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, 18 January 2020

REPAIR / SERVICING TV SAMSUNG UE48H6230AK

Technical description and composition of the SAMSUNG UE48H6230AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE48H6230AK UE48H6230
Chassis / Version: TS01
Panel: CY-GH048CSLV1V
LED backlight: D4GE-480DCA-R3, D4GE-480DCB-R3
T-CON: LSF480HJ01, BN41-02110A
LED driver (backlight): integrated into PSU
PWM LED driver: 7014X
Power Supply (PSU): BN44-00709A L48XIT_ESM
PWM Power: S3051 (PFC), FA6A01N (FA5760N)
MainBoard: BN41-02156A BN94-07307Y
IC MainBoard: CPU: SEMS31; SPI Flash: 25Q40CL; EEPROM: S24C512; SOUND: NTP7414
Tuner: BN40-00288B GT2CX-33X264S / FW-FWS
Control: WIFI: WIDT30Q BN59-01174D
Technical Specifications UE48H6230
SAMSUNG UE48H6230AK
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE48H6230AK TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
With such manifestations, a malfunction can be detected in the BN44-00709A power supply module. It is necessary to measure its output voltages and, in case of their complete or partial absence, check for short-circuit probability in the converters power switches and rectifier diodes.
In case of breakdowns in the secondary circuits, the converter can emergencyly operate in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet power switches, used in switching power supplies, sometimes fail due to a malfunction of any other elements that can put it out of operation in key mode or create an excess of the maximum permissible parameters of the switch. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit. PWM controllers S3051 (PFC), FA6A01N (FA5760N), in the absence of visible damage or explicit short-circuit between the terminals, are checked by replacing with new, or obviously working.
- There is no image, there is sound, there is a reaction to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
The most likely in these cases is a malfunction of the LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
To check the LED strips, to open all the transitions of the LEDs, several tens of volts or more are needed, it is best to use a current source for such purposes. The breakage of several PN junctions connected in series cannot be detected with a multimeter or tester. In such cases, it is necessary to open the panel and check each LED. If your multimeter cannot open the LED transitions in forward bias, you can sometimes detect the presence of a PN junction of the protective zener diode by connecting the probes in the opposite direction. If the zener diode is broken or broken in short-circuit, then the LED is faulty and needs to be replaced.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, it does not respond to the remote control.
Repair or diagnostics of the BN41-02156A 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).
If a tuner BN40-00288B GT2CX-33X264S / FW-FWS is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the required voltage levels and the data exchange pulses with the processor via the I2C bus on the corresponding tuner pins.
TV users and owners need to remember that attempts to self-repair a SAMSUNG UE48H6230AK TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!

SCHEMATIC MANUAL --------------> SAMSUNG Chassis: U8DC; Model: UE32H6200AW, UE40H6200AW, UE48H6200AW, UE50H6200AW, UE55H6200AW, UE60H6200AWA


 The appearance of the MainBoard BN41-02156A is shown in the figure below:
BN41-02156A
BN41-02156A can be used in TVs:
SAMSUNG UE40H6200 UE40H6200AK (Panel CY-GH040CSLV1V), SAMSUNG UE32H5500 UE32H5500AK (Panel GH032BGA-B2), SAMSUNG UE40H5500 UE40H5500AK (Panel CY-GH040BGLV2V), SAMSUNG UE32H6200AK (Panel CY-GH032CSLV1V), SAMSUNG UE40H6350 (Panel CY-GH040CSLV2V), SAMSUNG UE32H6410AU UE32H6410 (Panel CY-GH032CSLV4V), SAMSUNG UE40H6400AK UE40H6400 (Panel CY-SH040CSL V2H), SAMSUNG UE48H6200 UE48H6200AK (Panel CY-GH048CSLV1V), SAMSUNG UE48H6230AK UE48H6230 (Panel CY-GH048CSLV1V), SAMSUNG UE48H6400AK UE48H6400 (Panel CY-GH048CSLV2V), SAMSUNG UE48H6410AU UE48H6410 (Panel CY-GH048CSLV4V), SAMSUNG UE48H6240AK UE48H6240 (Panel CY-GH048CSLV1V), SAMSUNG UE32H4500AK UE32H4500 (Panel CY-HH032AGLV2V), SAMSUNG UE40H6410 UE40H6410AU (Panel CY-GH040CSLV4V), SAMSUNG UE40H6500 UE40H6500AT (Panel CY-GH040CSLV1V), SAMSUNG UE32H6230 UE32H6230AK (Panel T320HVF05.2), SAMSUNG UE32H4510 UE32H4510AK (Panel HH032AGH-R3 BN96-31086F), SAMSUNG UE32H6350 UE32H6350AK (Panel CY-GH032CSLV2V), SAMSUNG UE40H6230 UE40H6230AK (Panel CY-GH048CSLV1V).
The appearance of the power supply
Main features of the SAMSUNG UE48H6230AK device:
Installed matrix (LED panel) CY-GH048CSLV1V.
The matrix control uses the Timing Controller (T-CON) LSF480HJ01.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by a 7014X PWM controller.
The necessary supply voltages for all nodes of the SAMSUNG UE48H6230AK TV are generated by the BN44-00709A power supply module or its analogs using S3051 (PFC), FA6A01N (FA5760N) microcircuits.
MainBoard - the main board (motherboard) is a BN41-02156A module, using CPU chips: SEMS31; SPI Flash: 25Q40CL; EEPROM: S24C512; SOUND: NTP7414 and others.
The tuner BN40-00288B GT2CX-33X264S / FW-FWS provides the reception of television programs and tuning to channels.

Posted By: FRANK at 07:20
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