Technical description and composition of the SAMSUNG UE46B7000WW TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE46B7000WW UE46B7000
Chassis / Version: SQ01
Panel: LTF460HF08
T-CON: 2009FA7M4C4LV0.9
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00269B PD4612F1_B PSLF171B01B
PWM Power: MC33067P
MainBoard: BN41-01190B BN94-02706W
IC MainBoard: WM8593SEFT, RTL8100CSL, K4T1G164QE-HCE7
Tuner: BN40-00145B TDHG6-K13A
Technical Specifications UE46B7000WW
SAMSUNG UE46B7000WW
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE46B7000WW 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.
With such manifestations, a malfunction is most likely to be detected in the BN44-00269B power supply module. It is then necessary to measure its output voltages and, if they are absent, you should check the power switches and rectifier diodes of the converters for the probability of a short circuit.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the mains fuse and, less often, the current sensor at the source of the key are most often cut off.
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. The MC33067P PWM controller, in the absence of visible damage or open faults between the terminals, is checked by replacement.
- There is no image, there is sound, it responds to the remote control, the channels are switched. In some cases, the image appears when you turn on and immediately disappears.
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. 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.
It should be remembered that it is not possible to determine the open circuit in the LED lines without disassembling the panels with a tester or multimeter without an additional device, for example, a current source. To open all PN junctions connected in series at once, a voltage of several tens of volts may be required. Then it is necessary to open the panel and check each LED separately with a multimeter. If the capabilities of your multimeter do not allow you to open the LED in the forward direction or dual LEd are used, then the PN junction of the emergency zener diode can indirectly serve as a health indicator. In case of LED-a malfunction, the zener diode PN junction will either be cut off or broken into short-circuit.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the BN41-01190B motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, you should update or replace the software (software). In cases of complex repairs of MB (SSB) and in the presence of the necessary skills and equipment, sometimes it may be necessary to replace its WM8593SEFT, RTL8100CSL, K4T1G164QE-HCE7 chips and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
If a tuner BN40-00145B TDHG6-K13A 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 pulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
Once again, remind users! Attempts to self-repair a SAMSUNG UE46B7000WW TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
The appearance of the MainBoard BN41-01190B is shown in the figure below:BN41-01190B
BN41-01190B can be used in TVs:
SAMSUNG UE40B6000VW UE40B6000 (Panel LTF400HF08), SAMSUNG UE46B7000WW UE46B7000 (Panel LTF460HF08), SAMSUNG UE46B6000VW UE46B6000 (Panel LTF460HF08), SAMSUNG UE46B7060WE.
The appearance of the power supply
Main features of the SAMSUNG UE46B7000WW device:
Installed matrix (LED-panel) LTF460HF08.
The matrix control uses the Timing Controller (T-CON) 2009FA7M4C4LV0.9.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE46B7000WW TV is carried out by the BN44-00269B power module, or its analogs using MC33067P microcircuits.
MainBoard - the main board (motherboard) is a module BN41-01190B, using microcircuits WM8593SEFT, RTL8100CSL, K4T1G164QE-HCE7 and others.
The tuner BN40-00145B TDHG6-K13A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF460HF08
Type: a-Si TFT-LCD, Panel
Diagonal size: 46 inch
Resolution: 1920x1080, FHD
Display Mode: SPVA, Normally Black, Transmissive
Active Area: 1018.08x572.67 mm
Frequency: 60Hz
Lamp Type: CCFL
Signal Interface: LVDS (2 ch, 8-bit)