Technical description and composition of the SONY KDL-37V5800 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-37V5800
Chassis / Version: EX2L
Panel: T370HW02
Inverter (backlight): VIT71861.50 CEM-1
PWM Inverter: OZ964GN
MOSFET Inverter: P2504BDG
Power Supply (PSU): 3H267W-1 P / N-147416212-00286506
PWM Power: SSC9503 (16), A6079M (Standby)
MainBoard: 1-878-942-31 BA - A-1701-876-A I1742444A
IC MainBoard: MC10144F1 410 (EMA), K9F1208UOC, E1116AEBG-8E-F, 24C32, CX81447R, MB91F313A, CXD9926AT, SAA7115AHL, CXA3785R
Tuner: SUT-HE101T (BA92113)
Appearance
SONY KDL-37V5800
General recommendations for repairing TV LCD
Repair of TVs, as well as other devices, it is advisable to start with an external examination. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the power supply module 3H267W-1 P / N-147416212-00286506 is malfunctioning, the external manifestations may be different, for example, the SONY KDL-37V5800 does not turn on at all and there is no indication of the control lights on the front panel. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the 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 is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If when you turn on the SONY KDL-37V5800 there is no image, or it appears for a second and disappears completely, but there is sound, most likely either the backlight or the power converter (inverter) are malfunctioning. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit. If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required when working, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
On the motherboard I1742444A, A-1701-876A, in case of a malfunction, you should first check the performance of all the stabilizers and power converters of the microcircuits, and also, if necessary, update the software (software). Board repair and chip replacement MC10144F1 410 (EMA) ,. K9F1208UOC, E1116AEBG-8E-F, 24C32, CX81447R, MB91F313A, CXD9926AT, SAA7115AHL, CXA3785R are made with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Before replacing the SUT-HE101T tuner (BA92113), if there is no tuning for the channels, first check the software and the supply voltage at its terminals.
It should be remembered! Attempts to repair the SONY KDL-37V5800 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
Service manual / schematic diagram -------------> Sony CHASSIS EX2L-Coriander KDL-32V5500, KDL-37V5500, KDL-40V5500, KDL-46V5500, KDL-52V5500
The appearance of MainBoard 1-878-942-31 is shown in the figure below:1-878-942-31
1-878-942-31 can be used in TVs:
SONY KDL-37V5800 (Panel T370HW02), SONY KDL-40Z5800 (Panel LTY400HG02).
The appearance of the power supply
Main features of the device SONY KDL-37V5800:
Installed matrix (LCD panel) T370HW02.
To power the backlight, an inverter VIT71861.50 is used, it is controlled by the OZ964GN PWM controller. As power elements of the inverter, keys of the type P2504BDG are used.
The necessary supply voltages for all nodes of the SONY KDL-37V5800 TV are generated by the 3H267W-1 power module or its analogs using SSC9503 (16), A6079M (Standby) microcircuits.
MainBoard - the main board (motherboard) is a module 1-878-942-31, using microchips MC10144F1 410 (EMA), K9F1208UOC, E1116AEBG-8E-F, 24C32, CX81447R, MB91F313A, CXD9926AT, SAA7115A37L, CXX9926AT, other.
Tuner SUT-HE101T (BA92113) provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T370HW02 VD
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 819.36x460.89 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 2500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 5.5 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 10-bit), 51 pins
Voltage: 12.0V