SAMSUNG SP-42W4HPR Service Manual Troubleshooting

Troubleshooting

Samsung Electronics 5-1

5. Troubleshooting

5-1 Convergence Misaligned

Check CNZ02 out pin

(BV, BH, RV, RH, GV, GH)

Normal

Check FD101S,FD102S

on the sub board

Normal

Check the input/output

of ICZ103,ICZ104

on the sub board

Normal

Abnormal

Abnormal

Check the input

voltage of main

CN801 and sub CN801

Check connectors

CNZ01

Replace FD101S,FD102S

and check associate circuits

Abnormal

Check the output from

CG-MDL and FD855S,

FD802S on the SUB PCB

Normal

Check the output from

ICZ03, ICZ04

on the sub board

Normal

Check DY

Abnormal

Check the circuits

related to ICZ103,ICZ104

Abnormal

Check the circuits related to

CNZ02,CNZ04,CNZ05

5-2 No Sound

Troubleshooting

5-2 Samsung Electronics

Abnormal

Check the input/output

circuits of IC601

Normal

Check IC603

Normal

Check IC602

Abnormal

Abnormal

Check the output

volume level of

MAIN CN601

Check the circuits

related to IC601

Check the circuits

related to IC601

Normal

Check Speaker

Normal

Check IC605

Normal

Check various input circuits

Abnormal

Abnormal

Check the circuits

related to IC602

Check the circuits

related to IC605