Technical description and composition of the SAMSUNG LE37A615A3F TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE37A615A3F LE37A615
Chassis / Version: GPR32-52SEN
Panel: T370HW02 V.4
T-CON: T370HW02 V402
Inverter (backlight): VIT71037.50 LOGAH REV: 1
PWM Inverter: OZ9643N
Power Supply (PSU): BN44-00216A - PSLF231501C
PWM Power: MC33067P (16), FAN7530 (PFC), FSQ0365RN (Standby)
MainBoard: BN41-00974B BN94-01741U
IC MainBoard: MT8226, MT8291E, NTP-3100, WT61P8, SDP72, D61211GM, HYB25DC256163CE-4, K4T56163QT
Tuner: BN40-00120A // BN40-00124A
Technical Specifications LE37A615A3F
SAMSUNG LE37A615A3F
General repair guidelines for TV LCD
Possible malfunctions
- The SAMSUNG LE37A615A3F TV does not turn on and does not show any signs of operability. There is no reaction to either the remote control or the control buttons from the front panel.
With such manifestations, the BN44-00216A power module usually fails. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary first of all to check the power switches and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns in the secondary circuits, the converter can operate in a short circuit mode, and during a short circuit in the elements of the primary circuit, the mains fuse usually breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power switch may be PWM (MCW) MC33067P (16), FAN7530 (PFC), FSQ0365RN (Standby). It is checked only by replacement with a known good one.
- 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.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
Sometimes, for diagnostic purposes, inverter protection must be disabled. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-00974B 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). 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 chips MT8226, MT8291E, NTP-3100, WT61P8, SDP72, D61211GM, HYB25DC256163CE-4, K4T56163QT and other possible faulty components. Malfunctions associated with the application of BGA soldering technologies are usually easily diagnosed by the heating method.
Before replacing the tuner BN40-00120A // BN40-00124A, if there is no tuning for 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 to users! Self-repair of a SAMSUNG LE37A615A3F TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!
Samsung LE37A615A3E - Panel: T370HW02 V.4, T-Con: T370HW02 V402, Main: BN94-01741U, Power: PSLF231501C.
The appearance of the MainBoard BN41-00974B is shown in the figure below:BN41-00974B
BN41-00974B can be used in TVs:
SAMSUNG LE32A556P1 LE32A556P1F (Panel LTF320HA01 A04), SAMSUNG LE37A552 LE37A552P3R (Panel T370HW02 V.4), SAMSUNG LE37A656A1 LE37A656A1FXRU (Panel T370HW02 V6), SAMSUNG LE32A558P3F (Panel LTF320HA01), SAMSUNG LE40A656A1F (Panel LTF400HC01 A02), SAMSUNG LE37A615A3F LE37A615 (Panel T370HW02 V.4), SAMSUNG LE40A556P1F (Panel V400H1-L03 REV C1), SAMSUNG LE40A558P3F LE40A558 (Panel LTF400HA03), SAMSUNG LE32A656A1F (Panel LTF320HA04).
The appearance of the power supply
Main features of the SAMSUNG LE37A615A3F device:
Installed matrix (LCD panel) T370HW02 V.4.
The matrix control uses the Timing Controller (T-CON) T370HW02.
The VIT71037.50 inverter is used to power the backlight lamps, it is controlled by the OZ9643N PWM controller.
The necessary supply voltages for all nodes of the TV SAMSUNG LE37A615A3F are generated by the power module BN44-00216A, or its analogs using microcircuits MC33067P (16), FAN7530 (PFC), FSQ0365RN (Standby).
MainBoard - the main board (motherboard) is a BN41-00974B module, using chips MT8226, MT8291E, NTP-3100, WT61P8, SDP72, D61211GM, HYB25DC256163CE-4, K4T56163QT and others.
The tuner BN40-00120A // BN40-00124A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T370HW02 V4
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 819.36x460.89 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 2500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V