Technical description and composition of the SAMSUNG UE32FH4003W TV,
panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32FH4003W
Chassis / Version: TS01
Panel: CY DF320AGLV1V
LED backlight: D3GE-320SM0-R2 [07/13/10]
T-CON: 13Y 32AN01S4LV0.1 RT6906B, LAXC021T2B-Q1
LED driver (backlight): integrated into PSU
PWM LED driver: 3013X
MOSFET LED driver: KF4N20LD
Power Supply (PSU): BN44-00664A L32G0-DDY
PWM Power: 3S111
MOSFET Power: KF6N60
MainBoard: BN41-01897A
IC MainBoard: NAND: K9F1G08U0D, RAM: K4B1G1646D-HCH9, SPI Flash: 25Q40, Eeprom: 24C256, Sound: NTP7412S
Tuner: DTTX-51B BN40-00231B
Control: Remote: AA59-00602A; IR: UE6030 BN41-01899B BN96-23845B
Appearance
SAMSUNG UE32FH4003W
General repair guidelines for TV LCD LED
Diagnostics
of malfunctions and repairs SAMSUNG 32FH4003W, as well as other
electronic devices, it is recommended to start with an external
examination of the external and internal elements. 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.
Swollen electrolytic or cermet capacitors, charred resistors, ring
cracks in the soldered terminals of the elements - all this can
significantly help the master to determine the causes and consequences
of the malfunction of the TV.
In cases where the SAMSUNG 32FH4003W TV
does not turn on, does not respond to the remote control and buttons,
no indicators on the front panel light up or blink and there are no
sounds and no signs of operability at all, the power supply module
L32G0-DDY BN44- is most likely to be faulty 00664A or there is no
processor power on the motherboard (a typical defect in some SAMSUNG
TVs). In the general case, first of all, it is necessary to check the
electrolytic capacitors of the secondary rectifier filters and the fuse
at the input of the network. If it is cut off, then it is necessary to
check the diodes of the rectifier bridge and the key transistor of the
converter for a breakdown of the PN junctions, which can either be on a
separate radiator or integrated with a PWM controller in a common chip.
Possible options.
As a rule, the keys in switching power supplies
(SMPS) are reliable enough and rarely fail for no reason to be looked
for by checking other components of the circuit - electrolytic
capacitors, resistors and semiconductor elements of the primary circuit.
The PWM chip is checked by replacing it with a known good one.
Sometimes
the SAMSUNG 32FH4003W TV does not have an image, but there is sound, or
the image appears and immediately disappears. In this case, there is a
high probability of a malfunction of the converter for the backlight
LEDs of the CY DF320AGLV1V panel, or a break in the LED circuit is
possible. In such cases, first of all, it is necessary to verify the
serviceability of all the electrolytic capacitors of the filter by
supplying the LED driver itself, including in the power supply unit
(power supply unit).
In most cases of lack of backlight, it becomes
necessary to disassemble the panel in order to check the LEDs,
connectors, loops and all contact connections. If one or several LEDs
does not work in one line, therefore, they are broken and should be
replaced.
When diagnosing, it is necessary to take into account that
it is impossible to check the open in the circuit of the LED lines
without disassembling the panels with a tester or multimeter. To open
all PN junctions connected in series, a voltage of the order of several
tens of volts is required, and ideally, a current source.
Repair or
diagnostics of the BN41-01897A motherboard should begin by checking the
stabilizers or power converters of its microcircuits. If necessary,
update the software (software).
If it is not possible to replace the
MB board (SSB), you need to check the health of its elements - NAND:
K9F1G08U0D, RAM: K4B1G1646D-HCH9 ,. Defective components should be
replaced.
If you suspect a malfunction of the DTTX-51B BN40-00231B
tuner, first of all, you need to make sure that the voltage of the
varicaps (30-33V) is on the corresponding output of the tuner, as well
as other voltage supplying it.
For owners of the 32FH4003W TV, we
recommend that you contact qualified personnel with experience to
repair! Self-repair attempts without the appropriate knowledge and
skills can lead to serious negative consequences!
The appearance of the MainBoard BN41-01897A is shown in the figure below:
BN41-01897A
BN41-01897A can be used in TVs:
SAMSUNG
UE32FH4003W (Panel CY DF320AGLV1V), SAMSUNG UE39EH5003 UE39EH5003W
(Panel DE390BGA-C1), SAMSUNG UE50ES6907U UE50ES6907 (Panel SE500CSA-B1),
SAMSUNG UE32E3H3400.
Main features of the SAMSUNG UE32FH4003W device:
The matrix (LED panel) CY DF320AGLV1V is installed.
The matrix control uses the Timing Controller (T-CON) 13Y.
To
power the backlight LEDs, a converter is used, combined with a power
supply, controlled by a 3013X PWM controller. As the power elements of
the LED driver, keys of the KF4N20LD type are used.
The formation of
the necessary supply voltages for all nodes of the SAMSUNG UE32FH4003W
TV is carried out by the BN44-00664A power module or its analogs using
3S111 microcircuits and KF6N60 type power switches.
MainBoard - the
main board (motherboard) is a BN41-01897A module, using NAND chips:
K9F1G08U0D, RAM: K4B1G1646D-HCH9, SPI Flash: 25Q40, Eeprom: 24C256,
Sound: NTP7412S and others.
Tuner DTTX-51B BN40-00231B provides the reception of television programs and tuning to channels.
Information from an alternative source:
SAMSUNG UE32FH4003W
Panel Type (Matrix): CY-DF320AGLV1V
Motherboard: BN94-0762M BN41-01897A, Tuner: DTTX-51B / C3 BN40-00231B
T-con: 13Y 32AN01S4LV0.2, RT6906B, IR: UE6030 BN41-01899B
PSU: L32G0-DDY BN44-00664A
Remote control: AA59-00602A