Technical description and composition of the SONY KLV-22S570A TV, panel type and applicable modules. The composition of the modules.SONY
Model: KLV-22S570A
Chassis / Version: EX2T
Panel: T216XW01
Inverter (backlight): GT2 PS6202
Trans Inverter: A979 Y9132
Power Supply (PSU): GT2 PS6202
PWM Power: MR4030, LX1692, ZI5933, SP8M5 4pcs, TPC8109
MainBoard: BT22T board A1724859A
IC MainBoard: TDA15420E / N1C00, MB90F334APMCGE1, CXB1444R-T6
Tuner: TEQE3-L02A
Control: RM-GA016W 148731621
Technical Specifications KLV-22S570A
SONY KLV-22S570A
General recommendations for repairing TV LCD
Repair SONY KLV-22S570A must begin with the diagnosis of the malfunction and a thorough inspection of its external and internal components, including those of the body. Sometimes, only by some signs can we determine the further direction of the localization of the malfunction. Elements with visible damage, for example, capacitors swelled up after boiling the electrolyte, charred resistors in certain nodes of the circuit, as well as ring cracks in solders will help the master to guess the causes and possible consequences of the malfunction.
If the SONY KLV-22S570A does not turn on, no control lights on the front panel light up or blink, therefore, there is a very high probability of a malfunction of the GT2 PS6202 power module. When diagnosing and repairing the power supply, first of all, it is necessary to check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes or power key.
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.
In cases using a power module with an active KKM, troubleshooting is sometimes somewhat more complicated.
If when you turn on the SONY KLV-22S570A 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.
In most cases, the diagnosis and repair of the GT2 PS6202 inverter is difficult due to the organization of protection, which turns it off in emergency cases to avoid fires during short circuits or breaks in high-voltage circuits and during depressurization of lamps. 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.
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.
If the BT22T motherboard is faulty, first of all it is necessary to check all the linear power regulators of its chips and, if necessary, update the software. Sometimes you can check the health of MB only by replacement. In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - TDA15420E / N1C00, MB90F334APMCGE1, CXB1444R-T6 which may require replacement with new ones.
In cases where there is no tuning to the local television channels, you should make sure that there is a varicap supply voltage (30-33V) and other supply voltages at the terminals of the TEQE3-L02A tuner.
We recommend the owners of the KLV-22S570A TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
The appearance of the MainBoard BT22T is shown in the figure below:BT22T
BT22T can be used in TVs:
SONY KLV-22S570A (Panel T216XW01), SONY KLV-26S550A (Panel T260XW02 V.Q), SONY KLV-37S550A (Panel T370XW02 v.c).
Main features of the device SONY KLV-22S570A:
Installed matrix (LCD-panel) T216XW01.
To power the backlight used inverter GT2. A transformer A979 Y9132 is installed in the inverter converter.
The necessary supply voltages for all nodes of the SONY KLV-22S570A TV are generated by the GT2 power module or its analogs using microcircuits MR4030, LX1692, ZI5933, 4pcs SP8M5, TPC8109.
MainBoard - the main board (motherboard) is a BT22T module, using TDA15420E / N1C00 chips, MB90F334APMCGE1, CXB1444R-T6 and others.
The TEQE3-L02A tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T216XW01 V3
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.6 inch
Resolution: 1366x768, WXGA
Display Mode: VA, Normally Black, Transmissive
Active Area: 477.417x268.416 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 2500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (Tr + Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Brand: SONY, Model: KLV-22S570A.
Shortly from the TV: LCD, 22 ", 1366x768, 720p HD, there is PIP, sound: 10W, HDMI connectors: 2.
SONY KLV-22S570A TV with LCD, diagonal size 22 "(55 cm), 16: 9 aspect ratio.
The panel and software of the board allow viewing images in HD quality at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input analog video signal can be processed in PAL, SECAM, NTSC systems. Graphic processing and image formation of a digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the sound speaker system 10 W (2x5 W) is provided by two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, audio x4, component, VGA, HDMI x2. An output for connecting headphones is provided. To connect an analog computer or laptop to this TV model, a VGA (D-Sub 15) connector is used, which supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV in the operating mode from the network is 51 watts.
Overall dimensions: with stand 577x385x135 mm, without stand 577x389x95 mm.
TV Weight: with stand: 7.4 kg, without stand: 6.7 kg.
Attention! The panel of the LCD TV SONY KLV-22S570A is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!