Technical description and composition of the SAMSUNG LE23R86 TV, panel type and applicable modules. The composition of the modules.SAMSUNG
Model: LE23R86 LE23R86BCX / FID
Panel: T230XW01 v1
Inverter (backlight): V225-001
PWM Inverter: OZ964SN
Power Supply (PSU): BN44-00158A
PWM Power: F9222L, VIPer12A (Standby), TDA4863 (PFC)
MainBoard: BN41-00813E MP1.0
IC MainBoard: MST3560M-LF-170, SiI9125CTU, SVP-WX68, HYB25D256163CE, 24C256WP, NTP-3000
Tuner: BN40-00096A
Appearance
SAMSUNG LE23R86
General repair guidelines for TV LCD
Possible malfunctions
- SAMSUNG LE23R86 does not turn on at all and does not show any signs of operability. Does not blink indicators and does not respond to control buttons.
In such cases, the BN44-00158A power supply is usually faulty. It is necessary to measure its output voltages, and in case of their absence, check the serviceability of the power switches of the main source converters and PFC, as well as their rectifier diodes for a possible short circuit.
During thermal or avalanche breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the main fuse and, less often, the current sensor at the source of the key most often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. It can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power key can be PWM (PWM) F9222L, VIPer12A (Standby), TDA4863 (PFC). It is checked only by replacement with a known good one.
- There is no image, but there is sound and reaction to the remote control. Or for a second, the image may appear immediately after switching on.
These manifestations can be triggered by a power supply module, or by inverter defects, as well as a distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are in good working condition, then you need to check the converter keys and the secondary windings of the transformers.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The indicator on the front panel blinks, the TV does not turn on in the operating mode, it does not respond to the remote control.
Repair or diagnostics of the BN41-00813E motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) the elements of the MainBoard board - MST3560M-LF-170, SiI9125CTU, SVP-WX68, HYB25D256163CE, 24C256WP, NTP-3000. In cases where the BGA processor is used, its malfunction is usually detected by local heating.
Before changing the tuner BN40-00096A, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Attention to users! Self-repair of a SAMSUNG LE23R86 TV without the appropriate qualifications and the necessary experience can lead to its complete non-repairability!
The appearance of the MainBoard BN41-00813E is shown in the figure below:BN41-00813E
BN41-00813E can be used in TVs:
SAMSUNG LE23R86 LE23R86BCX / FID (Panel T230XW01 v1), SAMSUNG LE37M87BD LE37M87BDX (Panel T370HW02 v.2), SAMSUNG LE52M87BD (Panel LTA520HA03), SAMSUNG LE40N87BDX LE40N87H1 (Panel).
The appearance of the power supply
Main features of the SAMSUNG LE23R86 device:
Installed matrix (LCD panel) T230XW01 v1.
To power the backlight, an inverter V225-001 is used, it is controlled by the PWM controller OZ964SN.
The necessary supply voltages for all nodes of the TV SAMSUNG LE23R86 are formed by the power module BN44-00158A, or its analogs using microcircuits F9222L, VIPer12A (Standby), TDA4863 (PFC).
MainBoard - the main board (motherboard) is a BN41-00813E module, using microcircuits MST3560M-LF-170, SiI9125CTU, SVP-WX68, HYB25D256163CE, 24C256WP, NTP-3000 and others.
The tuner BN40-00096A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: T230XW01 V1
Type: a-Si TFT-LCD, Panel
Diagonal size: 23.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 508.152x285.696 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 700: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 7/1 (Tr / Td)
Frequency: 60Hz
Lamp Type: 8 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V