Technical description and composition of the SAMSUNG UE40H4200AK TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40H4200AK
Panel: CY-HH040AGLV1V
T-CON: 14Y-VD40HDMB7S4LV0.3 SM4151
LED driver (backlight): BN44-00754A
MOSFET LED driver: 4061A
Power Supply (PSU): BN44-00754A
PWM Power: S3330 (FAN6755)
MOSFET Power: MDD5N40, 60R580P
MainBoard: BN41-02217B BN94-07912P
IC MainBoard: SENK14 25Q40CLSIP S24C256C F59L1G81A K4B2G164GQ-BCKO
Tuner: BN40-00287A
Technical Specifications UE40H4200
SAMSUNG UE40H4200AK
General repair guidelines for TV LCD LED
Repair of the SAMSUNG UE40H4200 TV should begin with a fault diagnosis, which involves a careful examination of the external and internal elements of the device. Often by the external signs and nature of the damage to the elements, it becomes possible to draw some conclusions and determine a further algorithm for finding a defect before making the necessary measurements at control points. In some cases, faulty elements are visible to the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldered terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
If the UE40H4200 TV does not turn on, does not make any sounds when it is turned on, and also no indicators on the front panel light or blink, there is a high probability of a malfunction in the power module. In some cases, only the stabilizer or power converter of the control processor may be faulty, which is typical for some SAMSUNG models. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power switch (s) of the converter.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the PWM controller chip S3330 4061A 60R580P MDD5N40, which can only be checked by replacing with a new or obviously working one.
If there is no image when you turn on the SAMSUNG UE40H4200, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the backlight LED circuit of the CY-HH040AGLV1V panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source.
In cases of attempts to repair the motherboard BN41-02217B BN94-07912P, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements SENK14 25Q40CLSIP S24C256C F59L1G81A K4B2G164GQ-BCKO. BGA chip malfunctions are usually easy to detect by warming up.
Before replacing the tuner BN40-00287A, if there is no tuning to the channels, you must first check the supply voltage at its terminals.
Remember! Attempts to self-repair by users of the SAMSUNG UE40H4200 TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
FIRMWARE FOR SPI FLASH AND EEPROM --------------------> SAMSUNG UE40H4200 , Main: BN41-02217B BN94-07912P, Panel: CY-HH040AGLV1V
Appearance of MainBoard and voltage measurements at test points BN41-02217B:BN41-02217B
BN41-02217B can be used in TVs:
SAMSUNG UE40H4200AK (Panel CY-HH040AGLV1V), SAMSUNG UE40H5300AK (Panel CY-HH040BGNV1V), SAMSUNG UE48H4200AK (Panel CY-HH048AGLV1V), SAMSUNG UE40H5003AK UE40H5003 (Panel CY-HH040BGNV1V / V400HJ6-PE1 Rev. C7).
The appearance of the power supply
Main features of the SAMSUNG UE40H4200AK device:
Installed matrix (LED panel) CY-HH040AGLV1V.
The matrix control uses the Timing Controller (T-CON) 14Y-VD40HDMB7S4LV0.3.
The LED driver BN44-00754A is used to power the backlight LEDs. As power elements of the LED driver, keys of type 4061A are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40H4200AK television are generated by the BN44-00754A power supply module or its analogs using S3330 microcircuits (FAN6755) and power switches of the MDD5N40, 60R580P type.
MainBoard - the main board (motherboard) is a BN41-02217B module, using SENK14 25Q40CLSIP S24C256C F59L1G81A K4B2G164GQ-BCKO chips and others.
The tuner BN40-00287A provides the reception of television programs and tuning to channels.
