/url]https://I found this, but it doesn't...951.html[/url]
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B2F5dc = MT3540-F25
[URL]https://www.lcsc.com/datasheet/lcsc_datasheet_2012102241_XI-AN-Aerosemi-Tech-MT3540-F25_C883495.pdf[/URL] (datasheet)
[URL]https://pl.aliexpress.com/item/1005002266408876.html?gatewayAdapt=glo2pol[/URL] (photo of MT3540-F25)
[url]https://aliexpress.ru/popular/mt3540.html[/url] (photo of MT3540-F23)https://B2F5dc = MT3540-F25<br /> <b...=glo2pol[/URL]
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Can you determine the pinout?
It might also help to measure the feedback resistors, as this could tell us the FB reference voltage. Common examples are 0.6V and 0.8V.
It would also help to know which chips are powered by this IC, as that might tell us the output voltage.
Lastly, it might be worth identifying the manufacturers of other ICs, in case the designer used the same IC maker.
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Is B2F the Vdd supply for the SoC (CMS8S6990)?
[url]https://www.semiee.com/file2/b200ba70e49aeb9465d9f93e8eaf7196/Cmsemicon/Cmsemicon-CMS8S3680_69xx_V1.0.6.pdf[/url]https://Is B2F the Vdd supply for th....0.6.pdf[/url]
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S87 = STI9287
[url]https://datasheet.lcsc.com/lcsc/2009271137_TMI-STI9287_C842664.pdf[/url] (datasheet)
[url]https://www.taobao.com/list/item/744174915443.htm[/url] (photo)https://S87 = STI9287<br /> <br /> [...[/url] (photo)S87 = STI9287
[url]https://datasheet.lcsc.com/lcsc/2009271137_TMI-STI9287_C842664.pdf[/url] (datasheet)
[url]https://www.taobao.com/list/item/744174915443.htm[/url] (photo)S87 =
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03XX SPP2303S23RG SOT-23-3L 3 P-Channel Enhancement Mode MOSFET
[url]https://www.cheertech.com.tw/Syncpower/Data%20sheet/SPP2303.pdf[/url]
04XX SPN2304S23RG SOT-23-3L 3 N-Channel Enhancement Mode MOSFET
[url]http://www.cheertech.com.tw/Syncpower/Data%20sheet/SPN2304.pdf[/url]
[URL]http://markingcodes.com/search/c/03xx[/URL]
[URL]http://markingcodes.com/search/c/04xx[/URL]https://03XX SPP2303S23RG SOT-23-3L .../> <br /> 04XX...
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