Technical description and composition of the TV SONY KLV-32BX300, type of panel and applicable modules. The composition of the modules.SONY
Model: KLV-32BX300
Chassis / Version: AZ1-A
Panel: LTY320AP04
T-CON: 320AP04S4LV1.7 Non-removable LAXC021TOB-01, MAX17122, 24C64WI
Inverter (backlight): SSI320_4UG01 1-857-634-11 LJ9702545A
PWM Inverter: SSI091ASN
MOSFET Inverter: MDD1752
Trans Inverter: CS320S6
Power Supply (PSU): PSC10308E M A-1752-778-A G2LE UNIT G2LSD
PWM Power: SSC9513 (PWM Resonant), A6079M, R2A20113 (PFC)
MOSFET Power: K10A60D, TPC8119,
MainBoard: 1-880-238-21 (173141221) BAA board
IC MainBoard: MT5388GF MG, TPA3110D2, H5PS5162FFR, K9F1208UOC
Tuner: TEQE8-L01A
Control: RM-GA019
Technical Specifications KLV-32BX300
SONY KLV-32BX300
General recommendations for repairing TV LCD
Repair of a SONY KLV-32BX300 TV is advisable to start with an external inspection of all its constituent elements, both internal electronic components and external. Inspection is also subject to body elements, control buttons, screen, connectors and cords. Sometimes, only by some signs can we determine the further direction of the localization of the malfunction. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a hint in the assumptions about the causes and consequences of the malfunction.
If the PSC10308E M A-1752-778-A G2LE UNIT G2LSD power supply module malfunctions, the external manifestations may be different, for example, the SONY KLV-32BX300 does not turn on at all and there is no indication of the indicator lights on the front panel. It is advisable to start the troubleshooting of the power supply module by checking the mains fuse. If it is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the K10A60D converter, which are often found in a breakdown state in such situations.
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 defective PWM SSC9513, A6079M, 20113, TP8119, 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 KLV-32BX300 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.
When repairing the SSI320_4UG01 inverter, it is often necessary to disable the protection for diagnostics, which, for the purpose of fire safety, turns it off in any emergency situation, for example, during a malfunction or uneven wear of the lamps, which makes it difficult to find a defect.
Turning off the protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
The BAA 1-880-238-21 (173141221) motherboard must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the power supply circuits of the microcircuits are working, a software update may be necessary. Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements MT5388GF MG, TPA3110D2, H5PS5162FFR, K9F1208UOC.
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-32BX300 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
The appearance of MainBoard 1-880-238-21 is shown in the figure below:1-880-238-21
1-880-238-21 can be used in televisions:
SONY KLV-26BX300 (Panel T260XW05 V.0 T260XW05 V.0), SONY KLV-26BX300 (Panel V260B3-L05 C1), SONY KLV-32BX300 (Panel LTY320AP04), SONY KLV-32NX400 (Panel LTY320AP5 001).
PSU Advanced
The KLV-32BX300 TV is equipped with a PSC10308E power module using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the R2A20113 PWM controller does not allow the electrolytic capacitor of the input rectifier filter to be connected to the network directly through open diodes, when the reactance (about 15-30 ohms at a frequency of 50 Hz) determines the charge current. As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the device SONY KLV-32BX300:
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 lamps, it is controlled by the SSI091ASN PWM controller. The transformer CS320S6 is installed in the inverter converter. As power elements of the inverter, keys of the MDD1752 type are used.
The necessary supply voltages for all nodes of the SONY KLV-32BX300 TV are generated by the PSC10308E power module or its analogs using SSC9513 (PWM Resonant), A6079M, R2A20113 (PFC) microcircuits and power switches of the type K10A60D, TPC8119 ,.
MainBoard - the main board (motherboard) is a module 1-880-238-21, using microchips MT5388GF MG, TPA3110D2, H5PS5162FFR, K9F1208UOC and others.
The TEQE8-L01A tuner provides TV reception and channel tuning.
Information from an alternative source:
SONY KLV-32BX300 Chassis AZ1-A
Panel Type (Matrix): LTY320AP04
Motherboard: 1-880-238-21 (173141221), MT5388GF MG, K9F1208UOC, H5PS5162FFR, Tuner: TEQE8-L01A
T-con: 320AP04S4LV1.7 Non-removable, LAXC021TOB-01, MAX17122, 24C64WI
Invertor: SSI320_4UG01, SSI091ASN, Tr-r: CS320S6 x2
PSU: 3L314W, 20113, K10A60D, SSC9513, Remote: RM-GA019, Service manual with a set of circuits,
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