Samsung LTM1555(B), ES15U specifications No Sound

Page 16

5 Troubleshooting

5-4 No Sound

Does the signal appear at

Pin 67 (Tuner sound signal) and

Pin 57, 56 (PC sound) and Pin 51, 50 (VCR sound) of IC53 (MSP3421G)?

Yes

Does the signal appear at Pin 27,

28 of IC53 (MSP3421G)?

Yes

Does the signal appear

at L53~L56?

Yes

Replace the speaker.

CONFIDENTIAL

No	Check CN11 (PC conector)
	Check CN11 (PC conector)
	and CN26(VCR connector).

No

Check IC32 and related circuit.

No

Check IC55 (Audio amp) and related circuit.

5-4	LTM1555(B)/LTM1755(B)

Image 16

Contents TFT-LCD Monitor BN82-00071A-00 Precautions Safety PrecautionsServicing Precautions Electrostatically Sensitive Devices ESD PrecautionsProduct Specifications SpecificationsPin Assignments Sync Type Pin No Separate H/VTiming Chart IBM VesaMemo Disassembly and Reassembly DisassemblyReassembly Alignments and Adjustments General Alignment InstructionAdjustment Instruction Service functionTroubleshooting No PowerNo Video PC Signal No Picture TV, Video, S-Video No Sound Exploded View and Parts List 1 LTM1555B 2 LTM1555B Front 3 LTM1555B Rear 3 LTM1555B Stand 1 LTM1755B 2 LTM1755B Front 3 LTM1755B Rear 3 LTM1755B Stand Electrical Parts List PCB INDUCTOR-AXIAL SCREW-TAPTITER27 ES15UO ES15UO SNALoc. No Code No AL,SMD CERAMIC,CHIPCERAMIC,CHIP AL,SMD Organic CERAMIC,CHIP AL,SMD C43 C533 C619 INDUCTOR-SMD 74F14,INVERTER,SOP,14P,150MILINDUCTOR-SMD Coil CHOKE-SMD PCB Main TR-SMALL Signal Chip R128 R240 R330 R383 R461 R549 STD+C/R +C/RAssy Cover Rear Assy REAR-COVER Bracket Vesa COVER-REAR Assy LCD Assy ChassisLever Bottom Label BAR Code BOX CBF SignalES15UO SNA LXA410TLMU,PE,-,WHITE Gasket ES17UO15P,3R,FEMALE,ANGLE,AUF 2P,-,AU,WHT/REDCORE-FERRITE Bead AL,SMD CERAMIC,CHIP C153 AL,SMD CERAMIC,CHIP CERAMIC,CHIP AL,SMD C510 C610 CN62 IC-CMOS Logic 2007-000132 R15 R2554 R349 R436 R610 R621 Assy LCD Assy Chassis Assy P/MATERIAL GH17LSEOS/NIKE,EGI,T1.2 VIRTUAL,HDTV,ABS V0,GR806PM170MP,PE-LD,PE-HD,-,WHITE M170MP,PE-HD,-,BLUEBlock Diagram Block Diagrams Wiring Diagram CN12 CN11 CN51 CN24 CN25Schematic Diagrams Schematic Diagrams Power Eosventsc Part Schematic Diagram10-2 Micom / Jack Part Schematic Diagram Hpdr10-4 Scalar Eosventsc Part Schematic Diagram JAG10-6 Video Eosventsc Part Schematic Diagram FBL1 FBL2 RIN1 GIN110-8 Audio Part Schematic Diagram OUT GND10-10 Lvds & RAM Eosventsc Part Schematic Diagram VDD4 VSS110-12 Panel Description SECMemo Copyright