Re: Universal Backlight Inverter?

Hi,

I also have a small question regarding this matter.

I have a monitor without inverter (Dell 2007fpb). Luckily I have one inverter sitting around from another monitor (Viewsonic vp201b).
Now Dell supplies around 19.3V to the inverter, and Viewsonic had 18V line. Would it be safe to use this Viewsonic inverter, or should I somehow try to drop the 19V to near 18V?

Re: LG W2242T inverter

Yep, PlainBill was right. It was the transformer.

I fixed my oscilloscope (power button), and checked the driver outputs and transistors. Seemed that everything besides the transformer were ok. I soldered the transformer out and measured it again. Now secondaries showed almost 1k and the dead side below 800 ohms.

Anyway, I modded universal lcd inverter in there for now, and it works now

Re: LG W2242T inverter



The transformer doesn't make any sounds.

I just tested that gate1 (OutB) shows 2V, and gate2 (OutA) 22V (backlight on).
And 0V and 27V when off....

Hello to all!

I have a small problem with my LG W2242T monitor.

[B]Symptom:[/B]

The backlight lids on for a couple of seconds and then shuts down. Picture shows up ok.

[B]What has been tested:[/B]

- The CCFL-tubes are ok. I tested them with another inverter, and also tried to cross the upper and lower tubes.
And seems that another side of inverter is dead (never lids up, even tested with another ccfl-tubes).
- Caps seems to be ok, at least from the outside.
- Transistors aren't at least short circuited...