Technical description and composition of the SAMSUNG UE46F5000AK TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE46F5000AK UE46F5000
Panel: CY-HF460BGLV1V
T-CON: BN41-01938A LSF460HN02
LED driver (backlight): integrated into PSU; 235mA
Power Supply (PSU): BN44-00610B L46SF_DPN
PWM Power: FA5695N, FSFR1700XC (PWM Resonant), SQD2011K (Standby)
MOSFET Power: KF12N60
MainBoard: BN41-01955A BN94-06292S
IC MainBoard: SEMS29, S24C256C, K4B1G1646G-BCK0, TP-7412S
Tuner: BN40-00256A
Technical Specifications UE46F5000
SAMSUNG UE46F5000AK
General repair guidelines for TV LCD LED
Possible manifestations of defects
- SAMSUNG UE46F5000AK does not turn on, the indicators on the front panel do not light or flash. The TV does not respond to the control buttons and the remote control.
Failure in such cases should begin to be sought in the power supply circuits - module BN44-00610B. It is necessary to measure its secondary (output) voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of power switches (KF12N60) and rectifier diodes of the converters for possible short circuit.
It should be remembered that in case of breakdowns of semiconductors in the secondary circuits, the converter can crash in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often 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 key parameters. These can be elements supplying the PWM controller, frequency-setting or damping circuits, or negative feedback elements in the stabilization circuit.
PWM controllers FA5695N, FSFR1700XC (PWM Resonant), SQD2011K (Standby), in the absence of visible damage or frank fault between the terminals, are checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
Often in such cases, there is no LED backlight. The reason can be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
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 TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-01955A motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - SEMS29, S24C256C, K4B1G1646G-BCK0, TP-7412S. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
If a tuner BN40-00256A 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 voltage levels and impulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
TV users and owners need to remember that attempts to self-repair a SAMSUNG UE46F5000AK TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
The appearance of the MainBoard BN41-01955A is shown in the figure below:BN41-01955A
BN41-01955A can be used in TVs:
SAMSUNG UE32F5000AK (Panel CY-HF320BGSV1V), SAMSUNG UE32F5020AK (Panel T320HVF03.0), SAMSUNG UE42F5000AK UE42F5000 (Panel HF420BGA-B1), SAMSUNG UE46F5000AK UE46F5000 (Panel CY-HF460BGLV1V), SAMSUNG UE32F4800AW UE32F4800 (Panel CY-HF320AGLV2V).
The appearance of the power supply
Main features of the SAMSUNG UE46F5000AK device:
Installed matrix (LED panel) CY-HF460BGLV1V.
The matrix control uses the Timing Controller (T-CON) BN41-01938A.
To power the backlight LEDs, a converter is used, combined with a power supply.
The necessary supply voltages for all nodes of the SAMSUNG UE46F5000AK TV are generated by the BN44-00610B power supply module or its analogs using the FA5695N, FSFR1700XC (PWM Resonant), SQD2011K (Standby) microcircuits and power switches of the KF12N60 type.
MainBoard - the main board (motherboard) is a BN41-01955A module, using microchips SEMS29, S24C256C, K4B1G1646G-BCK0, TP-7412S and others.
The tuner BN40-00256A provides the reception of television programs and tuning to channels.
