Technical description and composition of the SONY KDL-52EX700 TV, panel type and applicable modules. The composition of the modules.SONY LED
Model: KDL-52EX700
Chassis / Version: AZ1L_3A-0
Panel: LK520D3LB1S
T-CON: RUNTK4353TPZC
LED driver (backlight): integrated into PSU
Power Supply (PSU): 1-881-955-12 GE2 board A-1754-368-B
PWM Power: MIP2H2 (7), CXA3809M, LV5768M
MOSFET Power: 2SK4096 K15A60D
MainBoard: 1-881-636-22 BAL // A1754490A
IC MainBoard: MC10161F1-420, TA55707, MB91F313A
Tuner: SUT-AE101T (10)
Technical Specifications KDL-52EX700
SONY KDL-52EX700
General repair guidelines for TV LCD LED
Repair of the SONY KDL-52EX700 TV is advisable to start with a careful external examination of both internal and external elements. Visible damage to elements can sometimes indicate the direction of the search for a defect even before the necessary measurements are taken. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, it does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the GE2 A1754-368-0 power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, which is typical for certain SONY models. In the general case, first of all, it is necessary to check the electrolytic capacitors of the filters of the secondary rectifiers and the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Options 2SK4096 K15A60D are possible.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the MIP2H2 PWM controller microcircuit are subject to verification (7), which it is desirable to verify by replacement.
If the SONY KDL-52EX700 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the backlight circuits of the LK520D3LB1S panel is likely. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
A malfunction in the backlight circuits often occurs due to an open in the power circuit of the LED lines. It is necessary to disassemble the panel and check the LEDs themselves, the soldering of their conclusions, as well as the reliability of the connections in the connectors and the soldering of the conclusions of the connectors.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Diagnosis and repair of the BAL motherboard is carried out by checking the performance of stabilizers or power converters of the module chips. In some cases, a software update is required.
If it is not possible to replace the MB board (SSB), you need to check the health of its elements - TA55707 MB91F313A. Defective components should be replaced.
If you suspect a malfunction of the SUT-AE101T tuner (10), first of all, you need to make sure that the voltage of the varicaps (30-33V) is present on the corresponding output of the tuner, as well as other voltage supplying it.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
1. Service Manual 57 pages of 2010 for the KDL-32EX700, KDL-32EX700, KDL-40EX700, KDL-40EX700, KDL-40EX703, KDL-46EX700, KDL-46EX700, KDL-46EX701, KDL-46EX701, KDL-46EX301 , KDL-52EX700, KDL-52EX700, KDL-52EX701, KDL-52EX701, KDL-52EX703, KDL-60EX700, KDL-60EX700, KDL-60EX701, KDL-60EX701, KDL-60EX703
Service manual / schematic diagram ------------> Sony KDL-32/40/46/52/60EX700, KDL-46/52/60EX701, KDL-40/46/52/60EX703 CHASSIS AZ1-L
2. Service Manual 38 pages of 2010 for the models KDL-32EX700, KDL-32EX700, KDL-40EX700, KDL-40EX700, KDL-40EX703, KDL-46EX700, KDL-46EX700, KDL-46EX701, KDL-46EX701, KDL-46EX301 , KDL-52EX700, KDL-52EX700, KDL-52EX701, KDL-52EX701, KDL-52EX703, KDL-60EX700, KDL-60EX700, KDL-60EX701, KDL-60EX701, KDL-60EX703
3. Service Manual 68 pages for the models KDL-32EX700, KDL-32EX701, KDL-32EX703, KDL-32EX705, KDL-32EX706, KDL-32EX707, KDL-32EX709, KDL-40EX700, KDL-40EX701, KDL-40EX703 40EX705, KDL-40EX706, KDL-40EX707, KDL-40EX708, KDL-40EX709, KDL-46EX700, KDL-46EX701, KDL-46EX703, KDL-46EX705, KDL-46EX706, KDL-46EX707, KDL-46EX707, 46D70L, 46D70L, 46L KDL-52EX700, KDL-52EX703, KDL-52EX705, KDL-60EX700, KDL-60EX703, KDL-60EX705
The appearance of MainBoard 1-881-636-22 is shown in the figure below:1-881-636-22
1-881-636-22 can be used in TVs:
SONY KDL-52EX700 (Panel LK520D3LB1S), SONY KDL-32EX700 (Panel T315HW07 V.1).
The appearance of the power supply
Main features of the device SONY KDL-52EX700:
Installed matrix (LED-panel) LK520D3LB1S.
The matrix control uses the Timing Controller (T-CON) RUNTK4353TPZC.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the SONY KDL-52EX700 TV are generated by the power module 1-881-955-12, or its analogs using microchips MIP2H2 (7), CXA3809M, LV5768M and power switches of the type 2SK4096 K15A60D.
MainBoard - the main board (motherboard) is a module 1-881-636-22, using microchips MC10161F1-420, TA55707, MB91F313A and others.
Tuner SUT-AE101T (10) provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SHARP
Model: LK520D3LB1S
Type: a-Si TFT-LCD, Panel
Diagonal size: 52 inch
Resolution: 1920x1080, FHD
Display Mode: ASV, Normally Black, Transmissive
Active Area: 1152x648 mm
Surface: Antiglare (Haze 7.3%), Hard coating (3H)
Brightness: 460 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 1.06B (8-bit + FRC)
Response Time: 4 (G to G)
Frequency: 240Hz (60Hz Input)
Lamp Type: WLED Without Driver
Signal Interface: LVDS (2 ch, 10-bit), 55 pins
Voltage: 12.0V