Technical description and composition of the TOSHIBA 32C3500PR TV, type of panel and applicable modules. The composition of the modules.Toshiba
Model: 32C3500PR
Chassis / Version: PE0424
Panel: AX080E002B
T-CON: MKD 336V-0 n 19100057
Inverter (backlight): HIU-813-M HRevF-7BL7-2515 HPC-1655E // HIU-813-S HPC-1655E
PWM Inverter: BD9897FS (32), LM2901 (14) LM2904 (8)
MOSFET Inverter: FDD8447L
Trans Inverter: 331 7YBHK
Power Supply (PSU): PE0391 V28A00053101
PWM Power: STR-Z2467, STR-W6765, CE-1059
MainBoard: PE0424, PE0415
IC MainBoard: A8246AHQ, MSP4410K 07, T5CB5-6UK1, CD4052B, R4580I
Tuner: ENG37E01GF
Control: CT-90288
Specifications 32C3500PR
TOSHIBA 32C3500PR
General recommendations for repairing TV LCD
It is advisable to start any repair and diagnostics of the TOSHIBA 32C3500PR TV with a careful external examination of internal and external elements, including case parts, a display, buttons and cables. It often happens that some damage to elements or connections will help determine the correct direction in troubleshooting and localizing a defect. Experienced repairmen are often aware of the causes of the defect and the possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In the absence of any signs of operability, when the TOSHIBA 32C3500PR does not turn on and does not signal anything with the control lights on the panel, the power module is most likely faulty. When diagnosing and repairing the power supply, first of all, it is necessary to check the fuse, and if it breaks, you should check the power switch and rectifier bridge diodes for avalanche (thermal) breakdown.
In most cases, a breakdown of the N-Fet converter key does not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM chip from the manufacturer.
When using a power factor correction unit (PFC) in the power modules, troubleshooting becomes somewhat more complicated and requires additional experience and knowledge of their operation.
If the TOSHIBA 32C3500PR does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
Diagnostics of the inverter HIU-813-M HRevF-7BL7-2515 HPC-1655E // HIU-813-S HPC-1655E can be difficult due to the protection that is organized by the designers to prevent negative consequences or fires in emergency cases, for example, during short circuits or breaks in the power supply circuit of the lamps, as well as their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
When disabling protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all regular protection circuits should be restored.
It should be remembered! Attempts to repair the TOSHIBA 32C3500PR TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
Service Manuals with Schematic Diagrams 146 pages 2007 on models 32C3500P, 32C3500PR, 32C3502P, 32C3005P, 32C3006P, 37C3500P, 37C3502P, 37C3005P, 37C3006P, 42C3500P, 42C3502P, 42C3005P, 42C3006P
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> Toshiba 32C3500P Service manual and schematic diagram
The appearance of MainBoard PE0424 is shown in the figure below:PE0424
PE0424 can be used in TVs:
TOSHIBA 32C3006PR (Panel LCD PANEL AX080E002B 75007870), TOSHIBA 32C3500PR (Panel AX080E002B), TOSHIBA 37C3500PR (Panel LC370WX4 (SL)(C1)), TOSHIBA 42C3500PR (Panel LC420WX8-SLC1 75009814).
Key Features of the TOSHIBA 32C3500PR:
Installed matrix (LCD-panel) AX080E002B.
The matrix control uses the MKD Timing Controller (T-CON).
The HIU-813-M inverter is used to power the backlight, it is controlled by the BD9897FS (32), LM2901 (14) LM2904 (8) PWM controller. A transformer 331 7YBHK 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 32C3500PR TV are generated by the PE0391 power module or its analogs using the STR-Z2467, STR-W6765, CE-1059 microcircuits.
MainBoard - the main board (motherboard) is a PE0424 module, using microcircuits A8246AHQ, MSP4410K 07, T5CB5-6UK1, CD4052B, R4580I and others.
The ENG37E01GF tuner provides television reception and channel tuning.
Additional technical information about the panel:
Brand: IPS Alpha
Model: AX080E002B
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: IPS-Pro, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare
Brightness: 500 cd / m²
Contrast Ratio: 950: 1
Display Colors: 16.7M (8-bit)
Response Time: 8/6 (Tr / Td); 17 (MPRT)
Frequency: 60Hz
Lamp Type: 16 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 41 pins
Voltage: 12.0V
TOSHIBA 32C3500PR LCD TV with AX080E002B LCD, 32 "(81 cm) diagonal size in 16: 9 format. The ratio of maximum brightness to minimum (contrast) is 950: 1. Dynamic contrast 4800: 1 is achieved by special control of the backlight. Possible viewing 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 takes place in standard mouths 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the sound speaker system 20 W (2x10 W) provide two speakers. 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 x2, component, SCART x2, RGB, VGA, HDMI x2. 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, 1280x1024.
The power consumed by the TV in the operating mode from the network is 146 watts.
Overall dimensions: with stand 800x592x284 mm, without stand 800x545x118 mm.
TV Weight: with stand: 16.7 kg, without stand: 14.8 kg.
Attention! The TOSHIBA 32C3500PR LCD TV panel AX080E002B is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!