Technical description and composition of the SONY KDL-32P2520 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-32P2520
Chassis / Version: SE-1
Panel: T315XW02 V.1.
T-CON: T315XO2 V0, 05A30-1A
Inverter (backlight): DARF 4H.V0708.401 6 lamps DARFON 4H.V0708.401 / C
PWM Inverter: OZ964SN
MOSFET Inverter: P5504EDG NICOS
Power Supply (PSU): 1-870-685-21 A-1189-415-A G1 CMKI-81X
PWM Power: LM324DG, LM393, MCZ3001DB (18) = CXD9841P, STR-A6169 (8)
MOSFET Power: 2SK3469
MainBoard: 1-872-686-11 BDTR2, A-1242-773-A
IC MainBoard: UPD61123F1-100-KA3-A HY27US08281 EDD1216AATA-6B-E
Technical Specifications KDL-32P2520K
SONY KDL-32P2520
General recommendations for repairing TV LCD
Diagnostics of the malfunction of the TV SONY KDL-32P2520, like all others, it is advisable to start with an external examination of possible changes, both external and internal elements. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
Sometimes the SONY KDL-32P2520 TV simply does not turn on. No control lights on the front panel are lit or blinking, the TV does not respond to the remote control and does not make any sounds or any signs of life when turned on. The most likely cause of the malfunction is the failure of the general power module G1 A-1189-415-A CMKI-81X. In this case, first of all, it is necessary to check the fuse at the mains input. 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 N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Possible options.
In most cases, a breakdown of the N-Fet converter key does not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible PWM chip LM324DG, LM393, MCZ3001DB (18), STR-A6169 (8) from the manufacturer.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
If the SONY KDL-32P2520 has no image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Diagnostics of the DARF 4H.V0708.401 inverter also their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
In such cases, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
Repair or diagnostics of the motherboard BDTR2, A-1242-773-A, p / n 1-872-686-11 should be started by checking the power stabilizers. If necessary, you should update the software (software). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - UPD61123F1-100-KA3-A HY27US08281 EDD1216AATA-6B-E with new or obviously working ones.
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.
Service manual / schematic diagram -------------------> Sony KDL-26P2520, KDL-32P2520, KDL-26P2530, KDL-32P2530, KDL-40P2530 CHASSIS SE-1
PSU schematic diagram -------------------> 1-870-685-21
The appearance of MainBoard 1-872-686-11 is shown in the figure below:1-872-686-11
1-872-686-11 can be used in televisions:
SONY KDL-26P2530 (Panel T315XW02 V1), SONY KDL-32P2520 (Panel T315XW02 V.1.), SONY KDL-32P2530 (Panel T315XW02 V.1), SONY KDL-40P2530 (Panel LTA400WT-L05 1-802-386-21), SONY KDL-40U2520 (Panel LTA400WT-L05), SONY KDL-40U2530K (Panel LTA400WT-L05).
The appearance of the power supply
Main features of the device SONY KDL-32P2520:
Installed matrix (LCD panel) T315XW02 V.1 ..
The matrix control uses the Timing Controller (T-CON) T315XO2.
A DARF inverter is used to power the backlight, controlled by the OZ964SN PWM controller. As power elements of the inverter, keys of the type P5504EDG NICOS are used.
The necessary supply voltages for all nodes of the SONY KDL-32P2520 TV are generated by the power module 1-870-685-21, or its analogs using microchips LM324DG, LM393, MCZ3001DB (18) = CXD9841P, STR-A6169 (8) and power switches of the type 2SK3469.
MainBoard - the main board (motherboard) is a module 1-872-686-11, using chips UPD61123F1-100-KA3-A HY27US08281 EDD1216AATA-6B-E and others.
Additional technical information about the panel:
Brand: AUO
Model: T315XW02 V1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
