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LST03-V3 LCD Screen Tester - No need to install drivers.

Now you can use LST03 or LST02 to test TTL interface screen, such as NL8060BC31-17, TM121SV-02L01 , LM151X03 …ETC. more details
Version 3
By analysis the most common failures on Inverters on previous version, our engineers had come up with a better circuit design which is a lot more dependable. By simply adding a toggle switch, CCFL inverter will last much longer.

Please click here to download quick start manual
MS492LEDD-KIT - New LED driver for testing from 18.5 to 24" LED screen
Please click here for more details
Panel Wire Harness Connector:
This 30 pin connector has a polarity. Two white dots MUST face up when using our custom wire harness.
Dip Switch
LST03 can test LCD screen size from 8.9 inch up to 42 inhc TV screen with the resolution from 800X600 up to 1920X1200.
Switch On and Off with different setting of Dip switch. Please refer to LST03 Cross Table.
Please refer to your LCD screen specification for the correct Panel voltage supply. Most of Laptop screens are 3.3V
Custom build inverter can test any number of CCFL backlight lamp up to 4 CCFL Lamps.
Inverter Tester Connector
You can test any single lamp inverter. It is especially useful for Laptop screen repair.
6P for Inverter
This 6 pin connector is for testing an external inverter. It is also can be used for LED screen's power supply.
Pin Assignments from left to right.
P1/P2=Power Ground, P3=Adj, P4=Enable, P5/P6=12V DC

LST03 - Quick reference chart

How to set up LST03
  • Identify Makes and part number of the LCD screen
  • Choose a correct wire harness and setting according to LST03 cross refrence table.*
  • Apply setting to Dip switch and Panel B+
  • Connect LCD panel wire harness between LST03 and LCD screen
  • Connect LCD screen's back light to LST03
  • Apply Input Signal to VGA
  • Connect 12V DC to LST03 and Turn it on
  • Push down ENA if you are testing LCD screens that have CCFL backlights

LST03 Cross reference table

Note: 12V DC jack MUST be disconnect and re-connect it back to LST03 for new setting to be effective. 12V DC Jack MUST disconnect before switch to test another LCD screen.

How to test LCD screen

What are the common problems on LCD screen?
Before we start to test LCD screen, we should know what the commom symptoms that LCD screens have: Please click here for the details

LST03 - $239.99
No screen wire harness included, But it does come with AC-Dc and 4 MS321EXT CCFL wire harness.
Note: All LST02 wire harness can be use on LST03

We had also bundled LST03 in 3 different packages:
Laptop Screen Repair Pack
Industrial Repair Pack
LCD TV screen Repair Pack
All packages are included AC-DC Power Adapter and 4 of MS321EXT CCFL wire Adapter.
Laptop screen Tester Kit - $269.99
This Kit includes most common screen wire harness for testing Laptop screen:
Part Number: LST03-LAPTOP

Industrial LCD Screen Tester Kit - $329.99
This Kit includes most common screen wire harness for testing Industrial LCD screen:

TV screen Tester Kit - $289.99
This Kit includes most common screen wire harness for testing LCD TV screen:
Part Number: LST03-TV

How to Test LCD TV Screen

Upgrade option is available for LST02
We do offer an upgrade option for LST02 users. It does not matter if LST02 is working or not.
Customers LST02-V1* LST02-V2*
Domestic $170 $140
International $199.99 $169.99
* Return shipping is included. Ground for Domestic customer. EMS for international customers.
There is no need to contact us for return RMA, please use your order number as a return RMA number and mail ONLY LST02 to:
MoniServ, Inc
Attn: LST02 Upgrade
1600 Noriega Street
San Francisco CA 94122
It usually takes about 4 days. We will contact you for the payment when it is completed. In case you cannot find your order number, please contact us at

Replacement Parts for LST03-V3
MS516LC - Controller Board
Note: MS516LC is also a substitute for LST03-V1 and LST03-V2
MS465DI - Inverter Board

MS104R43NECLEDX1 is a direct replacement for 10.4" NEC Indistrial LCD screen more detail

UB Series LED Backlight
UB series are the direct replacement for Industrial LCD screens that were originally equipped with 2, 4 and 6 CCFL backlight lamps.
XB Sereis LED Backlight
XB Series is designed for smaller industrial LCD panels where space is limited by its original CCFL backlight assembly. In other word, UB series LED strip cannot be mounting on these panels.
Touch Screen Inverter
These are brand new substitute backlight inverter module for Point-of-Sale screen, ATM and other type of touch screen.
LCD Controller
These LCD Controller kits are designed to be easily integrated into the LCD screens that they are commonly used in kiosks, POS, avionics, Vending machine, Digital Signage and all other applications.
LCD Screen Looking for an industrial LCD screen?

Open Frame Display
Direct Drop in Replacement LCD display
Touch Screen
New Resistor and Surface Acustic touch screen
SKD kits come with Sunlight Readable LCD screen and LCD controller kit
LVDS Splitter
One LCD controller can driver two LCD screens and both LCD screens will display the same exact contents
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