Samsung LCD
LN32B360C5DXZA ver.SG05
BN44-00289B Power Board
I get No standby light on tv, and backlight does Not come on with logic board term CN802 disconnected. Im get voltage readings but None at all on CN802 terminal pins.
My component level knowledge is basic, so this will be a lession for me. I id the transistor pins G D S from schematic but got diff readings reversing polarity, idk which polarity is relavant so i took both directions.
Any advice on which direction i should research into first based on the symptom issues is appreciated, i don't know where to start. I also included a closeup img on part of the pcb, idk if what im seeing is just part of a coating on the boatd or liquid damage? Would like your opionion as i have no knowledge reference.
Fuses are ok 0.3 ohm
Resistance reading with Fuse FM802S removed suggested in this thread. Tho my symptom is different i checked anyway but dont know what its supposed to read.
Samsung LN32B360 No Power....Diodes ok
Fuse > P-GND - /
P-GND > Fuse - 550 ohm
Voltages
CN802 Terminal, All pins read 0 vdc
S-GND > P-GND - 60 vdc
Cap CP815 - 167 vdc
Cap CM808 - 13.5 vdc
ICE UM801S pins - vdc
1 - 0
2 - 4.8
3 - 0
4 - 166
5 - 166
6 - 0
7 - 13.5
8 - 0
Transistors
QP802S
+ - ohms
D S /
S D 470
G S /
G D /
S G 530
D G /
QI820 mimics QI821
+ - ohms
D S /
S D 420
G S 675
G D 1460
S G 690
D G /
Diodes ohm - reverse
DM801 490 - /
DM802 560 - /
DM803 580 - /
DM852 460 - /
Zeners ohm - reverse
ZD801 685 - /
ZD803 730 - /
ZD804 300 - 710
ZD804 725 - / (note R climbed tho like a cap)
Resistors spec - read
RM869 0.5 - 0.7
RM811 39K - 39K
LN32B360C5DXZA ver.SG05
BN44-00289B Power Board
I get No standby light on tv, and backlight does Not come on with logic board term CN802 disconnected. Im get voltage readings but None at all on CN802 terminal pins.
My component level knowledge is basic, so this will be a lession for me. I id the transistor pins G D S from schematic but got diff readings reversing polarity, idk which polarity is relavant so i took both directions.
Any advice on which direction i should research into first based on the symptom issues is appreciated, i don't know where to start. I also included a closeup img on part of the pcb, idk if what im seeing is just part of a coating on the boatd or liquid damage? Would like your opionion as i have no knowledge reference.
Fuses are ok 0.3 ohm
Resistance reading with Fuse FM802S removed suggested in this thread. Tho my symptom is different i checked anyway but dont know what its supposed to read.
Samsung LN32B360 No Power....Diodes ok
Fuse > P-GND - /
P-GND > Fuse - 550 ohm
Voltages
CN802 Terminal, All pins read 0 vdc
S-GND > P-GND - 60 vdc
Cap CP815 - 167 vdc
Cap CM808 - 13.5 vdc
ICE UM801S pins - vdc
1 - 0
2 - 4.8
3 - 0
4 - 166
5 - 166
6 - 0
7 - 13.5
8 - 0
Transistors
QP802S
+ - ohms
D S /
S D 470
G S /
G D /
S G 530
D G /
QI820 mimics QI821
+ - ohms
D S /
S D 420
G S 675
G D 1460
S G 690
D G /
Diodes ohm - reverse
DM801 490 - /
DM802 560 - /
DM803 580 - /
DM852 460 - /
Zeners ohm - reverse
ZD801 685 - /
ZD803 730 - /
ZD804 300 - 710
ZD804 725 - / (note R climbed tho like a cap)
Resistors spec - read
RM869 0.5 - 0.7
RM811 39K - 39K
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