Re: Lg 47lk520 no start pulsing led
The drawing you have appears to mimick the one it have. Not 100% accurate, but fairly good lots of options. Most of the majors exist and are as shown.
Thin film
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Last Activity: 06-15-2015, 06:51 PM
Joined: 06-01-2015
Location: Pa
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Re: Lg 47lk520 no start pulsing led
Oh and pin 24 at main board is hi resistance to ground.Leave a comment:
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Re: Lg 47lk520 no start pulsing led
R475 does not exist on my board. Hi resistance it ground. Also verified that r475 missing. Spot exists but not populated. I've looked at these boards a lot thats how I found it so fast.
Pin 24 to pin 24 direct connection ,
continuity.Leave a comment:
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Re: Lg 47lk520 no start pulsing led
I think its 3.3 logic but im not 100%
First photo overall 2nd photo at power supply.
I guess I could fire up the power supply by itself and read the error volt at the power board.
Could not post the photos from where i was earlier....Leave a comment:
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Re: Lg 47lk520 no start pulsing led
Attempting to post photo. Need to switch between three devices to do so give me a minute or so.Leave a comment:
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Re: Lg 47lk520 no start pulsing led
The output from the power supply error line is to be digital low if there is no errors.
It is to be digital hi if there is some type of error.
So again should I consider .70 volts digital low in an Lg model indicating no error. Or should I consider it digital hi indicating an error.
I want to know what the limits are to set digital hi or low in the error line from the power supply.Leave a comment:
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Lg 47lk520 no start pulsing led
Should I consider .70 volts at the error output of the power supply board low? Or hi. I obtained this with the logic board connected and power button pressed and Led pulsing Red.
It should be low by the service info I have. -
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Hello new here.
Sound engineer as in live sound for close to twenty years. Repair just about everything, electronic and mechanical at one time or another. Recone loudspeakers, rebuild transmissions, troubleshoot automotive electronics by day.Leave a comment:
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