Technical description and composition of the SAMSUNG LE32C350D1 TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE32C350D1
Panel: T315HA01-DB
T-CON: V315B5-XC06 in panel
Inverter (backlight): I32HD_AHS BN44-00369B Rev-1.2
PWM Inverter: LX6523AID (14), LM358F (8)
Power Supply (PSU): BN44-00369B Rev-1.2 - I32HD_AHS
PWM Power: LX6523A, FAN7530 (PFC), ICE3BR0665JZ (Standby)
MOSFET Power: 13NM60, MDD3752 (3)
MainBoard: BN94-02670P
IC MainBoard: 1117Z, M167 950T45,
Tuner: T-TDT5DEUC
SAMSUNG
Model: LE32C350D1 LE32C350D1W
Chassis / Version: N82B
Panel: T315HA01-DB
T-CON: V315B5-XC06
Inverter (backlight): BN44-00369B
PWM Inverter: LX6523AID, LM358F
Trans Inverter: 3324340046EF
Power Supply (PSU): BN44-00369B
PWM Power: LX6523A, FAN7530 (PFC), ICE3BR0665JZ (Standby)
MainBoard: BN41-01537A (BN94-02670Q)
IC MainBoard: K4T1G1640FR-BCF8, Z1031A1, BAOH55, ATMLH016, NTP7300S, DRU603, WT61P802, ATMLH032, ATMLH014
Tuner: DT0S40FVL082A BN40-00197A tuner BN40-00202A
Control: BN59-01005A, IR: BN41-01411A BN96-13063B
Specifications LE32C350
SAMSUNG LE32C350D1
General repair guidelines for TV LCD
Repair SAMSUNG LE32C350D1 must begin with the diagnosis of the malfunction and a thorough inspection of its external and internal elements, including the case. Often, for certain external signs, it is possible to draw some conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In cases where the SAMSUNG LE32C350D1 TV does not turn on, does not respond to the remote control and buttons, any indicators on the front panel do not light up and do not blink, and there are no sounds and no signs of operability at all, the BN44-00369B power supply module is most likely faulty or, which happens much less often - there is no power to the processor on the motherboard. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the possibility of an avalanche or thermal breakdown.
If a breakdown of the power switch of the flyback converter of the power supply unit is detected, it should be remembered that it does not fail without any reasons that should be sought by checking other elements of the primary circuit - electrolytic capacitors, PWM controller ICE3BR0665JZ, LX6523AID, LM358F, which can only be checked by replacing , as well as other semiconductor elements (diodes, transistors, zener diodes).
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
The LE32C350D1 TV model uses the BN44-00369B power module, combined with an inverter (a converter for powering the backlight). In the latest models of LCD and LED TVs, such circuitry is widely used and does not complicate the search for defects in the repair of the module at the component level.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when turned on, but there are sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
Repair of the BN44-00369B inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety when the lamps are depressurized, or short circuits or breaks in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
In such cases, special care should be taken during diagnosis, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or power converters of microcircuits and, if necessary, update the software (software). If it is not possible to replace the MB (SSB) card, you need to check the health of its elements - K4T1G1640FR-BCF8, Z1031A1, BAOH55, ATMLH016, NTP7300S, DRU603, WT61P802, ATMLH032, ATMLH014. Defective components should be replaced.
Once again, remind users! Attempts to self-repair a SAMSUNG LE32C350D1 TV without the appropriate qualifications and experience can lead to its complete non-repairability!
SCHEMATICS: Samsung LE26C35***, LE32C35*** Chassis N82B.
PSU SCHEMATICS: BN44-00369B.
BN41-01537A
PSU Advanced
The LE32C350D1 TV is equipped with a BN44-00369B power module using the PFC (Power Factor Correction) scheme acting as an active filter to eliminate the higher harmonic components of the current consumption. The boost converter based on the FAN7530 PWM controller does not allow the electrolytic capacitor of the input rectifier filter to be connected to the network directly through open diodes, when the reactance (about 15-30 ohms at a frequency of 50 Hz) determines the charge current. As a result of the conversion, the charging current of the capacitor will be determined in such a way that the envelope of the high-frequency pulses of the input current will repeat the phase and shape of the sine wave of the input voltage. The health check of the PFC unit is carried out by measuring the DC voltage on the capacitor of the rectifier network. In operating mode, it should be around 380V, in standby approximately 300V.
The appearance of the power supply
Main features of the SAMSUNG LE32C350D1 device:
Installed matrix (LCD-panel) T315HA01-DB.
The matrix control uses the Timing Controller (T-CON) V315B5-XC06.
To power the backlight, an inverter BN44-00369B is used, it is controlled by the PWM controller LX6523AID, LM358F. A transformer 3324340046EF is installed in the inverter converter.
The necessary supply voltages for all nodes of the SAMSUNG LE32C350D1 TV are generated by the BN44-00369B power module or its analogs using LX6523A, FAN7530 (PFC), ICE3BR0665JZ (Standby) microcircuits.
MainBoard - the main board (motherboard) is a BN41-01537A module, using microcircuits K4T1G1640FR-BCF8, Z1031A1, BAOH55, ATMLH016, NTP7300S, DRU603, WT61P802, ATMLH032, ATMLH014 and others.
Tuner DT0S40FVL082A BN40-00197A The tuner BN40-00202A provides the reception of television programs and tuning to channels.
