Technical description and composition of the SONY KLV-32EX300 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KLV-32EX300
Chassis / Version: AZ1-AL
Panel: LTY320AP04
T-CON: 320AP04S4LV1.7 LAXC021T0B-01, MAX9694E, 24C64WP, MAX17122, MAX17121E, 17814HS
Inverter (backlight): SSI320_4UG01 LJ9702545A 1-857-634-11
PWM Inverter: SSI091ASN (24pin)
Power Supply (PSU): PSC10308E G2LE
PWM Power: SSC9513 (PWM Resonant), A6079M, R2A20113 (PFC)
MainBoard: BAA board
IC MainBoard: CPU: MT5388GFMG 1018-AMSL; EEPROM: 24C128; SOUND: TPA3110D2;
Tuner: TEQE8-L01A
Appearance
SONY KLV-32EX300
General recommendations for repairing TV LCD
Repair of electronic devices, including the SONY KLV-32EX300 TV, it is advisable to start with an external examination of its external and internal elements. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
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, does not make any sounds or any signs of operability when turned on, there is a certain probability that the power module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of standby power. After checking the mains fuse and power elements of the primary power supply circuit, it should also check the absence of a short circuit in the loads of the secondary rectifiers.
If the power keys of the pulse converter are not equal, you should pay attention to other elements in their bundling, which may be the result or cause of their breakdown.
If the SONY KLV-32EX300 does not have an image, but there is sound and the TV is controlled by the remote control, a malfunction in the display backlight nodes is likely. The lamps or the power converter - inverter 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 inverter, and check the LCD lamps by connecting external and obviously serviceable for diagnosis to the connectors. It is necessary to take into account that in cases of inverter protection shutdown (in order to be able to diagnose) there is a risk of failure of the inverter power elements and take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Repair of the BAA motherboard should begin with the diagnosis and verification of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. If it is not possible to replace the MB board (SSB), you need to check the health of its elements - CPU: MT5388GFMG 1018-AMSL; EEPROM: 24C128; SOUND: TPA3110D2; . Defective components should be replaced.
If there is no reception of television channels, but the TV is working properly from external devices, first of all it is necessary to check the supply voltage of the TEQE8-L01A tuner and update the software.
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 KLV-22EX300, KLV-26EX300, KLV-32EX300, KLV-32EX300B, KLV-32EX400, KLV-32EX400/L, KLV-32EX400/R, KLV-40EX400, KLV-46EX400 chassis AZ1-AL
The appearance of the MainBoard BAA is shown in the figure below:BAA
BAA can be used in TVs:
SONY KLV-22BX300 (Panel T216XW01 V.3), SONY KLV-22BX301 (Panel 22 "), SONY KLV-26BX301 (Panel V260B3-L05 Rev.C1), SONY KLV-26NX400 (Panel V260B3-L05 Rev.C1), SONY KLV-32BX300 (Panel LTY320AP04), SONY KLV-32BX301 (Panel LTY320AP05 006), SONY KLV-32NX500 (Panel T315HW04 V.0), SONY KLV-40BX400 (Panel LTZ400HM01 A13), SONY KLV-40BX401 (Panel LTY400HM01 A05 ), SONY KLV-32EX300 (Panel LTY320AP04), SONY KLV-40NX500 (Panel T400HW03 v.0).
The appearance of the power supply
Main features of the device SONY KLV-32EX300:
Installed matrix (LCD panel) LTY320AP04.
The matrix control uses the Timing Controller (T-CON) 320AP04S4LV1.7.
The SSI320_4UG01 inverter is used to power the backlight, controlled by the SSI091ASN PWM controller (24pin).
The necessary supply voltages for all nodes of the SONY KLV-32EX300 TV are generated by the PSC10308E power supply module or its analogs using SSC9513 (PWM Resonant), A6079M, R2A20113 (PFC) microcircuits.
MainBoard - the main board (motherboard) is a BAA module using CPU chips: MT5388GFMG 1018-AMSL; EEPROM: 24C128; SOUND: TPA3110D2; and others.
The TEQE8-L01A tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: S-LCD
Model: LTY320AP04
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive