Re: LG 42LK450 Which Wire to Unplug Help
We'll, I didn't get a reading again. Then pulled a dumb move and tried to check the voltage on the fuse, while plugged in. Popped the gfi in the garage, and blew the fuse. I'm in over my head and will bring it in before I do irreversible damage. Thanks for your assistance so far. I hate giving up without at least trying.
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Re: LG 42LK450 Which Wire to Unplug Help
I still get no reading. I tried it with the pin plugged in testing the output and still nothing. I tried to change the multimeter to a different scale and still nothing. Should it be set to dcv on the 20 scale? With the black plugged into the COM hole?
Your absolutely right though- it's definatley my testing. The blue light will only turn on when the pin is connected.
Reminds me of how we troubleshoot computers... 95% of computer problems are located somewhere between the keyboard and the chair.
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Re: LG 42LK450 Which Wire to Unplug Help
Going to go retest now. Back in 5.
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Re: LG 42LK450 Which Wire to Unplug Help
Correct. DMM shows 0 on all of the pins.
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Re: LG 42LK450 Which Wire to Unplug Help
All, I did some more testing today. Plugged it in and tested for power at the connector pins on the cable. There was no voltage on any of the pins/wires. I then tested the fuse next to the plug and it had (130 v?) Then I tested the other fuse (both ends) by the two black inverters and there was no voltage there either. Does this mean the PSU board is bad?
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Re: LG 42LK450 Which Wire to Unplug Help
Tested both fuses. Dmm set on ohm 200 scale - readings for both we're 0.8. Don't know if this is good or bad, nor am I positive I did it correctly.
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Re: LG 42LK450 Which Wire to Unplug Help
I also looked closely at the two fuses - visually they look fine to me. I'm available to work on it the next couple of hours. Txt# is 765-337-5714
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Re: LG 42LK450 Which Wire to Unplug Help
This image work? I'll look at the fuses too....
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Re: LG 42LK450 Which Wire to Unplug Help
Ok. I'll do this when I get home today.
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Re: LG 42LK450 Which Wire to Unplug Help
Yes, but not real experienced with it.
I know how to change the dials and take a reading but not sure what all of the different settings and numbers mean.
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LG 42LK450 Which Wire to Unplug Help
I have an LG 42LK450 that we suspect was hit by a power surge during lightning storm.
The power light comes on and turns blue, but there is no faint picture or glowing at all.
Can someone take a look at these photos and help me troubleshoot what might be bad? From what I've read I need to remove some connections to figure out which boards are bad but don't know where to start or what they are called.
Thanks for any help you can provide.
-Matt...Last edited by mbosma; 12-19-2013, 07:34 AM.
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Re: New Members - please post your introductions here
Howdy. Trying to fix an LG LCD. Thanks for the info!
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