LED TV Trainer with Fault Detection

Brand: PValley
Model: PV20H08C
Country of origin:China
Assemble/Manufacturer: Bangladesh

 

Technical Specification:

A TV Trainer with Fault Simulation is a complete training system designed to teach students how a Television receiver works, including signal flow, section-wise operation, troubleshooting, and real- time fault diagnosis.

Suitable for: TV servicing labs, vocational institutes, diploma engineering, and electronics training centers.

Technical Specification:

1. Physical & Power Parameters

• Power Supply: 220V AC, 50Hz
• Dimensions: 24″–36″ trainer board
• Weight: 8–15 kg
• Mounting: Table-top aluminium and metal enclosure, ACP panel for panel part

1. Display Section

• Type: LED TV / LCD TV (Trainer version)
• Screen Size: 22″ to 32″ (depending on model)
• Resolution: 1366×768 or Full HD 1920×1080
• Supported Formats: PAL / NTSC
• Audio Output: 5W–10W

1. Internal Functional Blocks (Exposed for Training)

The trainer exposes all key sections through test points:

1. SMPS Power Supply Section
   • AC input: 220V
   • Output rails: +5V, +12V, +24V (varies by TV model)
   • Short-circuit & overload protection
2. Main Board Section
   • Video processing IC
   • Audio amplifier section
   • Tuner section
   • HDMI/VGA/AV input processing
   • EEPROM & memory control
3. Panel Driver Section
   • T-CON board
   • LVDS interface
   • Backlight inverter / LED driver
4. Remote Control Section
   • IR sensor exposed
   • Keypad control interface

1. Fault Simulation System

• All common faults introduced via switch-controlled fault creation panel

Common Simulated Faults:

• No power
• No sound
• No display (backlight fault)
• White screen
• Color missing (R/G/B missing)
• Picture distortions
• SMPS output fault
• Tuner section failure
• Audio stage failure
• Memory corruption
• Remote control not working
• Number of Faults: 20–40 (depending on model)
• Fault insertion type:
  • Toggle switch
  • Rotary switch
  • Microcontroller-based digital fault system (advanced models)

1. Test Points & Measurement

• 30–60 test points across circuits
• Safe low-voltage testing
• Provided measurement points:
  • Voltage rails
  • Audio signal
  • Video signal
  • Data lines (I²C, LVDS)
  • Backlight driver test points

1. Safety & Protection

• Over-voltage protection
• Fuse protection
• Anti-static front panel
• Short-circuit protection in trainer circuitry

1. Standard experiment list

• Display function test
• Audio output test
• Video resolution test
• Power supply output test
• Short-circuit and overload protection test
• Main board signal and component test
• Tuner and input interface test
• Panel driver and backlight test
• Remote control function test
• Fault simulation – No power
• Fault simulation – No sound
• Fault simulation – No display / Backlight fault
• Fault simulation – White screen
• Fault simulation – Color missing (R/G/B)
• Fault simulation – Picture distortion
• Fault simulation – SMPS fault
• Fault simulation – Audio stage fault
• Fault simulation – Memory fault
• Fault simulation – Remote control failure
• Test point measurement (Voltage, Audio, Video, Data lines)

1. Standard Accessories

• Remote Control
• Instructor manual & student workbook
• Circuit diagram (block + schematic)
• Patch cords
• Multimeter probes
• Power cable

Warranty: One Year