Technical description and composition of the TOSHIBA 32AV615DG TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 32AV615DG
Chassis / Version: 715G3431-1
Panel: LC320WXN (SB) (B1)
Inverter (backlight): RDENC2590TPZA
Power Supply (PSU): 715G3553-P01-000-003U
MainBoard: 715G3431-1
Specifications 32AV615D
TOSHIBA 32AV615DG
General recommendations for repairing TV LCD
Possible malfunctions
- The TOSHIBA 32AV615DG TV does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
In such cases, the 715G3553-P01-000-003U power supply is usually faulty. It is necessary to measure its output voltages and, in case of their absence, check the serviceability of power switches and rectifier diodes in the converters for possible breakdown.
In case of any breakdowns in the secondary circuits, the converter can operate in emergency short-circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key more 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. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. PWM controllers (PWM), in the absence of external damage and short circuit between the terminals, are checked by replacing with obviously good ones.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
These manifestations can be triggered by a power module, or by defects in the inverter, 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 working, 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 circuit should be restored immediately after the repair is completed.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 715G3431-1 motherboard should begin by checking the stabilizers and power converters needed to power the microcircuit and matrix. If necessary, update or replace the software (software).
Attention TV owners! Attempts at self-repair of TOSHIBA 32AV615DG are not recommended by the manufacturer and can lead to serious negative consequences!
1. Service Manual 70 pages on models 26AV603PG, 32AV603PG, 32AV605PB, 32AV607PG, 32AV615DB.
2. Service Manuals with Schematic Diagrams 64 pages on models 26AV615DB, 26AV605PB, 26AV605PR 32AV615DB.
3. Service Manuals with Schematic Diagrams 69 pages on models 32AV607PG, 32AV605PB, 32AV615DB.
Repair MainBoard
The appearance of the MainBoard 715G3431 is shown in the figure below:
715G3431
Main features of the TOSHIBA 32AV615DG device:
Installed matrix (LCD panel) LC320WXN (SB) (B1).
The RDENC2590TPZA inverter is used to power the backlight.
The formation of the necessary supply voltages for all nodes of the TOSHIBA 32AV615DG TV is carried out by the power supply module 715G3553-P01-000-003U, or its analogs.
MainBoard - the main board (motherboard) is a 715G3431-1 module.
TOSHIBA 32AV615D LCD TV with LC320WXN LCD display, 32 "(81 cm) diagonal size in 16: 9 format. 500 cd / m² screen brightness is provided by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 18000: 1 is achieved by special operation control It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the speaker system is 40 watts. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, component, SCART x2, RGB, VGA, HDMI x3. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
A digital tuner is capable of receiving television channels in DVB-T standards.
The power consumed by the TV in the operating mode from the network is 160 watts.
Overall dimensions: with stand 786x571x271 mm, without stand 786x525x91 mm.
TV Weight: with stand: 13.8 kg, without stand: 12.3 kg.
Attention! The TOSHIBA 32AV615D LCD TV panel LC320WXN (SB) (B1) is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!