REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Sunday 16 February 2020

REPAIR / SERVICING TV LG 32LE3300

Technical description and composition of the LG 32LE3300 TV, panel type and applicable modules. The composition of the modules.
LG LED
Model: 32LE3300 32LE3300-ZA.BRUWLJU
Chassis / Version: LD01D
Panel: LC320EXN (SC) (A1)
LED backlight: 3660L-0356A, 32 V5 Edge HD-1 REV11.0 2L-Type, 32 V5 Edge HD-1 REV11.0 2R-Type
T-CON: 6870S-1091A
LED driver (backlight): KLS-E320N1F-06 6917L-0038A
Power Supply (PSU): LGP3237-10Y EAY61770201
PWM Power: VIPER27L (Standby), SG6961 (PFC), L6599
MOSFET Power: 04N60C3, 13NM60N (PFC)
MainBoard: EAX61766102 (0) EBR70979513
IC MainBoard: CPU: LGE101DB-LF-T8, SDRAM: K4B1G1646E-HCH9, SPI Flash: W25Q80, EEPROM: 24C1024
Tuner: TDTJ-S001D
Specifications 32LE3300
LG 32LE3300
General repair guidelines for TV LCD LED
Possible malfunctions
- The LG 32LE3300 TV does not turn on, does not respond to the remote control and buttons on the control panel, does not light up or blink indicators.
In such cases, the LGP3237-10Y power supply is usually faulty. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches (04N60C3, 13NM60N (PFC)) and rectifier diodes for possible short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power 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, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. Chips PWM (PWM) VIPER27L (Standby), SG6961 (PFC), L6599 are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
In such cases, the most likely malfunction of the LED backlight elements. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To detect a break in the LED lines without disassembling the panel, a current source is required. It is impossible to open transitions connected in series with a simple multimeter; voltage of several tens of volts is necessary.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the EAX61766102 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). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard - CPU: LGE101DB-LF-T8, SDRAM: K4B1G1646E-HCH9, SPI Flash: W25Q80, EEPROM: 24C1024. In cases where the BGA processor is used, its malfunction is usually detected by local heating.
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages on the terminals of the TDTJ-S001D tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Entrust repair to professionals with sufficient experience in the field of repair of electronic equipment.
Service manual and schematic diagram ------------------------------>  LG 32LE3300 Chassis LD01D.

32LE5300, 32LE5308 , 32LE5300-ZA, 32LE5308-ZA, 32LE530N, 32LE531C, 32LE530N-ZA, 32LE531C-ZA, 32LE5310, 32LE5318, 32LE5310-ZB, 32LE5318-ZB, 32LE5450, 32LE5450-ZA




 The appearance of the MainBoard EAX61766102 is shown in the figure below:
EAX61766102
EAX61766102 can be used in TVs:
LG 42LE4500 ZA (Panel LC420EUG), LG 42LE4508 ZA (Panel T420HW07 V.5), LG 37LE5300 (Panel LC370EUH (SC)(A1)), LG 32LE4500 ZA (Panel T315HW05 V.3), LG 32LE5300 ZA (Panel T315HW05 V.1), LG 32LE3300 32LE3300-ZA.BRUWLJU (Panel LC320EXN (SC)(A1)), LG 37LE4500 37LE4500-ZA (Panel T370HW04 V.4 ), LG 32LE5450 -ZA (Panel LC320EUH (SC)(A1)).
The appearance of the power supply
Main features of the device LG 32LE3300:
Installed matrix (LED-panel) LC320EXN (SC) (A1).
The matrix control uses the Timing Controller (T-CON) 6870S-1091A.
The LED driver KLS-E320N1F-06 is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the LG 32LE3300 TV are generated by the LGP3237-10Y power supply module or its analogs using VIPER27L (Standby), SG6961 (PFC), L6599 microcircuits and power switches type 04N60C3, 13NM60N (PFC).
MainBoard - the main board (motherboard) is an EAX61766102 module using CPU chips: LGE101DB-LF-T8, SDRAM: K4B1G1646E-HCH9, SPI Flash: W25Q80, EEPROM: 24C1024 and others.
The TDTJ-S001D tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG Display
Model: LC320EXN-SCA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 400 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 9 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
Posted By: FRANK at 06:51
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