SAMSUNG LED
Model: UE32EH6037K
Chassis / Version: BN41-01894A
Panel: LTJ320HW10-L
T-CON: BN41-01892 (LSJ320HW02-S)
Power Supply (PSU): BN44-00551B - PD32CV1-CHS
MainBoard: BN41-01894A
IC MainBoard: Winbond, 25Q40, AOZ1051PI, SPI: 25Q40BV, EEPROM: 24C256, 1117
Tuner: BN40-00239B
Appearance
SAMSUNG UE32EH6037K
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular SAMSUNG UE32EH6037, it is advisable to start with a careful external examination of internal and external elements. Visible damage to elements can sometimes indicate the direction of the search for a defect even before the necessary measurements are taken. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
In the absence of any signs of operability, when the SAMSUNG UE32EH6037 does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the BN44-00551B - PD32CV1-CHS power supply module of the TV. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (IIP) it does not fail by itself for no reason that you should look for by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
In cases where the SAMSUNG UE32EH6037 TV has lost an image, and the sound is there and all other functions are operational, there is a possibility of a malfunction of the LED driver (converter for powering the backlight LEDs of the LTJ320HW10-L panel). When you turn on the TV, the image may appear briefly and disappear immediately. It must be borne in mind that with such manifestations the LEDs themselves also fail.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as the contact connections in the connectors and soldering.
When diagnosing, it is necessary to take into account that it is impossible to check the open in the chain of LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally, a current source.
Repair of the BN41-01894A motherboard must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace Winbond 25Q40, AOZ1051PI, 1117 elements. Faults in BGA chips are usually easy to detect by heating.
Before replacing the tuner BN40-00239B, if there is no tuning to the channels, first you need to check the supply voltage at its terminals, including the power supply of varicaps (30-33V).
Once again, we remind TV users: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of repair of electronic equipment.
The appearance of the MainBoard BN41-01894A is shown in the figure below:BN41-01894A
BN41-01894A can be used in TVs:
SAMSUNG UE32EH6037K (Panel LTJ320HW10-L), SAMSUNG UE46EH6037 K (Panel LTJ460HW10-L), SAMSUNG UE40EH6037 (Panel LTJ400HV11-L), SAMSUNG UE46EH6030 (Panel LTJ460HW10-V).
The appearance of the power supply
Main features of the SAMSUNG UE32EH6037K device:
Installed matrix (LED panel) LTJ320HW10-L.
The matrix control uses the Timing Controller (T-CON) BN41-01892.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE32EH6037K TV is carried out by the BN44-00551B power module, or its analogues.
MainBoard - the main board (motherboard) is a BN41-01894A module, with the use of Winbond, 25Q40, AOZ1051PI, SPI: 25Q40BV, EEPROM: 24C256, 1117 and others.
The tuner BN40-00239B provides the reception of television programs and tuning to channels.