Author Topic: Identifying Bose radio components  (Read 332 times)

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Offline tekkyTopic starter

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Identifying Bose radio components
« on: May 05, 2024, 06:21:03 pm »
On the AWRCC1 wave radio the larger components have sufficient markings to identify them but there are several sot23-3 parts that remain a mystery.
If I can fill out my list I'll post it.
 
Main board 272146-001 parts:
marking ;location - pkg, desc
---------------------------------------
LA1837 ;1 on main bd s1 - 30pin MFP30SD, AMFM tuner preamp
LC72121M ;1 on main bd s1 - 24pin MFP24S, PLL freq tuner p15=dgnd, p18=vdd 3.6v, p24=xout 7.2mhz
HCF4052 ;2 on main bd s2 - 16pin SO16, 4:1 dual analog mux p16=vdd 4-20v, p8=gnd
24C01W6 ;1 on main bd s2 - 8pin SO8, I2C memory 1k bit
TL072C ;1 on main bd s2 - 8pin SO8, dual amp
1V02H ;1 on main bd s1 - 8pin SO8, dual varicap diodes

TDA7376B ;1 on main bd s1 - MW15, audio amp P8=gnd, p3,13=vcc, p15=out2, p12=in2
C1173Y ;1 on main bd s1 - TO220, power NPN p1=B, p2=C, p3=E
A473Y ;1 on main bd s1 - TO220, power PNP "
KSH210 ;1 on main bd s1 - D-PAK, power PNP "

'K4A (R0)' ;2 on main bd s1 - 6pin sot363, dual npn DMMT3904W
'K1N (R8)' ;3 on main bd s1 - 3pin sot23, npn MMBT3904
'K3N (R8)' ;1 on main bd s1 - 3pin sot23, pnp MMBT3906
'KJE (R9)' ;2 on main bd s1 - 3pin sot23, dual diode BAV99
'K72 (R9)' ;2 on main bd s2 - 3pin sot23, N-ch fet 2N7002

Unknown:

'BDR4N (w/overscore on '4') ;2 on main bd s1 - 3pin sot23, ?
'B L.' (w/dot under 'B') ;1 on s1 main bd - 3pin sot23, ?
'B _Y.' ;2 on main bd s1 - 3pin sot23, ?
'J-4:' (w/dot under 'J') ;1 on main bd s1 - 3pin sot23, ?
'B L:' (w/dot under 'B') ;1 on main bd s2 - 3pin sot23, ?
'8E429' ;1 on main bd s2 - 4pin sot89, 9vreg? poss KIA78L09F?
'8A?EJ' ;1 on main bd s2 - 4pin sot89, 5vreg? poss KIA78L05F?

'E3Y' ;1 on main bd s2 - 2pin SOD123 diode on bose link?
'B120';1 on main bd s1 - 2pin SMA 1A Schottky rectifier diode B120/B

 


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