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TVs

Samsung le32c450e1w does not turn on

Francisco Rodriguez
hace 5 años
hace 5 años
Hello help I have a le32c450e1w not turn on nor the stanby pilot voltages at source 0. I disconnect the t com and nothing all the same. I disconnect the keypad and nothing alike. I disconnect the inverter and all equal 0 I go on all outputs at the source. I disconnect the main and all the voltages appear in the source even turn on the invert with the backlight. All voltages A5v. B5v. 13 volt 24 volt. I decide to change the main thinking that there is an excess consumption of the micro and the source is protected. But when changing the main. The tv stays the same. Only I have the voltage A5volt (with the difference of the previous main) but it does not turn on. Not even the Stanby pilot. Where do I look? What can i watch? Someone who has an idea. Or the same thing happened? Thanks HELP
Mathias Gael
hace 5 años
hace 5 años
Last week the same thing happened to me with a Samsung TV itself fails, in my case I had problems with the 5v, without connecting the source to the mainboard there are 5v, but when they connect they disappear or diminish, I changed the filters of the 5v stanby and solved, I hope it helps you luck.
TobíasTv
TobíasTv
13.721
hace 5 años

Welcome matias, I wanted to get there ... good assistance, my luck is like for you;)

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Francisco Rodriguez
hace 5 años

Thanks for your answer. In my case I have the 5v marked the pin that puts A5v with the main connected. If I disconnect the main, all voltages appear. The main does not return stby voltage or even turn on the Stby LED

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TobíasTv
TobíasTv
13.721
hace 5 años
hace 5 años
Hello Francisco, how complicated your case, but at the same time interesting, I leave you a tip that I always post to determine if it is the main or the source, but first if you have power in the receiver of the remote, you will have a short there ... well, I leave that concern, the tip goes When you connect the TV the source delivers a standby voltage to power the main, when you give the power the main returns the power on level to the source and it delivers the main tensions Three cases 1 - That the source delivers the standby and the main does not return the power on - main malo 2 - That the source does not deliver tension - bad source or short main 3 - That the main return the power on and the source does not deliver the tensions - bad source What is your case? If you answer, I give you my Like of Luck for solutions but I hope for yours;) If you ask a question in the forum, always answer it, the colleagues who answer you spend your time and knowledge with the will to help you, if you are grateful, choose the best answer and give a Like to those who participated. Thank you for collaborating in the forum and Success with your repair
Francisco Rodriguez
hace 5 años

Thanks for answering. In the touch receiver go. I have 3.3 volt. I don't know if it's insufficient. I disconnect this connector (from the receiver go button) and I still have 3.3 volt. The source delivers to the main 5vol by the pin indicated as A5v. In the rest of pin 0 volt.

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Francisco Rodriguez
hace 5 años

It is normal to disconnect the main source. Will the source be operated without any order from Stby?

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TobíasTv
TobíasTv
13.721
hace 5 años

hello, 3.3V on the receiver of the remote is fine, the most modern samsung when you disconnect the main the backlight starts, mass that the main has a power on and bl on ground, when you disconnect it they go to high level, it is great for try

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TobíasTv
TobíasTv
13.721
hace 5 años

when you disconnect the main, the tensions appear all? the 12 volts?
If your main standby voltage reaches you and since you plug the TV it does not return a moment power on or when you press power, it is dead

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Francisco Rodriguez
hace 5 años

When I disconnect the main, all the voltages appear, when connecting the main there is only 5 volt voltage at the point indicated as A5v.but it does not take care of buttons or the Stby LED

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Francisco Rodriguez
hace 5 años

If I disconnect the receiver keypad go. The main board should work?

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TobíasTv
TobíasTv
13.721
hace 5 años

if the main power on does not come out you will have to replace it
The answer to your last comment is no

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Francisco Rodriguez
hace 5 años

It is a task. Well, this main is the second. And they assured me that they tested it and it worked. Hence my frustration with the happy breakdown

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TobíasTv
TobíasTv
13.721
hace 5 años

I am very frankly sorry, particularly when the main one is bad and I cannot repair it, I refer it to the official Service and I get the problem out;)

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Francisco Rodriguez
hace 5 años

Hello again. I have some doubts. This tv has the tcom attached to the panel. If I disconnect the tcom from the main. The tv should turn on? (stanby backlight etc etc?) Or put another way. If the tcom is disconnected from the main. Should the TV turn on?

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TobíasTv
TobíasTv
13.721
hace 5 años

Exactly, you're right, without the t-with the TV turn on without image with audio

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TobíasTv
TobíasTv
13.721
hace 5 años

I throw a center, lei
"The main does not return stby voltage or even turn on the Stby LED"
Do you have tension in the receiver of the remote? what is expected is 3.3 or 5 volts on two of its pins and one mass

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Francisco Rodriguez
hace 5 años

In the keypad that is tactile. With the receiver go there is voltage of 3 .3 volt on 3 of its pins and ground

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TobíasTv
TobíasTv
13.721
hace 5 años

that indicates that the micro is powered ... the main is bad ... could it be some fuse smd of the main or that some sub source of the cpu doesn't work ... did you look for a diagram? I'm going to look

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Francisco Rodriguez
hace 5 años

Since it is the 2nd main I try and the same symptoms as the first. Jay any chance that the tcom has broken the main leaving it without stanby and nothing?

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TobíasTv
TobíasTv
13.721
hace 5 años

if you disconnect the t-with the arerancaria TV without image obviously, if it is a samsung led start the source and the backlight only by disconnecting the main from the source

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Francisco Rodriguez
hace 5 años

All that does. This is not led. Take tubes in the backlight

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Francisco Rodriguez
hace 5 años
hace 5 años
Solved Main board defective. It has been changed and everything perfect. Thank you all. The bewilderment was that I picked up a main with such bad luck that I had the same symptom and breakdown as the one with the TV. It's bad luck that only happens to me. Thank you all
TobíasTv
TobíasTv
13.721
hace 5 años

they are things that happen, maybe it is a typical model failure

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TobíasTv
TobíasTv
13.721
hace 5 años

it's like

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