Technical description and composition of the TOSHIBA 32A3000P TV, panel type and applicable modules. The composition of the modules.Toshiba
Model: 32A3000P
Chassis / Version: A3000P
Panel: LC320WX1 // LC320W01-SLA1 75007869
T-CON: 75009279
Inverter (backlight): 6632L-0420A rev0.8 / rev0.9 75012513
PWM Inverter: OZ9966SN
MOSFET Inverter: FDD8447L
Trans Inverter: PW-BCT-3250 BJA4B7525
Power Supply (PSU): PE0252A V28A00032701, PE0253S V28A000326A1
PWM Power: CE-1059
MOSFET Power: DH21AR, TPC8111
Mainboard: PE0288
IC MainBoard: CPU: TC90403FG; Scaler: FLI8541BE
Tuner: ENG37E01GF
Control: CT-865
Specifications 32A3000
TOSHIBA 32A3000P
General recommendations for repairing TV LCD
It is advisable to start any repair and diagnostics of the TOSHIBA 32A3000P TV with a careful external examination of internal and external elements, including case parts, a display, buttons and cables. Sometimes, only by some signs can we determine the further direction of the localization of the malfunction. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
If the power supply module PE0252A V28A00032701, PE0253S V28A000326A1 malfunctions, the external manifestations may be different, for example, the TOSHIBA 32A3000P does not turn on at all and there is no indication of the indicator lights on the front panel. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, the first thing to do is to check the rectifier bridge diodes and the DH21AR power switch for the possibility of an avalanche or thermal breakdown.
Power switches in flyback converters fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If an active Power Factor Corrector (PFC) is used in the power module circuitry, it is sometimes more difficult to troubleshoot. Knowledge, experience, intuition and skills in such cases have a great advantage for a successful repair.
If the TOSHIBA 32A3000P TV does not have an image, but there is sound, the malfunction should be sought in the power converter of the backlight (inverter). It is also necessary to check the serviceability of the electrolytic capacitors of the filter of the secondary rectifiers of the PSU (power supply) for an overstated ESR.
In most cases, the diagnosis and repair of the inverter 6632L-0420A rev0.8 / rev0.9 75012513 is difficult due to the organization of protection, which turns it off in emergency cases to avoid fires during short circuits or open circuits in high-voltage circuits and during depressurization of lamps. Often, repairmen block the protection circuits in order to make the necessary measurements at the control points of the inverter to identify the causes of the defect.
It should be remembered that in such cases there is a risk of failure of the power elements of the inverter and to take special care. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Attention to the owners! Attempts to self-repair the TOSHIBA 32A3000P TV are not recommended by the manufacturer and can lead to serious negative consequences!
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 32A3000P, 37A3000P, 42A3000P, 32A3030P, 37A3030P, 42A3030P
1. Service Manuals with Schematic Diagrams 2 of 2007 files on model 26A3030D, 26A3000P, 26A3032D, 26A3002P, 32A3030D, 32A3000P, 32A3032D, 32A3002P, 37A3030D, 37A3000P, 37A3032D, 37A3002P, 37A3003P, 42A3030D, 42A3000P, 26A3031D, 26A3001PR
2. Service Manuals with Schematic Diagrams 129 pages on models 26A3030D, 26A3000P, 32A3030D, 32A3000P, 37A3030D, 37A3000P, 42A3030D, 42A3000P
The appearance of MainBoard PE0288 is shown in the figure below:PE0288
PE0288 can be used in TVs:
TOSHIBA 26A3000P (Panel LC260WX2 (SL)(E2) 75007721), TOSHIBA 26A3001PR (Panel V260B1-L01 75008418), TOSHIBA 32A3000P (Panel LC320WX1), TOSHIBA 32A3000PR (Panel LC320W01 (SL)(A1), TOSHIBA 37X3000PR (Panel LC370WU1 (SL)(03)), TOSHIBA 42A3000PR (Panel LC420WX7-SLC1 75008814).
Key Features of the TOSHIBA 32A3000P:
Installed matrix (LCD panel) LC320WX1 or LC320W01-SLA1 75007869.
The matrix control uses the Timing Controller (T-CON) 75009279.
To power the backlight, an inverter 6632L-0420A is used, it is controlled by the PWM controller OZ9966SN. The transformer PW-BCT-3250 BJA4B7525 is installed in the inverter converter. As power elements of the inverter, keys of the FDD8447L type are used.
The necessary supply voltages for all nodes of the TOSHIBA 32A3000P TV are generated by the PE0252A power module or its analogs using CE-1059 microcircuits and DH21AR, TPC8111 type power switches.
MainBoard - the main board (motherboard) is a PE0288 module, using CPU chips: TC90403FG; Scaler: FLI8541BE and others.
The ENG37E01GF tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320WX1-SLB1
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 950: 1
Display Colors: 16.7M / 1.06B (8-bit / 8-bit + Dithering)
Response Time: 10/5 (Tr / Td)
Frequency: 120Hz (60Hz Input)
Lamp Type: 18 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8/10-bit), 51 pins
Voltage: 12.0V
TOSHIBA 32A3000 LCD TV with LC320W01 LCD display, 32 ”(81 cm) diagonal size in 16: 9 format. Screen brightness of 500 cd / m² is ensured by backlighting with CCFL (EEFL) fluorescent lamps. The ratio of maximum brightness to minimum (contrast) is 950: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard for 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 takes place in the standard max 480i, 480p, 576i, 576p, 720p, 1080i.
The power of the acoustic system of sound 20 W (2x10 W) provide two speakers. The audio processing system NICAM STEREO is used.
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. 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.
The power consumed by the TV in the operating mode from the network is 155 watts.
Overall dimensions: with stand 800x592x275 mm, without stand 800x545x116 mm.
TV Weight: with stand: 16.2 kg, without stand: 13.5 kg.
Attention! The LC320W01 (SL) panel (A1 of the TOSHIBA 32A3000 LCD TV is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
