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-S40A10E

Technical description and composition of the SONY KLV-S40A10E TV, panel type and applicable modules. The composition of the modules.
SONY
Model: KLV-S40A10E
Chassis / Version: WAX
Panel: LTY400W2-L06 S-LCD
T-CON: 400W2C4LV2.5
Inverter (backlight): KLS-400SSB / KLS-400SSA (Master / Slave)
Power Supply (PSU): 1-868-161-13
MainBoard: 1-868-635-11 (172676911) & 1-867-360-15 (172619615) EP-GW & 1-867-366-21 (1-726-200-21)
Technical Specifications KLV-S40A10E
SONY KLV-S40A10E
General recommendations for repairing TV LCD
Possible manifestations of defects
- The SONY KLV-S40A10E TV does not turn on and does not show any signs of turning on at all. There are no reactions to the control buttons or the remote control.
With such manifestations, the power module 1-868-161-13 usually fails. Then it is necessary to measure its secondary (output) voltages and, if they are absent, it is necessary to check the serviceability of power switches and rectifier diodes of the converters for a possible short circuit.
During thermal or avalanche breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key are most often cut off.
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. Or the image may appear for a second when turned 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 turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the motherboard 1-868-635-11 should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software).

It should be remembered! Attempts to self-repair a SONY KLV-S40A10E TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!

Service Manual with Schematic Diagram 106 pages of 2005 for the KLV-S40A10E, KDL-S40A11E, KDL-S40A12U.


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-S40A10E:
Installed matrix (LCD-panel) LTY400W2-L06 S-LCD.
The matrix control uses the Timing Controller (T-CON) 400W2C4LV2.5.
To power the backlight used inverter KLS-400SSB.
The formation of the necessary supply voltages for all nodes of the SONY KLV-S40A10E TV is carried out by the power module 1-868-161-13, or its analogues.
MainBoard - the main board (motherboard) is a module 1-868-635-11.
Information from an alternative source:
SONY KLV-S40A10E Chassis WAX
Panel Type (Matrix): LTY400W2-L06 S-LCD
Motherboard: 1-868-635-11 (172676911), AV: 1-867-360-15 (172619615) EP-GW, Sub board: 1-867-366-21 (1-726-200-21)
T-con: 400W2C4LV2.5
Invertor: Master / Slave KLS-400SSB / KLS-400SSA
PSU: 1-868-161-13 Schematic,
Posted By: FRANK at 02:48
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