Technical description and composition of the SAMSUNG LE32M87BD TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE32M87BD LE32M87BDX
Chassis / Version: GTU32HEN
Panel: T315XW02 V.F
T-CON: T315XW02 VF
Inverter (backlight): T315XW02 V.F F10V0411-01
Power Supply (PSU): BN44-00156B
PWM Power: MC33067P, STR-A6159 (Standby)
MainBoard: BN41-00899A + Subboard BN41-00895B
IC MainBoard: M308A0S GP, SGTV5810C, BA7657F, NTP-З000
Tuner: BN40-00096A DN0S403MH261B (S)
Control: IR: BN41-00850A
Specifications LE32M87BD
SAMSUNG LE32M87BD
General repair guidelines for TV LCD
It is advisable to start any repair and diagnostics of the SAMSUNG LE32M87BD TV with a careful external examination of internal and external elements, including case parts, a display, buttons and cables. It often happens that some damage to elements or connections will help determine the direction of troubleshooting and localization of the defect. In some cases, faulty elements are visible to the naked eye, for example, charred resistors or swollen metal-ceramic capacitors, or electrolytic in rectifier filters. Ring cracks formed in the soldering of the terminals of transformers or heating elements of the circuit are also frequent sources of many malfunctions with a variety of external manifestations.
In the case when the LE32M87BD does not turn on, does not respond to the remote control and buttons on the front panel, does not blink bulbs and does not show any signs of operability, most likely in this case the BN44-00156B power module is faulty. It is advisable to start the troubleshooting of the power supply module by checking the mains fuse. If it is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and the power switch of the converter, which are often found in breakdown conditions in such situations.
It should be remembered that in the practice of repair, usually the power keys of N-Fet converters do not fail due to their poor quality and, in such cases, it is necessary to look for the reason that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dried electrolytic capacitors or dangling resistors in the primary circuit, or the microcircuit of the PWM controller MC33067P, STR-A6159, may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If there is no image when you turn on the SAMSUNG LE32M87BD, or it appears for a second and disappears completely, but there is sound, most likely either the backlight or the power converter (inverter) are malfunctioning. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit.
In most cases, the diagnosis and repair of the T315XW02 V.F F10V0411-01 inverter is difficult due to the organization of protection, which turns it off in emergency cases to avoid fires during short circuits or open circuits in high voltage circuits and when the lamps are depressurized. Often, repairmen block the protection circuits in order to make the necessary measurements at the control points of the inverter to identify the causes of the defect.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
In cases of attempts to repair the motherboard BN63-02494A, BN41-00895B, BN94-01382B, it is necessary to check the operability of the power supply circuits of the microcircuits and, if possible, update the software (software). In some cases, it is necessary to check or replace (if necessary) the elements of the MB board (SSB) - SGTV5810C, BA7657F, Tuner DN0S403MH26.
Attention to users! Self-repair of a SAMSUNG LE32M87BD TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATICS ----> Samsung LE32M87BDX Chassis GTU32HEN.
The appearance of the MainBoard BN41-00899A is shown in the figure below:BN41-00899A
The appearance of the power supply
Main features of the SAMSUNG LE32M87BD device:
Installed matrix (LCD panel) T315XW02 V.F.
The matrix control uses the Timing Controller (T-CON) T315XW02.
To power the backlight used inverter T315XW02.
The formation of the necessary supply voltages for all nodes of the SAMSUNG LE32M87BD TV is carried out by the BN44-00156B power module, or its analogues using MC33067P, STR-A6159 (Standby) microcircuits.
MainBoard - the main board (motherboard) is a module BN41-00899A, using microcircuits M308A0S GP, SGTV5810C, BA7657F, NTP-З000 and others.
The tuner BN40-00096A DN0S403MH261B (S) provides the reception of television programs and tuning to channels.
Information from an alternative source:
Samsung LE32M87BD chassis GTU32HEN
Motherboard: BN63-02494A, SGTV5810C, BA7657F, Tuner: DN0S403MH26, SUB BOARD: BN41-00895B BN94-01382B
T-con: T315XW02 VF,
Invertor: T315XW02 V.F F10V0411-01
PSU: BN44-00156B, MC33067P, STR-A6159
Additional technical information about the panel:
Brand: AUO
Model: T315XW02 VF
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1800: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 5.5 (G to G)
Frequency: 120Hz (60Hz Input)
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
