Sony KV-T29SN81 service manual Troubleshooting

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Additional Information

Troubleshooting

If you have any problems, read this manual again and check the countermeasure for each of the symptoms listed below.

If the problem persists, contact your nearest authorized service center or dealer.

Snowy picture

Noisy sound

/Check the antenna.

/Check the antenna connection on the TV and on the wall.

Dotted lines or stripes

/This may be caused by local interference (e.g. cars, neon signs and hair dryers). Adjust the antenna for minimum interference.

Double images or “ghosts”

/This may be caused by reflections from nearby mountains or buildings. A highly directional antenna may improve the picture.

Notes

When you switch on the TV, you may hear the “boon” sound that is caused by the demagnetization of the TV. This does not indicate a malfunction.

The picture color may become abnormal if you change the direction of your TV. To obtain the normal picture color , press POWER on the TV to switch off the TV for five minutes and then switch it on again.

12 Additional Information

No picture

No sound

/Press POWER.

/Check the antenna connection.

/Check the VCR connections.

/Check the power cord connection.

/Check the standby mode.

Good picture

No sound

/Press VOLUME +.

/Press MUTING.

/Press A/B/ENLARGE

No color

/Adjust the COLOR level in the on-screen display.

/Check the COLOR SYSTEM setting.

TV cabinet creaks

/Even if the picture or the sound is normal, changes in the room temperature sometimes make the TV cabinet expand or contract, making a noise. This does not indicate a malfunction.

Note on the remote commander

The supplied remote commander is used on several models of the TV. If you do not find instructions for some controls that are on the remote commander, that means your TV does not employ the features of those controls, e.g. TEXT.

Note on the TV SYSTEM button

The TV SYSTEM button is not used on your TV.

WARNING

Do not install the appliance in a confined space, such as a bookcase or built-in cabinet.

KV-T29SN81RM-870

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Contents Trinitron Color TV Specifications KV-T29SN81Disassembly Table of ContentsDiagrams Electrical Parts List SET-UP AdjustmentsSelf Diagnosis Function Flickering FrequencySection General Connections Presetting channels Adjusting the picture and sound Selecting a stereo or bilingual program Troubleshooting Board Removal Service Position Section DisassemblyRear Cover Removal F1 Board Removal Replacement of Parts Demagnetization Coil Removal Replacement of Light Guide Power Button∙ Removal of ANODE-CAP ∙ Removing Procedures Picture Tube RemovalSection SET-UP Adjustments Beam LandingConvergence Horizontal and Vertical Static ConvergenceBlue Red Neck assy VM board Dynamic Convergence Adjustment Preparation Focus Adjustment G2 Screen and White Balance AdjustmentsSection Circuit Adjustments Adjustments with CommanderAdjustment Method Adjustment Item Table No OP0 * Input data are different according to models Item Number 00 Memo Semiconductors EL1Z GP08DExploded View SectionChassis Electrical Parts List PLUG, Connector 6P PIN, Connector 4PPLUG, Connector 5P CONNECTOR, Board to Board 12PDiode EL1Z Diode RU4DSDiode D1NL20-TA Diode LNK0220022GTransistor 2SC3209LK Transistor 2SC2410SNTransistor 2SA1091-O Transistor 2SC4927-01Metal Chip WirewoundCarbon FusibleVariable Resistor RES, ADJ, Carbon 2.2M SwitchSolid RES, ADJ, Carbon 470KSawf Transformer REF. NO. Part no Description Remark Spark GAPGAP, Spark Surface Wave Filter TRANSFORMER, Line FilterIC CXA1110BS Carbon Coil SwitchFilter IC MSP3410D-PP-B4Transistor 2SC2611 SOCKET, CRT CoilCarbon Variable Resistor FUSE, TIME-LAG 4A/250V Resistor CLIP, Fuse CapacitorFuse Diode RD3.6M-B2Transistor 2SD774-34 ConnectorPLUG, Connector 7P Crystal VibratorTransistor 2SA1837 IC NJM2903DIC NJM2904D Coil Transistor 2SC4793Battery COVER, Remote Commander Accessories and Packing MaterialsRemote Commander Miscellaneous COIL, Demagnetization