Technical description and composition of the ERISSON 22LM03 TV, type of panel and applicable modules. The composition of the modules.ERISSON
Model: 22LM03
Panel: MT220WW01 V.6
T-CON: T-CON: MT220WW01V6 C1-A
Inverter (backlight): LK-IN220201A
PWM Inverter: OB3302CP
MOSFET Inverter: ME4946
Power Supply (PSU): PC40005 ---- 1CG
PWM Power: FAN7602
MOSFET Power: FQPF5N60C
MainBoard: PA-0188-2 - 11G
IC MainBoard: MST9E19A-LF, A6MDBN2999H, 0816F, 25X40VNIG, 24C32AN, 24C02, TDA9886TS, TDA1517P
Tuner: MF-4BAWL10345
Specifications 22LM03
ERISSON 22LM03
General recommendations for repairing TV LCD
An external examination of the external and internal elements should be carried out in a timely manner before the start of operations for their dismantling. In some cases, visible external damage to the elements can suggest the direction of troubleshooting and localization of the defect even before the start of the necessary measurements at the control points of the nodes of electronic circuits. Experienced repairmen are well aware of how ring cracks in soldered terminals look, swollen capacitors, and other causes of problems in electronic devices.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when turned on, there is a certain chance that the PC40005 ---- 1CG power supply module is faulty and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of standby power. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the rectifier bridge of the mains voltage and the power key (s) of the FQPF5N60C converter. The complete inoperability of the power supply unit can be caused by a short circuit of the power elements in the primary circuit, followed by an open fuse, or a short circuit in the loads.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM FAN7502 chip from the manufacturer.
Sometimes the ERISSON 22LM03 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including in the power supply unit (power supply unit). It should be remembered that when protection is disabled in order to diagnose a malfunction, there is always a risk of failure of the power elements of the inverter. After repair, it is necessary to restore all standard converter protection circuits.
Repair or diagnostics of the PA-0188-2 - 11G motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, you should update the software (software). Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - MST9E19A-LF, A6MDBN2999H, 0816F, 25X40VNIG, 24C32AN, 24C02, TDA9886TS, TDA1517P and replace failed chips with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board technologies. Typically, such defects are detected by local heating of the chip.
Before changing the MF-4BAWL10345 tuner, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding tuner pins and checked for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
For owners of the 22LM03 TV, we recommend that you contact qualified professionals with experience to repair! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Main features of the ERISSON 22LM03 device:
Installed matrix (LCD panel) MT220WW01 V.6.
The matrix control uses the Timing Controller (T-CON) T-CON :.
To power the backlight, an inverter LK-IN220201A is used, it is controlled by the PWM controller OB3302CP. As power elements of the inverter, keys of the type ME4946 are used.
The necessary supply voltages for all nodes of the TV ERISSON 22LM03 are formed by the power supply module PC40005 ---- 1CG, or its analogs using microchips FAN7602 and power switches type FQPF5N60C.
MainBoard - the main board (motherboard) is a PA-0188-2 module, using microcircuits MST9E19A-LF, A6MDBN2999H, 0816F, 25X40VNIG, 24C32AN, 24C02, TDA9886TS, TDA1517P and others.
The MF-4BAWL10345 tuner provides television reception and channel tuning.
Information from an alternative source:
ERISSON 22LM03
Panel Type (Matrix): MT220WW01 V.6
Motherboard: PA-0188-2-11G, MST9E19A-LF A6MDBN2999H 0816F, 25X40VNIG, 24C32AN, 24C02, TDA9886TS, TDA1517P, Tuner: MF-4BAWL10345
T-con: MT220WW01V6 C1-A (non-removable), INVERTER: LK-IN220201A, OB3302CP, ME4946
PSU: PC40005 ---- 1CG, FAN7502, FQPF5N60C
Additional technical information about the panel:
Brand: INNOLUX
Model: MT220WW01 V.6
Type: a-Si TFT-LCD, Panel
Diagonal size: 22.0 inch
Resolution: 1680x1050, WSXGA +
Display Mode: TN, Normally White, Transmissive
Active Area: 473.76x296.1 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC)
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 2 pcs CCFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V