Technical description and composition of the SAMSUNG UE40B6000VW TV, panel type and applicable modules. The composition of the modules.SAMSUNG LED
Model: UE40B6000VW UE40B6000
Chassis / Version: SQ01
Panel: LTF400HF08
T-CON: 2009FA7M4C4LV0.9
LED driver (backlight): integrated into PSU
Power Supply (PSU): BN44-00269A PSLF171B01A
PWM Power: MC33067P
MainBoard: BN41-01190B BN94-02662M
IC MainBoard: WM8593SEFT, RTL8100CSL, K4T1G164QE-HCE7
Tuner: BN40-00145B
Technical Specifications UE40B6000VW
SAMSUNG UE40B6000VW
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE40B6000VW 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.
Sometimes with such manifestations, the main power module BN44-00269A is found to be faulty. In this case, it is necessary to measure its output voltages and, if they are absent, it is necessary to check the power switches and rectifier diodes of the converter for a short circuit probability.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most 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 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. The MC33067P PWM controller, in the absence of visible damage or open faults between the terminals, is checked by replacing it with a new one, or one that is known to be working.
- 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.
Usually in such cases, a malfunction is detected in the backlight nodes of the LED panel. 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 is impossible to detect a break in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and to open their transitions, a voltage of several tens of volts is required. Ideally, a current source is suitable for such purposes. You can open the panel and check each LED separately. Typically, Chinese multimeters light up a single 3-volt LED, if you connect the probes in the forward direction to it (red probe to the anode, black to the cathode). In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The indicator blinks or glows constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the BN41-01190B 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). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - WM8593SEFT, RTL8100CSL, K4T1G164QE-HCE7. In cases where the BGA processor is used, its malfunction is usually detected by the local heating method.
Before replacing the tuner BN40-00145B, if there is no tuning to the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Attention TV owners! Attempts to self-repair SAMSUNG UE40B6000VW are not recommended by the manufacturer and can lead to serious negative consequences!
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 UE46B7020 UE46B7020WW (Panel LTF460HF08).
The appearance of the power supply
Main features of the SAMSUNG UE40B6000VW device:
Installed matrix (LED-panel) LTF400HF08.
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 UE40B6000VW TV is carried out by the BN44-00269A power supply module, or its analogs using MC33067P microcircuits.
MainBoard - the main board (motherboard) is a module BN41-01190B, with the use of chips WM8593SEFT, RTL8100CSL, K4T1G164QE-HCE7 and others.
The tuner BN40-00145B provides the reception of television programs and tuning to channels.
