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Vizio e470i-ao won' turn on, power supply board replaced still no picture or sound, led power on indicator light comes on momentarily then goes out?

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The Knight

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Power ON signal voltage should come from the main board to power regulator board. It does not come now. Check for the reason. Probably, the main board will have the fault. Contact any service technician. http://electronicshelponline.blogspot.com/

Posted on Jul 24, 2015

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1answer

My TV; VIZIO, Model # E470i-AO does not have a picture. Sound but not picture.

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
.....
1helpful
1answer

Sound but no picture. Vizio E470i-AO

Sounds like Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.....
0helpful
1answer

Vizio e470i-a0 has a blank screen but has sound.

The led strip is faulty. Normally it's comes with the panel.
If you wish to know bout the Woking of back light LED the check the below added link.
www.electro-medical.blogspot.com
0helpful
1answer

I have a Vizio e470i-ao. Before black screen, it lightly faded across the middle. Is it the LED strips, or the LED driver failing?

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
0helpful
1answer

What is wrong with a tv it has sound but no picture vizio model #E470i-ao

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board
0helpful
1answer

Vizio TV has sound but no picture

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.
0helpful
1answer

How to fix my led screen, it has no picture i have purchase and replace the led driver.

Check and replace the damaged component/s at its main board. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Command voltage to switch ON the LED driver section, should come from the main board's system control section. It do not come now.
1helpful
1answer

I have a Visio model e470i-ao and the screen is blank, what can I do?

The T'Con board to this TV cannot be replaced; as it is an integral part of the display panel. If it is faulty, the panel replacement is the only remedy. Contact any service technician to check up all the voltages are there going to the display panel connector. If any of the voltage is abnormal or absent, this kind of fault can occur.
http://electronicshelponline.blogspot.com/
0helpful
2answers

Vizio e470i-ao no picture just sound what part do i need

Measure all the voltages coming off the power supply board first. Then move to the board that controls the picture. This board has one or two wide flat flexible cables running form it to the bottom of the screen.
TV Parts Universal TV Stands DLP Chips ShopJimmy You can get all the parts you need here.
0helpful
1answer

To fix no video Vizio E470i-A0 TV

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
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Vizio model M65-C1. Power comes on, the Visio logo appears and then disappears, backlighting stays on but the TV does not come on completely...what could be the issue? Vizio model M65-C1. Power Supply Board 715G6887-P02-001-002S ADTE1835A C 8 - Main Board 715G7288-M02-000-005T I thought to dig into my TV and I thought the power supply was bad but it is not. The resistors and capacitors that usually go bad are still functioning. I removed the main board and cleaned it up and flowed it as I have seen on the internet and I am still getting the same problem. My daughter told me the power doesn't come on anymore and it does - but after really going over the TV this is what I have found: 1. When plugging it in for the first time the light comes on for a few seconds and then dims or goes off - on standby. 2. I can either power it on via the remote or by the power button on the back of the TV. 3. When powering on the light on the bottom of the TV comes on for about 4 - 5 seconds and then dims or goes off. 4. The Vizio logo appears for a few seconds and then disappears. There is no picture and obviously no sound because of no picture. 5. The backlighting is on for roughly 30 - 35 seconds and then the TV appears to shut off by itself. 6. I don't see the red or blue light coming on...on the main board. 7. Five seconds later the light at the bottom of the TV comes on and you can repeat No. 3 - 5 above. 8. The TV just keeps cycling as it did before I ran any diagnostics or clean up the main board. 9. The cycle start to finish takes 40 - 45 seconds and did this over 5 minutes before I disconnected it. I had to disconnect because neither the remote or power button would work. Prior to all of these issues my daughter stated it would take roughly 30 minutes for the TV to finally come on and once on it was fine for hours. Eventually after months the TV took 4 hours to finally come on and then nothing except what it is currently doing above. The power supply when on reads as it should - the power supply shows 5 volts - 19 volts etc. as I am running my volt meter across the top of the pins. I am also getting 24 volts where I should. The Main Board was a mess with a white substance in places and something like caked on Pepsi and the two pads holding the main board in place had somewhat fused with the board. It took me an hour to clean all of the sticky residue off. I am perplexed. I don't feel I need a power supply but don't know what the "real" issue is because no one on the internet has had the same issues. What do you feel could be the issue?

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