Technical description and composition of the SONY KDL-46V5500 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-46V5500
Chassis / Version: EX2L Coriande
Panel: LTY460HB11
T-CON: NP_HAC2LV1.1
Power Supply (PSU): 1-878-599-11 - A1660728B
PWM Power: CXD9969P, MIP2H2, LX1692, BA2901SF
MOSFET Power: 2SK3934 (PFC), TK8A50D
MainBoard: 1-878-942-12 BA board
IC MainBoard: CPU: MC10147F1 410, MB91F313A, NAND Flash: K9F1208UOC, EEPROM: 24C32
Tuner: BTD-HF422T
Technical Specifications KDL-46V5500
SONY KDL-46V5500
General recommendations for repairing TV LCD
It is advisable to start the repair and diagnostics of the SONY KDL-46V5500 TV with a careful external examination of the internal and external elements, including case parts, a display, buttons and cables. In some cases, visible external damage to the elements can suggest directions for troubleshooting and localizing the defect before starting the necessary measurements at the control points of the nodes of electronic circuits. In some cases, faulty elements can be seen with the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
In the case when the KDL-46V5500 does not turn on, does not respond to the remote control and buttons on the front panel, does not blink light bulbs and does not show any signs of operability, most likely in this case the power module is faulty. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the likelihood of an avalanche or thermal breakdown.
Power switches in flyback converters fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
Sometimes the SONY KDL-46V5500 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including the power supply unit (power supply unit).
Repair of the inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety during depressurization of lamps, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits to be able to make the necessary measurements at the control points of the circuit.
When diagnosing with the protection off, special precautions must be taken, because there is a risk of failure of the power elements of the inverter. After diagnosis, it is imperative to restore the protection circuits for the inverter to operate normally.
Repair of the BA2 motherboard must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Owners and users of the SONY KDL-46V5500 TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
Service manual / schematic diagram -------------> Sony KDL-32/37/40/46/52V5500 CHASSIS EX2L-Coriande
PSU / schematic diagram -------------> Sony 1-878-599-11 IP2 Power supply
The appearance of MainBoard 1-878-942-12 is shown in the figure below:1-878-942-12
1-878-942-12 can be used on TVs:
SONY KDL-46V5500 (Panel LTY460HB11), SONY KLV-32V550A (Panel LTY320HA03 A06), SONY KLV-40V550A (Panel LTY400HA12), SONY KLV-52V550A (Panel LTY520HB11), SONY KDL-46V5610 (Panel LTY460HB10), SONY KDL-32V5610 (Panel LTY320HA02), SONY KDL-32V5500 (Panel LTY320HA02).
The appearance of the power supply
Main features of the device SONY KDL-46V5500:
Installed matrix (LCD-panel) LTY460HB11.
The matrix control uses the Timing Controller (T-CON) NP_HAC2LV1.1.
The necessary supply voltages for all nodes of the SONY KDL-46V5500 TV are generated by the power module 1-878-599-11, or its analogs using microcircuits CXD9969P, MIP2H2, LX1692, BA2901SF and power switches of the type 2SK3934 (PFC), TK8A50D.
MainBoard - the main board (motherboard) is a module 1-878-942-12, using CPU chips: MC10147F1 410, MB91F313A, NAND Flash: K9F1208UOC, EEPROM: 24C32 and others.
The BTD-HF422T tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: S-LCD
Model: LTY460HB11
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Display Colors: 1.07B (10-bit), CIE1931 72%
Response Time: 10/6 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Balance board)
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V