Technical description and composition of the TV SONY KDL-40V4210, type of panel and applicable modules. The composition of the modules.SONY
Model: KDL-40V4210
Chassis / Version: EG1L_L
Panel: LTZ400HA07
T-CON: 400HAC2LV3.0
Inverter (backlight): SSB400W16501 rev0.5
Power Supply (PSU): IP5 1-876-467-21
PWM Power: R2A0112 (PFC), CXD9841P, MIP2H2 (Standby)
MainBoard: 1-877-114-12
IC MainBoard: CPU: UPD61123F1-100-KA3-A, MB90F334APMC-GE1; DRAM: HYB25DC256160CE-6; NAND Flash: NAND128W3A2BN6F; SOUND: TPA3100D2PHPR
Tuner: BTD HF411T
Control: RM-ED013
Technical Specifications KDL-40V4210
SONY KDL-40V4210
General recommendations for repairing TV LCD
Repair SONY KDL-40V4210 must begin with the diagnosis of a malfunction and a thorough inspection of its external and internal components, including those of the body. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. 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.
In the absence of any signs of operability, when the SONY KDL-40V4210 does not turn on and does not signal anything with the control lights on the panel, the IP5 power supply module 1-876467-21 is most likely to be faulty. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the likelihood 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 chip of the PWM controller R2A0112 prk CDX9841P pit MIP242 dezh can also be a cause of breakdown of the power switch of the converter.
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, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
Often, attempts to repair an SSB400W16501 rev0.5 inverter are hampered by the fact that the diagnosis of a malfunction is complicated by the operation of its protection, which is designed to turn off the inverter in emergency conditions - when the lamps are depressurized, breaks or short circuits in high-voltage connections and other emergency situations. Lock protection to localize the defect is popular among repairmen.
In such cases, special care should be taken during diagnostics, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
In cases where there is no tuning to the local television channels, you should make sure that there is varicap supply voltage (30-33V) and other supply voltages at the terminals of the BTD HF411T tuner.
Attention to users! Self-repair of a SONY KDL-40V4210 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual / schematic diagram ---------------> Sony 1-876-467-11, 1-876-467-21 IP5 Power supple
The appearance of MainBoard 1-877-114-12 is shown in the figure below:1-877-114-12
1-877-114-12 can be used on TVs:
SONY KDL-40L4000 K (Panel LTZ400HA07 A03), SONY KDL-40V4210 (Panel LTZ400HA07), SONY KDL-46V4000 (Panel LTY460HB08 002), SONY KDL-40U4000 (Panel LTY400HA11).
The appearance of the power supply
Main features of the device SONY KDL-40V4210:
Installed matrix (LCD-panel) LTZ400HA07.
The matrix control uses the Timing Controller (T-CON) 400HAC2LV3.0.
To power the backlight used inverter SSB400W16501.
The necessary supply voltages for all nodes of the SONY KDL-40V4210 TV are generated by the IP5 power supply module, or its analogs using the R2A0112 (PFC), CXD9841P, MIP2H2 (Standby) microcircuits.
MainBoard - the main board (motherboard) is a module 1-877-114-12, using CPU: UPD61123F1-100-KA3-A, MB90F334APMC-GE1; DRAM: HYB25DC256160CE-6; NAND Flash: NAND128W3A2BN6F; SOUND: TPA3100D2PHPR and others.
The BTD HF411T tuner provides TV reception and channel tuning.
