Technical description and composition of the DNS V32D2500 TV, panel type and modules used. The composition of the modules.DNS LED
Model: V32D2500
Chassis / Version: T.MSD309.BA5T
Panel: TY315LK12-ACW1 V315H3-CPE6
LED backlight: MBL-32035D210DH0-V1-60MM
T-CON: V315H3-CPE6
LED driver (backlight): integrated into PSU
PWM LED driver: OB3350CP
Power Supply (PSU): LK-PL320408J MO34130016
PWM Power: OB2273MP
MOSFET Power: 7N80
MainBoard: T.MSD309.BA5T
IC MainBoard: Spi Flash: 25Q32FVS1G, W25X10
Specifications V32D2500
DNS V32D2500
General recommendations for TV LCD LED repair
Possible manifestations of defects
- The DNS V32D2500 TV does not turn on and does not show any signs of operability at all. There is no reaction to either the remote or the front panel control buttons.
Usually with similar manifestations, the defect is caused by faulty elements in the main power module LK-PL320408J. It is necessary to make sure of the presence of its secondary voltages and, in their absence, check the power switches (7N80) and rectifier diodes for a possible short circuit.
In case of breakdowns, for example, of P-N junctions in diodes in secondary circuits, the converter can operate in an emergency mode of short circuit without the formation of output voltages, and with a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements, which can disable it in key mode, or provoke an excess of the maximum current or voltage values. These can be supply, damper circuits, or elements of OOS (negative feedback) stabilization. The reason for the breakdown of the power switch can also be the PWM OB2273MP. It is checked only by replacing it with a known good one.
- There is no image, there is sound, it reacts to the remote control. Or the image may appear for a second when turned on and disappear immediately.
Usually, in such cases, a malfunction is detected in the LED panel backlight nodes. The reason may be both in the power supply of the LEDs, in their serviceability (breakdown or breakage), as well as in the violation of the contact connections of the LED strips.
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the T.MSD309.BA5T motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - Spi Flash: 25Q32FVS1G, W25X10. In cases where a BGA processor is used, its malfunction is usually detected by a local warm-up method.
Owners of the V32D2500 TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> DNS V32D2500, Main: T.MSD309.BA5T, Panel: TY315LK12-ACW1
The appearance of the MainBoard T.MSD309.BA5T is shown in the figure below:T.MSD309.BA5T
T.MSD309.BA5T can be used in TVs:
DNS V40D8200 (Panel LSC400HV02-W05), DNS V32D2500 (Panel TY315LK12-ACW1 V315H3-CPE6), DNS S32DSB1 (Panel T315HB01 V.1), DNS S39DSB1 (Panel V390HJ1-LE1).
External view of the power supply
Main features of the DNS V32D2500 device:
The matrix (LED-panel) TY315LK12-ACW1 V315H3-CPE6 is installed.
Matrix control uses Timing Controller (T-CON) V315H3-CPE6.
A converter combined with a power supply is used to power the backlight LEDs, and is controlled by the OB3350CP PWM controller.
The formation of the necessary supply voltages for all nodes of the DNS V32D2500 TV is carried out by the LK-PL320408J power module, or its analogs using OB2273MP microcircuits and 7N80 power switches.
MainBoard - the main board (motherboard) is a T.MSD309.BA5T module, using Spi Flash chips: 25Q32FVS1G, W25X10 and others.
DNS TV V32D2500 with LCD TY315LK12-ACW1, 32 "(81 cm) 16: 9. on the illumination of areas in the scene.The LCD panel uses direct pixel backlighting with rear-mounted LEDs - Direct LED.
The TY315LK12-ACW1 V315H3-CPE6 matrix and the software of the MainBoard T.MSD309.BA5T provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphics resolution at 1080p (Full HD). The input high-frequency or video signal is decoded in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported media file formats: MP3, WMA, MPEG4, DivX, MKV, JPEG.
Speaker power 20 W (2x10 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, VGA, HDMI x4, USB. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1360x768, 1920x1080. The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
The TV uses the LK-PL320408J power supply.
Dimensions: With stand 731x492x160 mm, Without stand 731x441x80 mm.
TV weight: 6.8 kg.
Attention! The panel TY315LK12-ACW1 V315H3-CPE6 of the DNS V32D2500 LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.