LG 42LG30 - Another backlight question, but I've read the others :)

[DLinkOZ]

Grabbed this as a cheap TV for the game room. My symptoms are very similar to this thread:

https://www.badcaps.net/forum/showthread.php?t=20203

I have the same transformer readings, and my fets all seem good. Additionally, if I unplug the output cable from either inverter (disconnect from the ccfls) the TV will power on and stay on, but with no backlight (obviously). If I leave them connected, it power cycles.

It *seems* as though the inverters are good, and I need to inspect the ccfls themselves. Is there a service manual or nugget of wisdom for the easiest path to them? Normally a full tear down would be easy enough, however the TV needs to power on with the lamps exposed to give a proper visual.

Input is greatly appreciated!

[nomoresonys]

Re: LG 42LG30 - Another backlight question, but I've read the others

not sure, maybe a fault coming from inverter/s is causing it to go into protection mode.

[DLinkOZ]

Re: LG 42LG30 - Another backlight question, but I've read the others

I was originally expecting that, but I can unplug either the master or the slave from the ccfl plug and get it stay on. I may be misreading the result, that to me points towards the bulbs.

**EDIT**
To clarify, when I unplug the output to the bulbs I leave both inverters connected and powered on. And I only have to unplug *one* of the outputs - either the master or the slave, either one alone will allow it to stay on.

[DLinkOZ]

Re: LG 42LG30 - Another backlight question, but I've read the others

I got a quick peek under the panel, and I can't see any dark spots. The bulbs look good. so it may be as simple as a set of inverters (for the price, I might as well grab both).

[nomoresonys]

Re: LG 42LG30 - Another backlight question, but I've read the others

I got a quick peek under the panel, and I can't see any dark spots. The bulbs look good. so it may be as simple as a set of inverters (for the price, I might as well grab both).

well if you get some in working order, at least that should rule them out as the problem, please keep us updated.

[DLinkOZ]

Re: LG 42LG30 - Another backlight question, but I've read the others

Replacement inverters did the trick. This is going with another 42" I have in my game room. Opposite corners connected to an xbox 360 kiosk. My game room is also my arcade

[budm]

Re: LG 42LG30 - Another backlight question, but I've read the others

Thanks for the follow-up.