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SMD SOT23 Diode and transistor/MOSFET identification

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asimov_18

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Dear Members,
I am trying to repair a Toshiba LCD TV CCFL backlight circuit, I found 4 sot components which I am finding tricky to identify, any inputs from the members would be appreciated.

The 4 parts are as follows
1) SOT23 SMD code CA66 (possibly a diode as two legs are connected on the SMD pad ).
2) SOT23 SMD code MU I(seems like roman numeral I and has a dot under M).
3) SOT23 SMD code 7K2U (possibly a transistor or MOSFET likeley to be a transistor but not sure).
4) SOT23 SMD code W1A (possibly a transistor).

Anlernatively if anyone has a URL for finding scheamtics for TOSHIBA LCD TV 40PB20E it would be highly appreciated. I wish manufacturers released schematics/service manuals for discontinued products after a few years.

Asimov
 

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