Technical description and composition of the TV SONY KLV-32BX301, type of panel and applicable modules. The composition of the modules.SONY
Model: KLV-32BX301
Chassis / Version: AZ1A_5-2
Panel: LTY320AP05 006 // LTY320AP04
T-CON: SSI320_4UG01 REV.1.0
Inverter (backlight): SSI320_4U601 Rev1.0
PWM Inverter: SSI1091ASN (24)
MOSFET Inverter: STV438S (3)
Power Supply (PSU): APS-252
PWM Power: MIP2H2 (7), CXA3809M
MOSFET Power: TK15A50D, TK8A50D
MainBoard: BAA board
IC MainBoard: scaler MT5388GFMG, audio TPA3110D2, flech K9F1208UOC, DC-DC: 95503
Tuner: TEQE8-L01A
Control: Remote: RM-GA019, IR: 1-880-416-11
Appearance
SONY KLV-32BX301
General recommendations for repairing TV LCD
It is advisable to start the repair and diagnostics of the SONY KLV-32BX301 TV with a careful external examination of the internal and external elements, including case parts, a display, buttons and cables. Many visible signs make it possible to determine the future direction of troubleshooting and localization of the defect. 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.
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 chance that the APS-252 power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, but this happens much less often. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, the first thing to do is to check the rectifier bridge diodes and the K15A500 power switch for the possibility of an avalanche or thermal breakdown.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The MIP2H2 PWM controller chip (7) can also cause a breakdown of the power switch of the converter.
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
If the SONY KLV-32BX301 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
In most cases, the diagnosis and repair of the SSI320_4U601 Rev1.0 inverter is difficult due to the organization of protection, which turns it off in emergency cases to avoid fires during short circuits or open circuits in high voltage circuits and during depressurization of lamps. Often, repairmen block the protection circuits in order to make the necessary measurements at the control points of the inverter to identify the causes of the defect.
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.
If the BAA motherboard is faulty, first of all it is necessary to check all the linear power regulators of its chips and, if necessary, update the software. Sometimes you can check the health of MB only by replacement. Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the scaler elements MT5388GFMG audio TPA3110D2 flech K9F1208UOC DC-DC 95503.
If there is no reception of television channels, but the TV works properly from external devices, first of all it is necessary to check the supply voltage of the TEQE8-L01A tuner varicaps, which is usually within 30-33V, as well as other supply voltages on the tuner terminals.
We recommend the owners of the KLV-32BX301 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual / schematic diagram ----------> Sony KLV-22BX300, KLV-26BX300, KLV-32BX300, KLV-40BX400 Chassis AZ1-A
psu / schematic diagram ----------> APS-252, APS-253, APS-254 Power supply
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-32BX301:
Installed matrix (LCD panel) LTY320AP05 006 or LTY320AP04.
The matrix control uses the Timing Controller (T-CON) SSI320_4UG01.
The SSI320_4U601 inverter is used to power the backlight lamps; it is controlled by the SSI1091ASN PWM controller (24). As power elements of the inverter, keys of the STV438S type (3) are used.
The necessary supply voltages for all nodes of the SONY KLV-32BX301 television are generated by the APS-252 power module or its analogs using MIP2H2 (7), CXA3809M microcircuits and power switches of the type TK15A50D, TK8A50D.
MainBoard - the main board (motherboard) is a BAA module, using scaler MT5388GFMG chips, audio TPA3110D2, flech K9F1208UOC, DC-DC: 95503 and others.
The TEQE8-L01A tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: S-LCD
Model: LTY320AP05
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA