Technical description and composition of the TV SONY KDL-40V2000, type of panel and applicable modules. The composition of the modules.SONY
Model: KDL-40V2000
Chassis / Version: WAX2
Panel: LTZ400WS-LH2
T-CON: 400WSC4LV0.4 LRX4222T3, K4D263238F-UC50, 24C64WP, 7585AIL, ISL24006IRZ
Inverter (backlight): A06-126268F, A06-126269F
PWM Inverter: BD9886FV, LM2901, RSS06S
Power Supply (PSU): 1-869-027-12
PWM Power: MIP2H2 (Standby), CXD9841M, FA5501A (PFC)
MOSFET Power: K3797, K3568, D5L60, D10SC6M
MainBoard: 1-869-852-21, FEE: 1-869-656-12, AV: 1-869-850-25
IC MainBoard: MB91305, BD9775FV, 24C256BWP, MSP4410K D6, EM6A9320BI-5MG, S29AL016D70TFI01, CXA2069Q, NY27US08281A, 24C02WP, ADT75A
Tuner: 1-869-657-12 BTD-HF431Z, 8-597-571-00
Technical Specifications KDL-40V2000
SONY KDL-40V2000
General recommendations for repairing TV LCD
SONY KDL-40V2000 TV, like any other, it is advisable to start repairing it by inspecting the internal and external visible physical visual changes. It often happens that some damage to elements or connections will help determine the correct direction of troubleshooting and localization of the defect. Electrolytic capacitors of filters with a swollen case, as well as ring cracks or a layer of coal on burned-out resistors formed in the soldered terminals of the heating elements, sometimes tell the repairman the causes of the malfunction and possible consequences.
Sometimes the SONY KDL-40V2000 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 a failure of the common power module 1-869-027-12. If the mains fuse is broken in the power supply, in most cases a breakdown of the power switch K3797, K3568, D5L60, D10SC6M is detected, which can be integrated with a PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller MIP2H2, CXD9841M, FA5501A, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If the SONY KDL-40V2000 does not have an 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.
In most cases, the diagnosis and repair of the inverter A06-126268F, A06-126269F 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 when the lamps are depressurized. 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.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Repair or diagnostics of the motherboard B 1-869-852-21, FEE: 1-869-656-12, AV: 1-869-850-25 must be started by checking the power stabilizers. If necessary, you should update the software (software). In some cases, to repair the MB board (SSB), it may be necessary to replace the chips - MB91305, BD9775FV, 24C256BWP, MSP4410K D6, EM6A9320BI-5MG, S29AL016D70TFI01, CXA2069Q, NY27US08281A, 24C02WP, ADT75A with new or new ones.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, check the voltage of the tuner varicaps 1-869-657-12 BTD-HF431Z, 8-597-571-00, which is usually in the range 30-33V , as well as other supply voltages at the terminals of the tuner.
We recommend the owners of the KDL-40V2000 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 KDL 32/40/46V2000 chassis WAX2
The appearance of MainBoard 1-869-852-21 is shown in the figure below:1-869-852-21
1-869-852-21 can be used in televisions:
SONY KDL-40V2000 (Panel LTZ400WS-LH2), SONY KDL-46S2030 (Panel LTY460WS-L04), SONY KDL-46V2000 (Panel 46 " 720p HD (1366x720)), SONY KDL-26S2000 (Panel LTY260W2-L16).
PSU Advanced
The KDL-40V2000 model uses a 1-869-027-12 power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, this is a boost converter based on the FA5501A PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes, when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the device SONY KDL-40V2000:
Installed matrix (LCD-panel) LTZ400WS-LH2.
The matrix control uses the Timing Controller (T-CON) 400WSC4LV0.4.
The inverter A06-126268F is used to power the backlight lamps, it is controlled by the BD9886FV, LM2901, RSS06S PWM controller.
The required supply voltages for all nodes of the SONY KDL-40V2000 TV are generated by the power module 1-869-027-12, or its analogs using microchips MIP2H2 (Standby), CXD9841M, FA5501A (PFC) and power switches of the type K3797, K3568, D5L60, D10SC6M.
MainBoard - the main board (motherboard) is a module 1-869-852-21, using microchips MB91305, BD9775FV, 24C256BWP, MSP4410K D6, EM6A9320BI-5MG, S29AL016D70TFI01, CXA2069Q, NY27US08281A, 24C02WP.
The tuner 1-869-657-12 BTD-HF431Z, 8-597-571-00 provides the reception of television programs and tuning to channels.
Information from an alternative source:
SONY KDL-40V2000 chassis WAX2
Panel Type (Matrix): LTZ400WS-LH2,
Motherboard:1-869-852-21, MB91305, BD9775FV, 24C256BWP, EM6A9320BI-5MG, S29AL016D70TFI01, 24C02WP x2, ADT75A, FEE: 1-869-656-12, D61123F1 100, NY27US08281A, D1216AATA-6B-E, TUNER: 1-869-657-12, Tuner: BTD-HF431Z, 8-597-571-00, AV: 1-869-850-25, CXA2069Q, MSP4410K D6, M61571AFP,
T-con: 400WSC4LV0.4, LRX4222T3, K4D263238F-UC50, 24C64WP, 7585AIL, ISL24006IRZ,
Inverter: A06-126268F, A06-126269F, BD9886FV, LM2901, RSS06S x20,
PSU: 1-869-027-12, MIP2H2, CXD9841M, FA5501A, K3797 x2, K3568 x2, D5L60, D10SC6M x6
