Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
Okay, I tested and I see lights with one test on the +LED1 and one of the -LED1, nothing on the rest of the test. I check the +LED1 a third time and now the lights don't come on at all. So I am assuming this means that I need new LED's?
Thanks again!
Jermo133
Member
Last Activity: 02-02-2020, 11:37 AM
Joined: 02-20-2019
Location: Waterville
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
Budm, the LED tester came in today. What would be the best way to go about testing the LED's? Thanks!Leave a comment:
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
Here is the picture of all the boards, and The model numbers I see. The rating on the C8110 cap is 100v
Thanks!...Leave a comment:
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
Thanks again budm, I really appreciate the help. The tv is only a few years old and I would hate to throw it out. I ordered the tester and it should be here in a couple days. I'll let you know what I find.Leave a comment:
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
388v...Leave a comment:
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
Yes sir, I left the probe on and turned on the tv. I get no voltage at all on the
-VLED1 or -VLED2Leave a comment:
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
budm,
I get the same reading on the +VLED1 and +VLED2 52.5 when I power it on and drops 33.3v
I get no voltage when I test -VLED1 or -VLED2
Where do I find the LCD panel model number?
I was looking at the same LED strips in your link and I am pretty sure they are the correct ones. I am also looking at a SID LED Lamp and TV Backlight Tester. I hope to start working on more tv's instead of everyone in the family just going out buying new ones all...Leave a comment:
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
budm,
When I test C8107, power on Voltage is 52.5, then it drops to 33.3
Thanks for your help!...Leave a comment:
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
Thanks for all of your replies, I will work on it tonight when I get home and report back.Leave a comment:
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Re: LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
Sorry I forgot to add these. Thanks again for the help....Leave a comment:
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LG 55LF5700-UA.CUSDLH - Black Screen, can see image with flashlight test
Hi,
I have a LG 55LF5700_UA LED tv
The standby light is on, I can see the picture with the flashlight test, and there is no back light. I test the standby power at the power board and there is no power. The 2 Led+ test points are only showing 30.3 V.
I can not find schismatics for this board but is it possible that there is a separate ground for the standby voltage? Thanks
Power Supply Board ((X)PLTVEW401XAT9) Voltages:
1. DIM: 2.33
2. O/F: 3.34
3.PS: 3.36
ON
4.NC 0.00
5. GND
6. GND... -
Re: New Members - please post your introductions here
Hi Everyone,
My name is Jeremy from the USA, i have been repairing computers for years and I am expanding that to flat screens and cell phones. I love to learn new tricks and look forward to learning with this great community. Thanks!Leave a comment:
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