Technical description and composition of the SAMSUNG LE19C450E1W TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE19C450E1W
Chassis / Version: N82C X4-DVB-LCD4-D1
Panel: 19 inch
Inverter (backlight): integrated into PSU
PWM Inverter: BD9893F
Power Supply (PSU): BN44-00328B FSP035-2PI10
PWM Power: FSQ0465R
MainBoard: BN41-01538A
IC MainBoard: NAND: KFG1G16U2D, EEprom: ATMLH034-2ECL (24C256)
Tuner: DTOS40FVL082A BN40-00197A
Specifications LE19C450
SAMSUNG LE19C450E1W
General repair guidelines for TV LCD
SAMSUNG LE19C450E1W TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. 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 absence of any signs of operability, when the SAMSUNG LE19C450E1W 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 TV's BN44-00328B power module. Diagnostics and repair of the common power supply should always begin with a check of the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for a breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network.
As a rule, the keys in switching power supplies (SMPS) are reliable enough and rarely fail for no reason to be looked for by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is checked by replacing it with a known good one.
If when you turn on the SAMSUNG LE19C450E1W there is no image, or it appears for a second and disappears completely, but there is sound, most likely either the backlight or their power converter (inverter) are faulty. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the general power supply unit. When disabling the inverter protection (to enable diagnostics), 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.
The motherboard BN41-01538A must be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or lights up continuously. In such cases, if the converters or power regulators of the microcircuit are working, a software update may be necessary. Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Checking or replacing NAND elements: KFG1G16U2D, EEprom: ATMLH034-2ECL (24C256) requires the necessary training and professional skills to repair modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
In the absence of tuning to local television channels, you should make sure that the software is correct, as well as the presence of supply voltages at the terminals of the tuner DTOS40FVL082A BN40-00197A.
It is necessary to remember to users that attempts to self-repair a SAMSUNG LE19C450E1W TV without the appropriate qualifications and necessary experience can lead to serious negative consequences!
The appearance of the MainBoard BN41-01538A is shown in the figure below:BN41-01538A
BN41-01538A can be used in TVs:
SAMSUNG LE22C450E1W (Panel H216WA0114Z), SAMSUNG LE19C450E1W (Panel 19 inches).
The appearance of the power supply
Main features of the SAMSUNG LE19C450E1W device:
Installed matrix (LCD-panel) 19 inches.
To power the backlight, a converter is used, combined with a power supply, controlled by the BD9893F PWM controller.
The formation of the necessary supply voltages for all nodes of the SAMSUNG LE19C450E1W TV is carried out by the BN44-00328B power module or its analogs using FSQ0465R microcircuits.
MainBoard - the main board (motherboard) is a BN41-01538A module, using NAND chips: KFG1G16U2D, EEprom: ATMLH034-2ECL (24C256) and others.
Tuner DTOS40FVL082A BN40-00197A provides the reception of television programs and tuning to channels.
