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Monitor Repair Log and Database. **Arcade and Gaming** => LCD and CRT Monitor Repair Tech Support => Topic started by: Yoeddy1 on June 25, 2015, 01:04:37 AM

Title: LCD Inverter...what does it do? Causes that require replacement?
Post by: Yoeddy1 on June 25, 2015, 01:04:37 AM

Hi All,

What is the purpose of an LCD inverter?  I noticed that this is around 40 to 50 bucks and is fairly easy to access...at least on a Kristal 19" LCD in a WMS BB1.  I'm assuming that's what's inside of the rectangular box on the back right hand side of the monitor. 

What are the symptoms that lead up to an inverter needing to be replaced? 

Thanks,
Jason

Title: Re: LCD Inverter...what does it do? Causes that require replacement?
Post by: Tilt on June 25, 2015, 07:51:32 AM

Essentially it is the power supply for the cold cathode fluorescent lamp (CCFL) backlight in the LCD panel.  They typically either work or they don't.  If it fails the CCFL will not light and you will have a black screen.  LED back lighting in newer LCD panels has replaced both inverters and CCFL tubes.

Title: Re: LCD Inverter...what does it do? Causes that require replacement?
Post by: Yoeddy1 on June 25, 2015, 08:25:01 AM

Quote from: Tilt on June 25, 2015, 07:51:32 AM

Essentially it is the power supply for the cold cathode fluorescent lamp (CCFL) backlight in the LCD panel.  They typically either work or they don't.  If it fails the CCFL will not light and you will have a black screen.  LED back lighting in newer LCD panels has replaced both inverters and CCFL tubes.

Perfect!  Thanks for the information Tilt!

Jason