Samsung DW21G5VDX, DW21G5VDX-SED Troubleshooting

Troubleshooting

Samsung Electronics 5-1

5. Troubleshooting

5-1 No Power (No Picture on)

Yes

Check

both terminal voltages

of C815 (130V)

Check both

terminal voltages of

C804 (280~300V).

Check D801S

F801,Q801.

No

Is IC801S Pin 3

19~22V?

Check IC801S

Check/Replace

DZ801,DZ808,

DZ802,PC801S

No

Yes

No

Yes

Check

Voltage of 80V, 15V, 20V,

13V power line..

Check whether
each power line
is short or open.

No

No

Yes

Is IC901

Pin 64 Voltage 5V?

Check H.V SYNC on

IC901 Pins 36,37

Check/Replace

IC901.

Check

IC901 Pin 20 is High

when power is On.

Check/Replace

IC902.

Check the voltage

of TU01S.

Yes

Yes

No

No

Yes

5-2 No Power (No LED On)

Troubleshooting

5-2 Samsung Electronics

Check IC901 #31

No

Check IC901 #52, #53

Check after Bus

Line Open

Yes

Yes

Yes

Yes

Check IC904

No

Check another I2C

Bus Line.

No

No

Check IC805

Check D805

Check IC801S

Replace

Replace

Yes

No

No

Check IC901 #50~52

Replace

IC901

No

5-3 No RF Picture / Sound

Troubleshooting

Samsung Electronics 5-3

Check IC901 #52, #53

Check chroma inodule

H-out

Yes

Yes

Yes (No Sound)

Check Tuois

SDA,SCL

Check Q402,Q401

Replace

Replace

Replace

No

No

No

No

Check

c/module, R405,R435

R424,R425,D411,

D401

Yes

Check Tuner SIF

output?

No

Check Sound module

B+, 5V,8V

Check 8V, 5V

Power Line

No

No Picture

Yes

Yes

Yes

Sound Module Replace

Replace

Replace

Troubleshooting

5-4 Samsung Electronics

5-4 DVD PLAY NO PICTURE

Check CN201

y-cut,c-out

No

Check chroma module

No

Yes

Check DVD

Replace

Check CN201

D-L, D-R

No

Check Sound module

No

Yes

Check DVD

Replace

5-5 DVD PLAY NO SOUND