SONY
Model: KLV-17HR3
Chassis / Version: WA1
Panel: LTA170W2-L01
T-CON: 170W2C4LV1.1
Inverter (backlight): SFIV17CCAS-03 1-863-883-11 172486911
Power Supply (PSU): Adapter 16.5 V
MainBoard: 1-863-275-16 & 1-863-279-13
IC MainBoard: MSP3410G, CXA2163AQ, MC74LVX8053, PCF8574TS-T
Control: IR: 1-863-528-11 (1-724-775-16) A-1066-319-A
Technical Specifications KLV-17HR3
SONY KLV-17HR3
General recommendations for repairing TV LCD
Possible manifestations of defects
- SONY KLV-17HR3 does not turn on, the indicators on the front panel do not light up and do not blink. The TV does not respond to the control buttons and the remote control.
With such manifestations, the Adapter power module usually fails.
The external adapter 16.5 V power supply is not always subject to repair, especially since the owner can purchase it independently. But, in some cases, it makes sense to open it and eliminate the simple typical defects inherent in converters in pulsed sources. It is then necessary to measure its output voltages and, if they are absent, it is necessary to check the power switches and rectifier diodes of the converters for a short-circuit probability.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers, in the absence of visible damage or frank short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply to the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the 1-863-275-16 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its chips MSP3410G, CXA2163AQ, MC74LVX8053, PCF8574TS-T and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
TV users and owners need to remember that attempts to self-repair a SONY KLV-17HR3 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
Service Manual with Schematic Diagram 48 pages 2004 model KLV-17HR3
Service manual / schematic diagram ------------------> SONY KLV-17HR3 Chassis WA1
The appearance of MainBoard 1-863-275-16 is shown in the figure below:1-863-275-16
Main features of the device SONY KLV-17HR3:
Installed matrix (LCD panel) LTA170W2-L01.
The matrix control uses the Timing Controller (T-CON) 170W2C4LV1.1.
To power the backlight used inverter SFIV17CCAS-03.
To power all the internal components of the SONY KLV-17HR3 TV, an external adapter type 16.5 V is used.
MainBoard - the main board (motherboard) is a module 1-863-275-16, using microchips MSP3410G, CXA2163AQ, MC74LVX8053, PCF8574TS-T and others.
The SONY KLV-17HR3 TV with an LTA170W2-L01 LCD display, a diagonal size of 17 "is a 16: 9 aspect ratio. The brightness of the screen is 450 cd / m² by CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 400: 1. The input analog video signal can be processed in PAL, SECAM, NTSC systems.The graphic processing and image formation of the digital signal occurs in the standards 480i, 480p, 576i, 576p.
The power of the sound speaker system 6 W (2x3 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, SCART, RGB. An output for connecting headphones is provided.
Overall dimensions: with stand 461x397x150 mm, without stand 461x363x91 mm.
TV Weight: with stand: 5.7 kg, without stand: 5.1 kg.
Attention! The LTA170W2-L01 panel of the SONY KLV-17HR3 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!