Technical description and composition of the LG 26LD350 TV, panel type and modules used. The composition of the modules.Lg
Model: 26LD350
Chassis / Version: LD01B
Panel: T260XW04 V.3
Lamp backlight: 8 Lamp CCFL
Inverter (backlight): VIT71886.00
PWM Inverter: OZ964SN
MOSFET Inverter: P2904BD, P4004ED
Power Supply (PSU): LGP26-10P EAX61464001
PWM Power: HS01G (PFC), L6599D
MOSFET Power: K5A60D, K13A60D
MainBoard: EAX61354204 (0) EBR65979056
IC MainBoard: CPU: LGE107DC-RP, DDR: H5TQ1G63BFR-H9C, Nand: HY27UF082G2B, SPI FLASH MX25L8005M2I
Tuner: TDTJ-S001D
Control: IR: EBR64965302 BM-LDS103
Specifications 26LD350
LG 26LD350
General recommendations for TV LCD repair
Possible manifestations of malfunctions
- LG 26LD350 does not turn on, indicators on the front panel do not light or blink. The TV does not respond to control buttons and the remote control.
In such cases, a malfunction should be looked for in the circuits of the LGP26-10P power supply. Its output voltages should be measured and, if they are absent, check the power switches (K5A60D, K13A60D) and rectifier diodes for the probability of a short circuit in the converters.
In case of any breakdowns of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be circuits supplying a PWM controller, damper or frequency setting circuits, or OOS (negative feedback) elements in the stabilization circuit. PWM controllers (PWM) HS01G (PFC), L6599D, in the absence of external damage and a short circuit between the terminals, are checked by replacing them with a known good one.
- No picture, sound, all other TV functions are working. When turned on, the image may sometimes appear for a second.
These manifestations can be provoked by the power module, or by defects in the inverter, as well as by the skew of currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, you should ring the power switches in its converter for breakdown and the secondary windings of the transformers for an open.
If, when diagnosing a malfunction, it is required to turn off the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are completed, it is imperative to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the EAX61354204 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of complex MB (SSB) repairs and with the necessary skills and equipment, it may sometimes be necessary to replace its chips CPU: LGE107DC-RP, DDR: H5TQ1G63BFR-H9C, Nand: HY27UF082G2B, SPI FLASH MX25L8005M2I and other possible faulty components. Malfunctions associated with the use of BGA soldering technologies are usually easily diagnosed by the warm-up method.
The malfunction of the TDTJ-S001D tuner is established after checking the software and all supply voltages at its outputs. The data exchange of the tuner with the processor via the I2C bus can be monitored with an oscilloscope.
Attention to TV owners! Attempts to repair the LG 26LD350 yourself are not recommended by the manufacturer and can lead to serious negative consequences!
Compatible with: 19LD350-ZA, 19LD355-ZA, 19LE3300-ZA, 19LE3308-ZA, 22LD350-ZA, 22LD355-ZA, 22LD358-ZA, 22LE3300-ZA, 22LE3308-ZA, 22LE3320-ZA, 26LD350-ZA, 26LD355-ZA, 26LE3300-ZA, 26LE3308-ZA, 32LD350-ZA, 32LD351-ZB, 32LD355-ZA, 32LD358-ZA, 32LD420-ZA, 32LD420C-ZA, 32LD428-ZA, 32LD450-ZA, 32LD450N-ZA, 32LD455-ZA, 32LD458-ZA, 32LD465-ZA, 32LD468-ZA, 32LD550-ZC, 32LD551-ZA, 32LD565-ZC, 32LE3300-ZA, 32LE3308-ZA, 32LE4500-ZA, 32LE4508-ZA, 32LE5300-ZA, 32LE5308-ZA, 32LE5310-ZB, 32LE5318-ZB, 37LD420-ZA, 37LD428-ZA, 37LD450-ZA, 37LD455-ZA, 37LD458-ZA, 37LD468-ZA, 37LE4500-ZA, 37LE4508-ZA, 37LE5300-ZA, 37LE5308-ZA, 37LE5310-ZB, 37LE5318-ZB, 42LD420-ZA, 42LD428-ZA, 42LD450-ZA, 42LD455-ZA, 42LD458-ZA, 42LD465-ZA, 42LD468-ZA, 42LD551-ZA, 42LD565-ZC, 42LE4500-ZA, 42LE4508-ZA, 42LE5300-ZA, 42LE5308-ZA, 42LE5310-ZB, 42LE5318-ZB, 46LD551-ZA, 47LD420-ZA, 47LD450-ZA, 47LD455-ZA, 47LD458-ZA, 47LD465-ZA, 47LD468-ZA, 47LE5300-ZA, 47LE5308-ZA, 47LE5310-ZB, 47LE5318-ZB, 52LD551-ZA, 55LE5300-ZA, 55LE5308-ZA, 55LE5310-ZB, 60LD551-ZA, 60LD558-ZC.DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Service Manual with Schematic Diagram 46 pages 2010 on models 26LD350, 26LD350-TA.
