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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Monday 9 March 2020

REPAIR / SERVICING TV SONY KDL-46HX853

Technical description and composition of the TV SONY KDL-46HX853, type of panel and applicable modules. The composition of the modules.
SONY LED
Model: KDL-46HX853
Chassis / Version: AZ3F
Panel: FQLR460LT01 A-1853-359-B
LED backlight: SJ-010A-R SJ-010A-L
T-CON: 1P-111CX00-4010
LED driver (backlight): ST4046RD-S01 REV.1.0
PWM LED driver: AN37011B
Power Supply (PSU): APS-324 (CH) 1-886-217-11
PWM Power: CXD9969AP, MIP2H2
MainBoard: 1-885-388-51 (173308951)
IC MainBoard: CXD4727GB, K4B2G1646C-HCH9, KFM4G16Q4B, SIL9287BCNU, GL850G, D2826ER, TPA6138, PS54425
Tuner: Tuner
Technical Specifications KDL-46HX853
SONY KDL-46HX853
General repair guidelines for TV LCD LED
Possible malfunctions
- The SONY KDL-46HX853 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
Most often, with such manifestations, the main power module APS-324 is found to be faulty. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
In case of breakdowns of semiconductors in secondary circuits, the converter can usually operate abnormally in short circuit mode, and during short circuit in the power elements of the primary circuit, the main fuse often 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) CXD9969AP, MIP2H2, if they do not have visible damage to the case and open fault between the terminals, are usually 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.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The TV does not turn on, the indicator indicates standby or operating mode, or blinks.
Repair or diagnostics of the 1-885-388-51 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). If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - CXD4727GB, K4B2G1646C-HCH9, KFM4G16Q4B, SIL9287BCNU, GL850G, D2826ER, TPA6138, PS54425. Defective components should be replaced.
If a Tuner tuner is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary supply voltage levels and data exchange pulses with the processor via the I2C bus on the corresponding tuner pins.
Attention! For users and owners of KDL-46HX853 TVs who do not have the appropriate qualifications, knowledge and experience, we categorically do not recommend attempting self-repair in order to avoid negative consequences that could lead to complete non-serviceability of the device.
Service Manual -------------->  153 pages of 2012 FOR the KDL-40HX850, KDL-40HX853, KDL-40HX855, KDL-46HX850, KDL-46HX853, KDL-46HX855, KDL-55HX850, KDL-55HX853.

 Service manual -------------------->  Sony KDL40/40/55HX850/853/855 Chassis AZ3F


 The appearance of MainBoard 1-885-388-51 is shown in the figure below:
1-885-388-51
1-885-388-51 can be used in TVs:
SONY KDL-46HX853 (Panel FQLR460LT01 A-1853-359-B), SONY KDL-40EX653 (Panel LTY400HM10), SONY KDL-40HX853 (Panel FQLR400LT01), SONY KDL-55HX753 (Panel LTY550HQ04), SONY KDL-46HX753 (Panel LTY460HQ05).
The appearance of the power supply
Main features of the device SONY KDL-46HX853:
Installed matrix (LED-panel) FQLR460LT01 A-1853-359-B.
The matrix control uses the Timing Controller (T-CON) 1P-111CX00-4010.
The LED driver ST4046RD-S01 is used to power the backlight LEDs, it is controlled by the AN37011B PWM controller.
The necessary supply voltages for all nodes of the SONY KDL-46HX853 TV are generated by the APS-324 power module or its analogs using CXD9969AP, MIP2H2 microcircuits.
MainBoard - the main board (motherboard) is a module 1-885-388-51, using microcircuits CXD4727GB, K4B2G1646C-HCH9, KFM4G16Q4B, SIL9287BCNU, GL850G, D2826ER, TPA6138, PS54425 and others.
The Tuner provides TV reception and channel tuning.
Posted By: FRANK at 07:46
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