Tuesday, 24 December 2019

REPAIRING / SERVICING TV SAMSUNG LE32C530F1

Technical description and composition of the SAMSUNG LE32C530F1 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG
Model: LE32C530F1 LE32C530F1W
Chassis / Version: N82A
Panel: LTF320HM01 // LTF320AP08 // T315HW04 V.2
T-CON: F60MB4C2LV0.6 LAU4041X1A-Q, MAX17122, MAX17121, MAX9591, 24C64WP
Inverter (backlight): SSI320-4UH01
PWM Inverter: SSI091ASN
MOSFET Inverter: AOD4186
Trans Inverter: LT-U2632
Power Supply (PSU): BN44-00339A
PWM Power: FAN7530 (PFC), FSFR1800US, ICE3BR1765J (Stb)
MOSFET Power: 13NM60N
MainBoard: BN41-01331B BN94-02616H // BN41-01536B // BN41-01331B
IC MainBoard: ATMLH004 2EB1, ATMLH002 02B1, STA3698WS, DRV604, SII92287BCNU
Tuner: DTOS40CVL081A
Control: Remote: BN59-01014A, IR BN96-13022B BN41-01382A
Technical Specifications LE32C530
SAMSUNG LE32C530F1
General repair guidelines for TV LCD
Repair of a SAMSUNG LE32C530F1 TV is advisable to start with a careful external examination of all its constituent elements, both internal and external. Inspection is also subject to body elements, control buttons, screen, connectors and cords. Often, according to the external signs and the nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting and localizing the malfunction before making the necessary measurements and taking oscillograms at control points. Ring cracks in the soldering of the leads of the elements, deformed electrolytic capacitors, charred resistors - all this for the repairman can be a hint in assumptions about the causes and consequences of the malfunction.
In the case when the LE32C530F1 does not turn on, does not respond to the remote control and the front panel buttons, does not blink bulbs and does not show any signs of operability, most likely in this case the BN44-00339A power supply module is faulty. In this case, first of all, it is necessary to check the fuse at the input of the network. If it is broken, then you should check for breakdown of the PN junctions of the rectifier bridge diodes and the key transistor of the N-FET converter, which can either be on a separate radiator or integrated with a PWM controller in a common chip. Options are ICE3BR1765J, 13NM60N.
Power switches in flyback converters fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the FAN7530, FSFR1800US PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
It is somewhat more difficult to look for a malfunction in the converter of the power module with an active KKM (power factor corrector).
If the SAMSUNG LE32C530F1 TV does not have an image, but there is sound, the malfunction should be sought in the backlight lamp power converter (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the BP (power supply) for an overstated ESR.
Repair of the SSI320-4UH01 inverter can often be somewhat complicated by the use of special protection circuits, which are designed to shut it down 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). Board repair and replacement of the ATMLH004 2EB1, ATMLH002 02B1, STA3698WS, DRV604, SII92287BCNU microcircuits are carried out with the necessary equipment, and the corresponding element base.
Once again, remind users! Attempts to self-repair a SAMSUNG LE32C530F1 TV without the appropriate qualifications and experience can lead to its complete non-repairability!


SCHEMATICS --->  Samsung Chassis N82A.

FOR MODELS:   Samsung LE32C53***, LE37C53***, LE40C53***, LE46C53***, LE32C57***, LE37C57***, LE40C57***, LE46C57***, LE32C55***, LE37C55***, LE40C55***, LE46C55***, LE26C45***, LE32C45***

PSU SCHEMATICS BN44-00339A.



 The appearance of the MainBoard BN41-01331B is shown in the figure below:
BN41-01331B
BN41-01331B can be used in TVs:
SAMSUNG LA32C450 (Panel LFT320AP08), SAMSUNG LA32C450E1D (Panel LTF320AP08 A10), SAMSUNG LE26C450E1WXRU (Panel LTF260AP04), SAMSUNG LE32C530F1 LE32C53051F5W5405L Panel, LTF320HMF150, SAML5505F150, Panel LTF320HMF150
PSU Advanced
The LE32C530F1 model uses a BN44-00339A power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, it is a boost converter based on the FAN7530 PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
The appearance of the power supply
Main features of the SAMSUNG LE32C530F1 device:
Installed matrix (LCD panel) LTF320HM01 or LTF320AP08 or T315HW04 V.2.
The matrix control uses the Timing Controller (T-CON) F60MB4C2LV0.6.
The SSI320-4UH01 inverter is used to power the backlight, controlled by the SSI091ASN PWM controller. A transformer LT-U2632 is installed in the inverter converter. As power elements of the inverter, keys of the AOD4186 type are used.
The necessary supply voltages for all nodes of the SAMSUNG LE32C530F1 TV are generated by the BN44-00339A power module or its analogs using FAN7530 (PFC), FSFR1800US, ICE3BR1765J (Stb) microcircuits and 13NM60N power switches.
MainBoard - the main board (motherboard) is a BN41-01331B module, using the chips ATMLH004 2EB1, ATMLH002 02B1, STA3698WS, DRV604, SII92287BCNU and others.
The DTOS40CVL081A tuner provides TV reception and channel tuning.
Information from an alternative source:
SAMSUNG LE32C530F1W
Panel Type (Matrix): LTF320HM01,
Motherboard: BN94-02616H, BN41-01331B, ATMLH004 2EB1, ATMLH002 02B1 x2, 25L4005AM2C, K4T1G1640E-HCF8 x2, STA3698WS, DRV604, SII92287BCNU, Tuner: DTOS40CVL0
T-con: F60MB4C2LV0.6, LAU4041X1A-Q, MAX9591, MAX17122, MAX17121E x2, 24C64WP
Invertor: SSI320-4UH01, SSI091ASN, AOD4186 x4, Tr-r: LT-U2632 x2,
PSU: BN44-00339A, ICE3BR1765J, FAN7530, FSFR1800US, 13NM60N, BYV29X600 Schematic BN44-00339A
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF320HM01
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1920x1080, FHD
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 698.4x392.85 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V