can anyone tell me how to check these transformers please. this is from the samsung 40in models thanks
[ATTACH]128186[/ATTACH]
[ATTACH]128187[/ATTACH]
[ATTACH]128188[/ATTACH]can anyone tell me how to check these transformers please. this is from the samsung 40in models thanks
[ATTACH]128186[/ATTACH]
[ATTACH]128187[/ATTACH]
[ATTACH]128188[/ATTACH]can anyone tell me how to check these transformers please. this is from the samsung 40in models thanks
[ATTACH]128186[/ATTACH]
[ATTACH]128187[/ATTACH]...
mattstolte
Badcaps Veteran
Last Activity: 05-12-2017, 06:27 PM
Joined: 12-14-2013
Location: massillon ohio
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how do i test this transfomer?
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Re: Help lg 47lw5600 backlight going out
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I will get pics of the bottom of power supply Tmrw thanksRe: Help lg 47lw5600 backlight going out
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I will get pics of the bottom of power supply Tmrw thanks... -
Re: Help lg 47lw5600 backlight going out
Is there anyway to bypass the protection circuit and make it run like it is now? Cause when picture comes up it looks fine. Not lighter anyewherw on pictureLeave a comment:
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Re: Help lg 47lw5600 backlight going out
I also wanna thank you. You and tom have been the lifesavers of this forum. Without you two I dont know how else would be here.Leave a comment:
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Re: Help lg 47lw5600 backlight going out
I have not had many led sets come in my shop. Where the backlight flash with bad led. Usually the bad led I have had come in usually screen does not light up at all. But all other voltages are present so I guess it would have to be leds?Leave a comment:
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Re: Help lg 47lw5600 backlight going out
Budm would we say bad led?Leave a comment:
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Re: Help lg 47lw5600 backlight going out
They all go up to 10v when there on then once backlight goes off they go down
el62-el77
1.8
1.8
6.2
7.8
4.7
3.1
3.5
4.9
5.2
4.7
6.2
4.9
3.9
2.0
2.6
2.3Leave a comment:
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Re: Help lg 47lw5600 backlight going out
bud all the + start at 65v when the backlight is on then after 3 secs the backlight shuts off and the + will all read 35vLeave a comment:
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Re: Help lg 47lw5600 backlight going out
yes and I just checked 1 of the pins going to the leds, starts up at 65v drops down to 35 when shuts offLeave a comment:
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Help lg 47lw5600 backlight going out
[ATTACH]124534[/ATTACH]got this set when I power on backlight will come on then after a few sec. backlight shuts off but power is still on. I have all proper voltages but the last 24v where is says pwr on is only 3.5 so im not sure if its suppose to be 24 or not?... -
Re: Vizio E470VL NO Backlight help
I recently bought a new bk precision esr/dcr meter and I found 2 caps on the main that are shorted and high esr. The metal can smd caps. I'm going to try to replace them. I have never changed out these type of caps. Any hints for switching these type...Leave a comment:
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Re: Vizio E470VL NO Backlight help
bud where can I get diagram for this so I can check components 3647-0292-0150 even if I have to pay somewhere for it it fine, im sick if swapping boards I need to learn component repairLeave a comment:
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Re: Vizio E470VL NO Backlight help
Now is there a certain component on that main board that is responsible for this that I can change...Leave a comment:
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Re: Vizio E470VL NO Backlight help
So I'm kind of confused. I know the main sends these signals to the psu to turn on. I have some boltages but not all. So is main bad? Or is main sending its signal but power supply is not producing enough voltage?Leave a comment:
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Re: Vizio E470VL NO Backlight help
Power supply or main board fault?...Leave a comment:
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Vizio E470VL NO Backlight help
ok got this tv and at first backlight would come on then shut off, now I cant get backlight to come on, but tv will power up just no backlight. atfirst I thought it was bad power supply now im not sure
I have my
5v standby
12v
ps on is 2.2
I on/off .75v[ATTACH]
lamp 0
dim goes from 3-1.15v
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Re: what componets are in charge of 5v standby
I was wondering just in general for all lcd tv power supplies what components are in charge of standby voltagesLeave a comment:
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what componets are in charge of 5v standby
I'm dealing with a vizio power supply that has no standby voltage. I'm trying to figure out what components control standby voltage -
anybody know how to make adjustable power supply
Would like to make one about 0-60v and 0-5a -
what controls 24v backlight on this power supply?
I have no lamp voltage on this and wondering any idea what controls it? vizio 0500-0407-0700[ATTACH]122626[/ATTACH]
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[ATTACH]122628[/ATTACH]I have no lamp voltage on this and wondering any idea what controls it? vizio 0500-0407-0700[ATTACH]122626[/ATTACH]
[ATTACH]122627[/ATTACH]
[ATTACH]122628[/ATTACH]I have no lamp voltage on this and wondering any idea what controls it? vizio 0500-0407-0700[ATTACH]122626[/ATTACH]
[ATTACH]122627[/ATTACH]
[ATTACH]122628[/ATTACH]...
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