How To Repair Lcd Monitors

Lcd Monitor Repair Made Easy

Lcd Monitor Repair Made Easy consists of High Definition Step-By-Step instructional videos guiding you all the way from the very basics to the most advanced Lcd troubleshooting techniques. Complementary book full of instructions and illustrations with additional insight on Lcd monitor repair. Easy disassembling instructions for all Lcd monitor model types. Revealing the tricks and secrets of troubleshooting and fixing any Lcd monitor in a few minutes. Exactly where to get any part needed. cheaply. so more money goes into your pocket after each repair. Introduction to the principles of Electronics. Electronic testing devices digital multi meters, internal/external power supply, functions generators, Oscilloscope, Lcr Meter. Lcd monitor Parts Inverters, Vga Circuit, Power Supply Boards etc. Passive and Active Matrix Lcd Monitors, Lcd Screens. Advanced Fringe Field Switching, Multi domain vertical alignment, Patterned Vertical Alignment and Advanced Super View. Repairing stuck and dead pixels, rippling patterns, power supply issues, dead pixels, low quality images, horizontal or vertical solid lines. Repairing monitor flickering, wild patters, colored screen (green pink red), dimming side and operating system problems. Continue reading...

Lcd Monitor Repair Made Easy Summary


4.6 stars out of 11 votes

Contents: Ebook
Author: Bob Lime
Official Website:
Price: $37.00

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My Lcd Monitor Repair Made Easy Review

Highly Recommended

I started using this ebook straight away after buying it. This is a guide like no other; it is friendly, direct and full of proven practical tips to develop your skills.

As a whole, this e-book contains everything you need to know about this subject. I would recommend it as a guide for beginners as well as experts and everyone in between.

A87 Backlight Power Supply

Royer Oscillator Power Supply

The LCD display backlight is a cold cathode fluorescent light (CCFL), which requires a high voltage during normal operation. The starting voltage may be as high as 1000 VRMS, the running voltage is about 300 VRMS at 3 ma. This voltage is produced by a resonant Royer oscillator which produces a sinusoidal output waveform at about 50 kHz. The transistors Q305 and Q306 receive their base drive from the transformer. The output waveform is the result of the transformer inductance resonating with C352 and the CCFL reflected capacitance.

A86 LCD Bias Power Supply

The LCD display requires a negative bias voltage (LCDBIAS) that adjusts the contrast of the display. The bias supply is thus an adjustable regulator, controlled by digital signals from the processor. The design is a modified buck regulator whereby the switch is Q307, the output inductor is L309, and the catch diode is D313. In the modified design, the output is taken from the bottom of the catch diode in order to produce a negative voltage. The output voltage is monitored by the regulator via R336. Output current is limited by R337. The output voltage setpoint is established by a DAC inside U307 set by processor signals LCDADJ and LCDCTRL.

3 Software Update

Turn on the power of removable drive and then VR800. The VR800 LCD display shows No Disk . 6. Insert the diskette with updated software file. The VR800 LCD display shows No Disk , Initial , name of drive (e.g. ZIP 100) and updated software file name in order and comes to a standstill at the display below. Memorize the displayed ROM version and date before updating the software.

Diagnostic Tests

This group of tests is used to verify functionality of the switches, LED's, VOLUME knob, LCD display, logo illumination, etc. The tests include Character Test Block Test Switch Test LED Test AC3 SPI Test AC3 MEM Test Contrast Test This test verifies the functionality of the IR Remote. Press a key on the remote and verify that the LCD displays the hexadecimal code identifying the key. The hex display on the LCD remains unchanged until another remote key is pressed. While the remote key is being pressed the IR acknowledge LED will flash and the LCD displays the IR icon along with the hex value. To exit the test, hold down the front panel BYPASS button and press MUTE. When you have successfully exited the test the LCD will display an arrow on the left side pointing to the word REMOTE.

Apunch Rhsl Take

This mode tests if all the segments on the LCD display and the LEDs on the FD-4 top panel are correctly working or not. If the FD-4 is in a normal condition, all the segments on the LCD display will lit solid and the LEDs on the top panel will start blinking. If the FD-4 is not in a normal condition, the faulty segments on the LCD display and or LEDs on the top panel will remain unlit.

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