Additional MainBoard Repair
The appearance of the MainBoard EAX61354204 is shown in the figure below:
EAX61354204 can be used in TVs:
LG 32LD345 (Panel LC320WXE-SCA1), LG 37LD450 (Panel LC370WUG (SC)(A1)), LG 42LD455-ZA (Panel LC420WUG), LG 32LD550 (Panel LK315D3LA57), LG 42LD450 ZA (Panel LC420WUG (SC)(A1)), LG LG32LD350 32LD350 (Panel T315HW04 V.8), LG 42LD420 ZA (Panel LC420WUG (SC)(A1)), LG 37LD420 ZA (Panel T370HW03 V.B), LG 32LD420 ZA (Panel LC320WUG (SC)(A1)), LG 32LD555 ZC (Panel LC320WUG (SC)(A1)), LG 26LD355-ZA (Panel T260XW04 V.3), LG 37LD425 ZA (Panel T370HW03 V.B), LG 32LD425 (Panel LC320WUG (SC)(A1)), LG 32LD340 32LD340-ZA.BRUWLJU (Panel LC320WXE (SC)(A1)).
External view of the power supply
Main features of the LG 26LD350 device:
Installed matrix (LCD-panel) T260XW04 V.3.
The VIT71886.00 inverter is used to power the backlight lamps, it is controlled by the OZ964SN PWM controller. Keys of type P2904BD, P4004ED are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the LG 26LD350 TV is carried out by the LGP26-10P power module, or its analogues using the HS01G (PFC), L6599D microcircuits and power switches of the K5A60D, K13A60D type.
MainBoard - the main board (motherboard) is an EAX61354204 module, using CPU chips: LGE107DC-RP, DDR: H5TQ1G63BFR-H9C, Nand: HY27UF082G2B, SPI FLASH MX25L8005M2I and others.
Tuner TDTJ-S001D provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T260XW04 V3
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 13%), 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: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
TV LG 26LD350 with LCD T260XW04 V.3, diagonal size 26 "(66 cm) 16: 9. Dynamic contrast ratio of 50,000: 1 is achieved by controlling the operation of the backlight depending on the brightness of the scene.
The T260XW04 sensor and MainBoard software provide high quality HD viewing at 1366x768 pixels in 720p (HD Ready). The input analog video signal is decoded in PAL, SECAM, NTSC systems. The graphic processing of a digital signal is carried out in the 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards. Supported media file formats: MP3, JPEG.
Speaker power of 10 W (2x5 W) is provided by two speakers. The NICAM stereo audio processing system and the Sound Surround function are used.
Communication with other devices via an external interface is supported by standard input and output connectors: antenna input (RF), AV, audio x3, component, SCART, RGB, VGA, HDMI x2, USB, RS-232. A headphone jack is provided. A VGA (D-Sub 15) connector is provided to connect a computer or laptop to this TV model. This interface supports standard resolutions: 640x480, 800x600, 1024x768, 1360x768.
The digital tuner can receive TV channels in DVB-T MPEG4 standards.
The power consumed when operating from the network is 90 W.
Dimensions: With stand 663x484x207 mm, Without stand 663x423x80 mm.
Attention! The T260XW04 panel of the LG 26LD350 LCD TV is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!