Re: LG 42PW450T TV won't turn on
Images attached thanks....
stephenc
Member
Last Activity: 12-07-2016, 04:10 AM
Joined: 10-15-2015
Location: N.Ireland
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Re: LG 42PW450T TV won't turn on
I'm afraid there were no voltages on a label on the back panel but I have taken some readings myself.
The attached images shows what I think is the main power board with markings 1 - 5 in red type and the readings with the negative probe earthed against the frame are -
1 There is 135V AC on either side of this fuse or resister (I don't know what it is)
2 There is 135V AC on either side of this fuse or resister (I don't know what it is)
3 There is 238V AC on either side of this fuse or resister (I don't...Leave a comment:
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Re: LG 42PW450T TV won't turn on
Yes, I've a fair idea. I'll try to get hold off it tomorrow and take some readings....Leave a comment:
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Re: LG 42PW450T TV won't turn on
I've removed the back of the TV and hopefully attached some images....Leave a comment:
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Re: LG 42PW450T TV won't turn on
Thanks for help and apologies, I don't even know where to start....Leave a comment:
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Re: LG 42PW450T TV won't turn on
Please do not add any more to this thread. You're the sort of idiot that puts newbies off asking questions on forums. Instead, you might like to go and throw abuse at others as I'm guessing you're the sort of person who does that frequently!...Leave a comment:
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LG 42PW450T TV won't turn on
I have a LG 42PW450T - ZA.BEKLLJP which suddenly would not switch on.
The remote red flashing light works fine indicating that there is power but the remote will not switch it on and the touch power button does not make any difference.
I've no idea where or what to check next and would really appreciate some help please. -
Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
I was very concerned about soldering them in but did so as you recommended, but when it made no difference I desoldered them, cut them clean & insulated the terminal ends.Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Lighting all appears to be working?Leave a comment:
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SORTED Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Removed the board and soldered the 2 cables on the back as budm suggested; no difference at all and incidentally no voltage either.
Started playing about with board moving pins etc and noticed that one the big capacitors (shown in attached image) moved more freely than the rest. Removed the board again and wiggled it about only to find the pin moving through the solder. Got it soldered up and it's now working fine.
Thanks to all especially budm. I never would have sorted...Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
I've already done that a couple of times but it's too hard to trace the printed circuit back and I'm unable to find it. I resoldered a few connections around the area but it didn't help.Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Heated the soldering iron & then pulled connector off only to discover that I cannot solder directly onto pin as otherwise the connector would be permanent.
Instead I stripped back a few millimeters & soldered the end to give it rigidity, pushed it onto block of switched it on. Unfortunately, still nothing....Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Ok, will hopefully get them soldered on tonight if I can get some good lighting..Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Hopefully image now attached...Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Unfortunately Shopjimmy is located in Burnsville, Minnesota, United States and I am in Belfast, N.Ireland. I can't even gain access to the site due to my IP address.
No one else has worked on the set and there are 2 empty spaces in the connector. I just assumed that they were for perhaps for extra TV features which my TV didn't have. Also, I assumed that because when I hit the TV a sharp knock and it came on that those wires were unrelated. I'll try to get a clearer picture posted....Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
There is both a red and a black wire suspended neither of which look as if they have ever been connected.
The part number looks like B791B330585010904 and I tried to attach an image of it in an earlier post....Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Anybody any thoughts on the next step please?Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
OK thanks budm, I've now taken another 2 sets of readings -
1 With the power connected but the TV in the fault state.
1 AOC - 4.5
2 ON/OFF - 0.04
3 ST 5V - 4.5
4 GND - 0
5 I-C - 0.03
6 ERR - 0
7 I-B - 0
8 ST 5V - 4.5
9 GND - 0
10 DIM - 0
11 6V - 0.01
12 GND - 0
13 ???? - 0.04
1 19V - 0
2 19V - 0
3 GND - 0
4 GND - 0
5 6V - 0.1
6 GND - 0
7...Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Just to follow up on earlier posts -
1 There definitely seems to be a bad connection somewhere as I can easily get it to come on and off by a sharp tap on the worktop.
2 When it comes on, there is 3.4V from Pin 7
Should I assume it is definitely in the power board and order a new one??Leave a comment:
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Re: LG 32LC46 Model 32LC46-ZC not turning on or showing any sign of life.
Apologies for confusion. I have now attached an image of the pins for the 2 connector blocks. Their details are below -
1 AOC - 5.09
2 ON/OFF - 0
3 ST 5V - 5.09
4 GND - 0
5 I-C - 0
6 ERR - 0
7 I-B - 0
8 ST 5V - 5.09
9 GND - 0
10 DIM - 0
11 6V - 6.08
12 GND - 0
13 ???? - 0
1 19V - 18.47
2 19V - 18.44
3 GND - 0
4 GND - 0
5 6V - 5.95
6 GND - 0
7 3.4 - 0...Leave a comment:
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