Hi hope that Tom66 can help with this problem
Tv wont come out of standby
No voltage at ac detect
Tv wont come out of standby
No voltage at ac detect
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Re: lg50pc1da
Post some clear pictures for him -
Re: lg50pc1da
Moved from FAQ.
There are other experts besides tom66. Don't get me wrong, he's all 7 letters of awesome, but anybody who has a clue is welcome to toss $0.02... even newbies have soled problems the "regulars" have had no idea (alternate perspective?).
As P4 said, could you post some pictures?sigpic
(Insert witty quote here)Comment
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Re: lg50pc1da
Once you get the pictures posted, we can give you a test procedure to try to force the panel on. This can give some useful diagnostic information, based on how it behaves.Comment
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Re: lg50pc1da
SORRY Guy's may take some pictures tomorrow, but i know Tom66 has
cured this problemLast edited by joe.90; 03-28-2013, 01:27 PM.Comment
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Re: lg50pc1da
I have cured it before on the 42PC1D; but the power supplies are completely different.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: lg50pc1da
Sorry mixed up two previous theads of yours,this video you made a link to is the exact problem on my tv
http://www.youtube.com/watch?v=hOADH...ature=youtu.be
Yes the power supplies are different my mistake
Last edited by joe.90; 03-28-2013, 03:22 PM.Comment
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Re: lg50pc1da
Was a bad Y-sus and Y-buffer on that model in the end, it was determined uneconomical to repair. I don't have a brain the size of a planet (unlike Marvin) so I can't remember the places to make the modification. How's about a picture of your PSU so I can see where to bridge?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: lg50pc1da
Thanks for the help will take pictures ASAP
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This is my first attempt at troubleshooting a board like this, I know I could just buy a new board but I'm curious to figure out how this works. I've been testing different components in the evenings this week and I think the problem is with the IC failing to start up for some reason. When the board is plugged in there is no standby voltage.
Then today it randomly sprung to life like a zombie but shortly died thereafter. I have no idea why it would have done that and its the first time I've seen it running. I discharged capacitors on the board last night, then it was sitting today.... -
Hi. I got a Vizio with no power or standby, and won't turn on with remote or button. I checked the voltages on the connector and all read 0.00V or nearly 0(0.050 ON/OFF pin). None of the pins are labeled STB for standby although I do see some 5V pins. Other than the obvious standby led, which isn't coming on, is there a way to check for standby voltage on this PS. I'm trying to see if my problem is the PS or mainboard. Some Vizios I have fixed with no standby led me to think it was the PS but it turned out being the mainboard. Any experience with this set would be greatly appreciated. -
Hi all.
I started a thread while back regarding TV power supply standby circuitry as it is something I am not quite on top of.
SMPS theory and function is becoming more familiar, however the standby part is still a bit of a mystery.
Anyway, a friend has this TV with the above mentioned power supply board which has no standby voltage, nor any other voltages leaving the board.
The mains AC comes in fine, gets filtered and rectified with power is on the main filter cap as well as the transformer and drain pins of the ICE3B0665J, but that's it.
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Hello forum. I've recently been given a Yamaha TSX 120 DAB radio and ipod dock. Its working well however when put on standby its using 6.3 watts. The manual states less than 1 watt on standby. I measured this with a plug in monitor which seems accurate with other items. In use it uses around 7.5 watts. Firstly has anyone who owns a similar radio also got a plug in monitor to check if this is normal with this unit? In the first half a second the monitor shows 0.3 watts which I suspect is what it should use but something is switching it to be almost fully powered. I've searched the manual for eco...03-01-2024, 07:25 AM -
Hello,
I am trying to re-purpose this power supply that I saved years ago from a tv with a cracked screen for a monitor but that is not really that relevent at the moment. I do not recall which tv but a google search looks like it is from Wharfedale LTF37K1.
You may notice I made some alterations moving some components to the top and some wires which are from a 5v regulator I fitted to the 12v output as the monitor requires 5v. The standby was already at fault from the beginning, it has nothing to do with the alterations...
Years ago it had some bulging caps...
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