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-S32A10E

Technical description and composition of the SONY KLV-S32A10E TV, panel type and applicable modules. The composition of the modules.
SONY
Model: KLV-S32A10E
Chassis / Version: WAX
Panel: LTY320W2-L02
Inverter (backlight): PCB2638-1 A06-126001A
PWM Inverter: BD9886FV
Power Supply (PSU): 1-865-240-31 (CXD9841M)
PWM Power: FA5501AN (PFC), CXD9841M, STR-A6169 (Standby)
MOSFET Power: 2SK3568, FSF05A60 (PFC)
MainBoard: 1-868-635-11 & 1-867-360-15
IC MainBoard: CPU: SDA5550M-QB-T, EEPROM-M24C32-WMN6T (B)
Technical Specifications KLV-S32A10E
SONY KLV-S32A10E
General recommendations for repairing TV LCD
Possible malfunctions
- SONY KLV-S32A10E does not turn on, the indicators on the front panel do not light up and do not blink. The TV does not respond to the control buttons and the remote control.
Typically, with such manifestations, the defect is caused by faulty elements in the main power module 1-865-240-31. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (2SK3568, FSF05A60 (PFC)) and rectifier diodes in the converters for a short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM) FA5501AN (PFC), CXD9841M, STR-A6169 (Standby), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
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. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, it is necessary to ring in its converter the power switches for breakdown and the secondary windings of the transformers for an open.
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 indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 1-868-635-11 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software). When repairing an MB board, you need to check its CPU components: SDA5550M-QB-T, EEPROM-M24C32-WMN6T (B). 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.
We recommend the owners of the KLV-S32A10E TV for repair only to qualified specialists with the necessary work experience! Self-repair attempts without the appropriate knowledge and skills can lead to irreversible negative consequences!

Service Manual 117 pages of 2005 for  the KLV-S23A10E, KLV-S26A10E, KLV-S32A10E, KDL-S23A12U, KDL-S26A12U, KDL-S32A12U.


The appearance of MainBoard 1-868-635-11 is shown in the figure below:
1-868-635-11
The appearance of the power supply
Main features of the device SONY KLV-S32A10E:
Installed matrix (LCD panel) LTY320W2-L02.
To power the backlight, an inverter PCB2638-1 is used, it is controlled by the BD9886FV PWM controller.
The necessary supply voltages for all nodes of the SONY KLV-S32A10E TV are generated by the power module 1-865-240-31, or its analogs using the FA5501AN (PFC), CXD9841M, STR-A6169 (Standby) microcircuits and power switches of the type 2SK3568, FSF05A60 ( PFC).
MainBoard - the main board (motherboard) is a module 1-868-635-11, using CPU chips: SDA5550M-QB-T, EEPROM-M24C32-WMN6T (B) 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 02:45
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