Technical description and composition of the TOSHIBA 32A3000PR TV, panel type and applicable modules. The composition of the modules.Toshiba
Model: 32A3000PR
Chassis / Version: A3000P
Panel: LC320W01 (SL) (A1
T-CON: 6870C-0142B (2L) LC320W01-SLA1
Power Supply (PSU): PE0252 V28A00032701 R-1786 V28A00033000
MainBoard: PE0288 V28A000447A1
IC MainBoard: CPU: TC90403FG; Scaler: FLI8541BE
Tuner: ENG37E01GF
Control: IR: V28A00044803
Specifications 32A3000
TOSHIBA 32A3000PR
General recommendations for repairing TV LCD
It is advisable to start any repair and diagnostics of the TOSHIBA 32A3000PR TV with a careful external examination of internal and external elements, including case parts, a display, buttons and cables. Often, by the external signs and nature of some damage, it is possible to draw preliminary conclusions and determine a further algorithm for troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred paint layer on the resistors - all this for the repairman can be a hint in the assumptions about the causes and consequences of the malfunction.
In cases when the TOSHIBA 32A3000PR TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability when turning on, the power module is most likely faulty or, which happens much less often, there is no processor power on the motherboard. When diagnosing and repairing the power supply, first of all, it is necessary to check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes or power key.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a PWM controller in a single chip, are reliable enough and rarely fail for no reason. The reasons for the breakdown of the key should be sought by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
In such cases, special care should be taken during diagnostics, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
Owners and users of the TOSHIBA 32A3000PR TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!
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).
Main features of the TOSHIBA 32A3000PR device:
Installed matrix (LCD panel) LC320W01 (SL) (A1.
The matrix control uses the Timing Controller (T-CON) 6870C-0142B (2L).
The formation of the necessary supply voltages for all nodes of the TOSHIBA 32A3000PR TV is carried out by the PE0252 power module, or its analogues.
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: LC320W01-SLA1
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: 1000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8/10 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 14 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V