Technical description and composition of the ERISSON 26LM07 TV, type of panel and applicable modules. The composition of the modules.ERISSON
Model: 26LM07
Chassis / Version: PA-0182-2-XXG
Panel: V260B1-L03 Rev. C2
MainBoard: PA-0182-2-XXG
IC MainBoard: CPU: MST9E19A-L; SPI Flash: 25X40; EEPROM: 24C32;
Tuner: TDQ-6F6 / T126D
Specifications 26LM07
ERISSON 26LM07
General recommendations for repairing TV LCD
Possible manifestations of defects
- The ERISSON 26LM07 TV does not turn on, and does not show any signs of turning on. There is no reaction to the control buttons and the remote control.
Failure in such cases should be sought in the power supply circuits. It is necessary to measure the secondary output voltage, and in case of their absence, check the serviceability of the power switches of the converters and rectifier diodes for a short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, power supply, frequency-setting, damper ... as well as elements of the Negative Stabilization Feedback. The PWM chip can also cause a malfunction of the power switch of the converter and is checked by replacement.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the PA-0182-2-XXG motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). When repairing an MB board, you must check its CPU components: MST9E19A-L; SPI Flash: 25X40; EEPROM: 24C32; . Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
Before changing the tuner TDQ-6F6 / T126D, if it is not possible to tune to television channels, make sure that there are supply voltages that need to be measured on the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Owners and users of the ERISSON 26LM07 TV should remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
FIRMWARE FOR SPI FLASH -----------> ERISSON 26LM07 , Main: PA-0182-2-XXG, Panel: V260B1-L03 Rev.C2
The appearance of MainBoard PA-0182-2-XXG is shown in the figure below:PA-0182-2-XXG
Main features of the ERISSON 26LM07 device:
Installed matrix (LCD panel) V260B1-L03 Rev. C2.
The required supply voltage for all nodes of the TV ERISSON 26LM07 provides a switching power supply.
MainBoard - the main board (motherboard) is a PA-0182-2-XXG module using CPU chips: MST9E19A-L; SPI Flash: 25X40; EEPROM: 24C32; and others.
The TDQ-6F6 / T126D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V260B1-L03
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.2M (6-bit + FRC), CIE1931 72%
Response Time: 3/5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V