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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Saturday 7 March 2020

REPAIR / SERVICING TV SONY KDL-40P5600

Technical description and composition of the SONY KDL-40P5600 TV, panel type and applicable modules. The composition of the modules.
SONY
Model: KDL-40P5600
Panel: LTY400HA12
T-CON: NP_HAC2LV1.1
Inverter (backlight): integrated into PSU + SSB400W12S01
MOSFET Inverter: 2903
Power Supply (PSU): 1-879-646-11 A1708948A
PWM Power: CXD9969P, MIP2H2, LX1692FIDW
MOSFET Power: K8A60D, K10A60D
MainBoard: 1-878-999-11 Y2008590A
IC MainBoard: PNX85433EH / M2 / 2008C, NAND512W3A2CN6F, EDE5116AJBG, M25P10, M24C64TDA9995HL, M24C64, TDA10048HN
Tuner: ENG37E10KF
Technical Specifications KDL-40P5600
SONY KDL-40P5600
General recommendations for repairing TV LCD
Possible malfunctions
- The SONY KDL-40P5600 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light up and do not blink, the TV does not respond to the control buttons.
In such cases, the malfunction should be sought first in the power module 1-879-646-11. 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 (K8A60D, K10A60D) and rectifier diodes of converters 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. PWM microcircuits (PWM) CXD9969P, MIP2H2, LX1692FIDW are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and all the other functions of the TV work. The image sometimes for a second appears immediately after turning on and disappears.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply to the inverter, you must ring in its converter power keys for breakdown and secondary windings of 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 when working, and after they are finished, 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 1-878-999-11 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). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements PNX85433EH / M2 / 2008C, NAND512W3A2CN6F, EDE5116AJBG, M25P10, M24C64TDA9995HL, M24C64, TDA10048HN. BGA chip malfunctions are usually easy to detect by warming up.
If the TV works normally from external devices, but does not tune into television channels, the ENG37E10KF tuner may be malfunctioning. In such cases, first of all, you should make sure that there are supply voltages at its corresponding conclusions. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus. Sometimes the cause of the inoperability of the tuner may be a software failure.
Attention TV owners! Self-repair attempts by SONY KDL-40P5600 are not recommended by the manufacturer and can lead to serious negative consequences!




The appearance of MainBoard 1-878-999-11 is shown in the figure below:
1-878-999-11
1-878-999-11 can be used in TVs:
SONY KDL-32S5600 (Panel LTY320HA03 A02), SONY KDL-37P5600 (Panel T370HW02 V.B.), SONY KDL-40S5600 (Panel LTY400HA12 A02).
The appearance of the power supply
Main features of the device SONY KDL-40P5600:
Installed matrix (LCD-panel) LTY400HA12.
The matrix control uses the Timing Controller (T-CON) NP_HAC2LV1.1.
To power the backlight, a converter is used, combined with a power supply. As power elements of the inverter, keys of type 2903 are used.
The necessary supply voltages for all nodes of the SONY KDL-40P5600 TV are generated by the power module 1-879-646-11, or its analogs using CXD9969P, MIP2H2, LX1692FIDW microchips and power switches of the type K8A60D, K10A60D.
MainBoard - the main board (motherboard) is a module 1-878-999-11, using chips PNX85433EH / M2 / 2008C, NAND512W3A2CN6F, EDE5116AJBG, M25P10, M24C64TDA9995HL, M24C64, TDA10048HN and others.
The ENG37E10KF tuner provides TV reception and channel tuning.
Posted By: FRANK at 02:35
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