Re: TCL 55s405 no backlight
As long as a universal remote has a "menu" button it should work for your purposes. I found that finding the network helped a lot to getting my Vizio remote up & running again, but there was no "menu" button on the TV. Using an alternate remote "menu" button got the TV remote working again.
motterpaul
Member
Last Activity: 03-14-2023, 03:10 PM
Joined: 02-29-2020
Location: Encinitas
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Re: Samsung UE46F7000ST Wont come on
The menu button on friend's remote did not work on your TV?
I just a similar problem and I found a "universal remote" that had a menu button. My TV would not start up because I couldn't set up the wifi, etc. Once I got into the menu everything worked great. Using a universal remote was the trick. You can buy them at the Dollar Store for almost nothing.Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
YESSSS!!!!
... it is finally all working. The trick - if you cannot get the remote or a smart access app to work is....
Get a cheap universal remote and access the MENU option. Then make sure then the network is set up. That is all I did, and now even the remote works. I am a 100% happy guy with a brand new TV.
I owe you a world of thanks - is there anything they do around here to award people who really help?Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
Yes, but the one I got was matched to my model number AND there was a note that said it was proven to work with all E70-E3s....Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
UPDATE: I effed around with my cable TV remote and actually got access to the menu on the TV, and I can watch my cable TV now. I can access the menu, and it says it is connected to the network.
So, now I don't know if it is the remote or the IR on the TV. If it was the IR on the TV, would the cable remote work, or do Vizio remotes connect a different way from other remotes?Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
The Good News, I put in a new mainboard and all the LEDs work and it is a beautiful picture. The bad news, now the remote does not work - also, I cannot pair the TV to my phone app. I have no way to control it.
I get the setup screen on the TV that has the smart app highlighted, but I cannot pair the smart app to the TV. I get the screen on my phone that says "enter the pin shown on the TV" but there is no PIN on the TV. I tried the original PIN (I had it written down) and that also does not work.
...Last edited by motterpaul; 03-05-2020, 07:46 PM.Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
Well, I did not understand before, but I understand what you are saying. TVs, it's all new to me
Everything you say here is also what I perceived to be the case. I just got on of those cool LED testers, and yes, the + side is for both sides of the connected strip, while 1 negative is for each of the 1/2-strips.
What I did not know before now is that one bad LED will take out an entire strip. When I saw YouTubes of guys replacing LEDs I thought they just had one dark spot in the backlight...Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
I know from my guitar effects that LEDs will blow out (easily) if they get too much current, hence you add a CLR (current limiting resistor) to the voltage feeding an LED. The 5.1k gave me exactly 57v DC, which is pretty close to the actual voltage the board gives as far as I know (maybe it is closer to 59)
I wondered if you were familiar with my TV or if you just made an educated guess on the resistor.
Do you know the voltage of my individual LEDs (is it 3.3?), and also for my full strips? (there are 12 half-strips,...Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
I will try this again, to the best of my memory from yesterday switching it did not connect all four pins together.
Where is the U1 IC located (which board, and is it surface mount or bigger?)
Also, how does one know what value resistor to use for the connection I made (5.1k) - does it vary by the TV and standby voltage?...Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
by the way, the switch was sending voltage thru (IIRC about 2.2v) no matter what I did with it. All four points were not shorted (IIRC only one was ground) - so I could not determine either way from those tests. I will try to find another way to check that.
As far as knowing what PS_on meant, I guess I just figured the PSB fed the mainboard, and so the PSB it had to be the problem if there was no voltage there. Now I know better(I am used to analog circuits)Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
Thanks again for your help! I knew the voltages were what was printed, I just didn't know what all the abbreviations meant. I happened to catch a video that explained PS-On just before you said the same thing here an hour ago.
Anyway - I tried testing the button, and nothing seems to change when I push it. If I knew a place to check it on the mainboard I could try that. There doesn't seem to be a lot of info out there, though. A replacement is only $10.
I hate to admit that I did not understand...Last edited by motterpaul; 03-01-2020, 05:30 PM.Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
Yeah - 57v - it works. So, not being a TV expert, I guess the easiest move now is to just get a new Mainboard?
I think I should replace the power button assembly, too. I can't find a way to test it.Last edited by motterpaul; 03-01-2020, 03:51 PM.Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
I hate to sound dumb, but I have to... I did not know what those voltage abbreviations stand for - but I do now. I do have full sets of resistors so I will get one now and see what happens. Thanks for checking back.Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
Based on no further replies, should I assume my friend R_J is correct and it is probably the mainboard?
All the research I did kept me thinking it was the Power supply board, but I am not an expert.Leave a comment:
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Re: New Members - please post your introductions here
New member - posted for help with Vizio E70-E3 - under "TVs and Video"Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
OK - I have the change what I said - after trying a reset - etc. Now the PS_on says[B][SIZE="4"] -3.1 mv[/SIZE][/B]. Essentially zero. Sometimes if I hit the power switch it gets there from a different direction, but it always ends up at -3.1 mv.
[B]Here is another update, after a reset I now have [SIZE="5"]AC-DET = 3.94v[/SIZE][/B]
last update: [B]But if I unplug the mainboard I get [SIZE="5"]AC-DET = 4.43v[/SIZE][/B]
Top post has not been updated on last up...Last edited by motterpaul; 03-01-2020, 11:37 AM.Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
Sorry, meant to say it does NOT changeLeave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
Good question - no, it does NOT change (I just tested it). I was just going to try a 60-second reset (power out, button down 60 sec, power back in)...Last edited by motterpaul; 03-01-2020, 10:40 AM.Leave a comment:
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Re: Vizio E70-E3 will not power up, no LED V.
[B]It is stuck at -3.1 mv[/B] (I just fixed my post above).
Also - I have FIXED the power button issue now, it is not stuck in place. But it might have been pushed down when we first tried to repower the TV, and maybe put it in protection mode (?). One of my pics shows the actual power button now without the mashed button on top.
When we tried to turn on the TV nothing happened, though, no LED, no pops, no sounds, it was just dead. And I have tried some resets but it still won't power up. Maybe...Last edited by motterpaul; 03-01-2020, 11:05 AM.Leave a comment:
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Vizio E70-E3 will not power up, no LED V.
Preamble: (skip if TL/DR)
This project started with a complete LED strips replacement because 6 of the 12 total strips were dim.
We replaced all 12 strips - then we put the TV back together and it will not turn on. As I said, I have standby voltage but no LED voltage anywhere in the TV.
I noticed the Power On button on the back of the TV was mashed down by the back cover, now one side of the button has broken off, It's just a piece of plastic that presses a metal button. All I could do was take that button off all-together and will use a pencil eraser if I ever...Last edited by motterpaul; 03-01-2020, 11:20 AM.
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