Technical description and composition of the SONY KDL-37P3000 TV, panel type and applicable modules. The composition of the modules.SONY
Model: KDL-37P3000
Chassis / Version: SE2
Panel: T370XW02
T-CON: T370XW02V5CB 06A69_1A
Inverter (backlight): 4H V1448.481 / C1 DARFON
PWM Inverter: OZ964SN (20), 324 (14)
MOSFET Inverter: P2804ND5G (5)
Trans Inverter: 6025B749A16 GP-03 6026B47BB14 GP-03
Power Supply (PSU): 1-874-219-14 GS3
PWM Power: MCZ3001DB, MIP2H2, FA5501AN (PFC)
MainBoard: 1-874-223-11 = 1-874-223-12
IC MainBoard: CXD9922R, 24C32WL, TDA9973AHL / 8/12
Tuner: BTP-HC401 (10)
Technical Specifications KDL-37P3000
SONY KDL-37P3000
General recommendations for repairing TV LCD
Repair of electronic equipment usually begins with an external inspection of the device and diagnosis of the malfunction. In this case, you should visually carefully examine all the elements of the SONY KDL-37P3000 TV, both internal and external. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. 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.
Faults in the GS3 1 874 219 14 power supply module can be expressed in different ways, for example, the SONY KDL-37P3000 does not turn on at all and the control lights on its front panel do not light up and do not blink, and there are no signs of operability. If the mains fuse is broken in the power supply, in most cases a breakdown of the power switch 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.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a PWM controller in a single chip, are reliable enough and rarely fail for no reason. The reasons for the breakdown of the key should be sought by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
In cases where the SONY KDL-37P3000 TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of an inverter (converter for powering the backlight) malfunction. When you turn on the TV, the image may appear briefly and immediately disappear. It must be borne in mind that with such manifestations, the lamps themselves also fail, the malfunction of which can be detected by replacement, by connecting to the connectors for diagnostics that are known to be serviceable and suitable in power.
Repair of the 4H V1448.481 / C1 DARFON inverter is difficult because in case of any malfunction or abnormal situation, even if the lamps are unevenly worn, protection is triggered, which turns it off for fire safety purposes. Diagnostics become impossible and protection needs to be disabled.
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.
Repair or diagnostics of the 1-874-223-12 motherboard 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 - CXD9922R, 24C32WL, TDA9973AHL / 8/12 with new or obviously working ones.
Attention to users! Self-repair of a SONY KDL-37P3000 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
Service manual / schematic diagram -------------> Sony KDL-26/32/37/40P3000, KDL-26/32/37/40P300H chassis SE2
psu / schematic diagram -------------> Sony 1-874-219-13, 1-874-219-14 GS3
The appearance of MainBoard 1-874-223-11 is shown in the figure below:1-874-223-11
1-874-223-11 can be used in TVs:
SONY KDL-32P3000 (Panel LTA320WT-L06), SONY KDL-32U3000 (Panel LTA320WT-L06), SONY KDL-37P3000 (Panel T370XW02), SONY KDL-40P3000 (Panel T400XW01 V0), SONY KDL-26S3000 (Panel V260B1-L07 Rev.C3 ), SONY KDL-32P3020 (Panel LTA320WT-L06), SONY KDL-40U3000 (Panel T400XW01 V0).
The appearance of the power supply
Main features of the device SONY KDL-37P3000:
Installed matrix (LCD panel) T370XW02.
The matrix control uses the Timing Controller (T-CON) T370XW02V5CB.
To power the backlight, a 4H inverter is used, it is controlled by the PWM controller OZ964SN (20), 324 (14). A transformer 6025B749A16 GP-03 6026B47BB14 GP-03 is installed in the inverter converter. As power elements of the inverter, keys of the type P2804ND5G (5) are used.
The necessary supply voltages for all nodes of the SONY KDL-37P3000 TV are generated by the power module 1-874-219-14, or its analogs using microchips MCZ3001DB, MIP2H2, FA5501AN (PFC).
MainBoard - the main board (motherboard) is a module 1-874-223-11, using microchips CXD9922R, 24C32WL, TDA9973AHL / 8/12 and others.
Tuner BTP-HC401 (10) provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T370XW02 VC02
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 819.6x460.8 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V