Re: LG 65UH7650 (4k UHD)
OK, there is no picture present. When I disconnected the tcon one at a time. The right side flashed real bright like the tv was on, while the left side did nothing.
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Re: LG 65UH7650 (4k UHD)
OK, just made a series and the back lights did turn on....
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Re: LG 65UH7650 (4k UHD)
budm, Yes, sorry you are correct. It is mV....
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Re: LG 65UH7650 (4k UHD)
Drv_on reads 56.5v, dim1 and dim2 reads 3.3v.Last edited by ngsss; 09-12-2018, 07:52 PM.
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Re: LG 65UH7650 (4k UHD)
When the tv is “on” the pwr_on reads 3.2v, all the 13.2 read 13.2v.
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Re: LG 65UH7650 (4k UHD)
So you both think the main board could be the issue? Is that what would be recommended to get?...
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Re: LG 65UH7650 (4k UHD)
budm:
Yes, that is the power supply I have.
I removed the cable and it measured 9.8v-10v, in all (5) of the 13.2v ports
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Re: LG 65UH7650 (4k UHD)
Vsync/s[n
gnd/sclk
drv_on/p-dim1
gnd/gnd
13.2v/13.2v
13.2v/13.2v
gnd/13.2v
pwr_on/p-dim2
gnd/gnd
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Re: LG 65UH7650 (4k UHD)
Thank you for the info! Here is what I have for volts with the tv plugged in not turned on. (I have a standby light showing on tv)
PIN#s ---DC volts reading
17/18 --- 0v / .1v
15/16----0v / .1v
13/14----2v / 0v
11/12----0v / 0v
9/10-----8.3 to 9.5v / 8.3 to 9.5v
7/8------8.3 to 9.3v /8.3 to 9.5v
5/6------0v / 8.3 to 9.5v
3/4------0v /0v
1/2------0v / 0v
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LG 65UH7650 (4k UHD)
I am new, so hopefully I don't sound like an idiot. I am looking for some help diagnosing this tv. I don't have picture but have a standby light on the front of tv. When I turn the power button on the back light does not come on. I cant seem to figure out where the standby is on the power supply to test volts. Attached is a picture of what im dealing with and the volts I am reading for each one. First Set of numbers is when tv OFF second set is when its ON.
TV WAS IN A POWER SURGE WHEN THIS OCCURED
OFF / ON
0v / 2.2v
0v / 6.4v
2v / 55.9v
...Last edited by ngsss; 09-10-2018, 06:36 PM.
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Re: New Members - please post your introductions here
Thanks for the add! Hoping to get a problem figured out with this community's help.
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