LST02 - How to isolate the problem on Laptop Screen
Testing Laptop Screen CCFL Back Light Lamp
Step1: Connecting CCFL back light to LST02
Use MS321EXT wire adapter and connect between Laptop screen back light lamp and any port of CCFL output on LST02
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Step2: Apply VGA single to LST02.
You MUST apply VGA analog signal to LST02 since it has a built-in Controller,
otherwise, LST02 will shut it off in few seconds.
Step3: Connect 12V Adapter
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Step4: Push On/Off button to turn on LST02
The defective CCFL back light lamp usually has the following symptoms:
- CCFL Lamp lights up in a reddish or pinkish color, but gradually becomes normal
- CCFL Lamp lights up half bright and half dim
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If the Laptop screen lights up, then your CCFL back light is working fine (You can also confirm that by turning
on the laptop computer; you should see all contents on the screen).
Then the problem may be caused by the defective inverter. |
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Testing Laptop Inverter
There is no need to apply 12V and VGA signal to test the laptop Inverter.
Step1: Disconnect 12V AC Adapter
Step2: Disconnect VGA Cable
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Step3: Connect Inverter Tester' Connector to Lapto Inverter |
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Turn on your Laptop Computer. If the lamp lights up, then the inverter is working fine.
In a rare case, you may have to leave LST02 on for few minutes |
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LST01
No more guess works!
LST01 is a custom build tester for Laptop screen repair;
it can help you to isolate the problem between CCFL Backlight Lamp and Inverter in seconds.
Save Time! Save money!
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LST02
It has all LST01’s features, plus a built–in LCD Controller
that equips with our proprietary driver. It allows you to apply any
test pattern through VGA input and test all types of specification on the LCD
and LED Screen. In addition, a custom design Inverter allows you
to test any given number of CCFL back light lamp up to 4 at the time. |
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IT01
IT01 is design to test multiple backlight lamps inverter;
it is capable to test any type of inverter up to 6 lamps at the time!
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IT02
Stand alone Inverter tester!
The advantage of this custom build tester is that, you can apply any input voltage
through DC Jack to test inverter from Laptop to LCD TV inverter.
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