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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Wednesday 11 March 2020

REPAIR / SERVICING TV SONY KLV-V32A10E

Technical description and composition of the TV SONY KLV-V32A10E, type of panel and applicable modules. The composition of the modules.
SONY
Model: KLV-V32A10E
Chassis / Version: AT2X
Panel: LTY320W2-L02
T-CON: 320W2C4LV3.4
Inverter (backlight): PCB2638-1, PCB2638-2 A06-126001A
Power Supply (PSU): 1-865-240-31
PWM Power: FA5501AN (PFC), CXD9841M,, STR-A6169 (Standby)
MainBoard: 1-867-499-12 A2 board
IC MainBoard: MSP4411K-QA-D5-001, CXA20690, CXA2163AQ-T6, TPA3004D2PHPR, SVPEX-SREVB, K4D262338G
Control: IR: 1-867-508-11 (172624811)
Technical Specifications KLV-V32A10E
SONY KLV-V32A10E
General recommendations for repairing TV LCD
Possible malfunctions
- The SONY KLV-V32A10E TV does not turn on at all. There is no reaction to the remote control and control buttons from the front panel. Indicator lights do not light or flash.
Often in such cases, the power module 1-865-240-31 is faulty. Then it is necessary to measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches and rectifier diodes of the converters for a possible short circuit.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback circuits (OOS) of stabilization. PWM controllers (PWM), if they do not have visible damage to the chassis and open short circuit between the terminals, are usually checked by replacement.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn it on and immediately disappears
These manifestations can be triggered by a power module, or by defects in the inverter, as well as a distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are in good working condition, then you need to check the converter keys and the secondary windings of the transformers.
If in diagnosing a malfunction, it is necessary to disable 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 their completion it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the A2E 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). Board repair and chip replacement MSP4411K-QA-D5-001, CXA20690, CXA2163AQ-T6, TPA3004D2PHPR, SVPEX-SREVB, K4D262338G are made with the necessary equipment, and the corresponding element base. Faults associated with the application of BGA processor soldering technologies can be localized by the heating method.
Attention TV owners! Self-repair attempts by SONY KLV-V32A10E are not recommended by the manufacturer and can lead to serious negative consequences!

 Service Manual 115 pages for the model KLV-V26A10E, KLV-V32A10E, KDL-V26A12U, KDL-V32A12U.

  Service manual / schematic diagram --------------->   Sony KLV-S23A10E, KLV-S26A10E, KLV-S32A10E, KDL-S23A12U, KDL-S26A12U, KDL-S32A12U - WAX CHASSIS


 The appearance of MainBoard 1-867-499-12 is shown in the figure below:
1-867-499-12
The appearance of the power supply
Main features of the device SONY KLV-V32A10E:
Installed matrix (LCD panel) LTY320W2-L02.
The matrix control uses the Timing Controller (T-CON) 320W2C4LV3.4.
To power the backlight used inverter PCB2638-1.
The formation of the necessary supply voltages for all nodes of the SONY KLV-V32A10E TV is carried out by the power module 1-865-240-31, or its analogs using chips FA5501AN (PFC), CXD9841M,, STR-A6169 (Standby).
MainBoard - the main board (motherboard) is a module 1-867-499-12, using microchips MSP4411K-QA-D5-001, CXA20690, CXA2163AQ-T6, TPA3004D2PHPR, SVPEX-SREVB, K4D262338G and others.
Additional technical information about the panel:
Brand: S-LCD
Model: LTY320W2-L02
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Posted By: FRANK at 02:58
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