Question about Vizio GV47LF Television

5 Answers

I have a Vizio GV47L that made a pop sound and now has no picture or sound. If I unplug it, then plug it back in, the lights light up on the bottom and when I press the power button, the buttons iluminate, but do not function. From what I've read, it seems like either the power board or main board, but I'm not sure how to determine which might be faulty. Does anyone know a simple way to determine which might be bad. I'm prepared to just replace the whole part, but want to try to avoid ordering the wrong one. Thanks for any assistance you can provide.

Posted by on

5 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

Same problem on our GV47L-FHDTV10A was caused by a VERY small fuse on the mainboard. On top right of mainboard there are 3 small fuses they are white with gold ends. The left one (f1) is 1.5 amp we just soldered one from radio shack on it to bypass the fuse and it is working like a champ now.

Posted on May 05, 2010

  • 5 more comments 
  • tigerdad Oct 31, 2010

    Wow... I thought there was no way I could fix this myself. I had the same problem as originally reported. I took kountryb0y's advice and checked the fuses and sure enough f1 was bad. I did exactly what he did, went to radio shack and got a fuse and by passed it. It works great now! First time I ever soldered anything. If I can do it anyone can do it.

  • cdillinger27 Nov 07, 2010

    Encountered the same exact problem last night. Was watching TV - heard a pop - then no picture. Lower light on tv was on but panel controls did not work. Unplugged/replugged - able to turn on tv with panel control, but no picture, and once turned on, panel control failed to work. opended up TV - ohmed across F1, F2 and F3 - F3 open. replaced with small tube ceramic fuse from radio shack - just soldered across existing bad component. Back in business. thanks for the posts - saved me some $. total cost to fix - $0.97.

  • r_to_the_k Dec 09, 2010

    Roger that! Mine just went out and I did the fuse bypass trick and my 47" is back up with no issues so far. The thing that took me the longest was the drive to Radio Shack...

  • Brady Blake Mar 12, 2011

    What do you mean you "soldered" it? Described what that entails please. Thanks.

  • id15793 May 21, 2011

    Could someone please post a link to exactly which fuse I should buy? Thanks so much!

  • id15793 May 21, 2011

    And also maybe send a photo of what it looks like? I think there was another thread where someone had a photo they could send. I would so appreciate it. id15793@yahoo.com

  • id15793 May 21, 2011

    Can someone please walk me through the process of replacing the fuse. I am trying to remove the backing first. Do I simply remove all the screws and it will pop off easily? I'm kind of scared to break it even more.... Also, do you keep the TV standing upright for the repair?

×

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

Same problem but in my case it was fuse f3 on mainboard. soldered in new external fuse and problem solved.

Posted on May 23, 2010

  • r_to_the_k Dec 09, 2010

    Same here! Fuse Bypass solution works like a champ!!! I looked on Craigslist to see if people were selling thir sets due to the same reason... and what'dya know!!!!! Gonna risk it, but it for dirt cheap and see if I can fix it...

×

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

I had the same problem. I replaced the Main Board and it fixed the problem! It was not difficult to do at all as I am a novice at best. The main board has connections to audio, back light power supply and front control panel. It has the HDMI, Composite connections, etc attached as well. Total repair time including putting the back on was about 30-40 min. I obtained the part the part from VIZPARTS.COM and it was about $200 including 2 day air shipping. Good Luck!

Posted on Dec 24, 2009

  • r_to_the_k Dec 09, 2010

    Fixed my 47" GV47L for $7.18... Did the F3 Fuse bypass solution, and it worked like a champ!!! No problems since! The part that took the longest was the drive to Radio Shack!!!

  • id15793 May 21, 2011

    Can someone please walk me through the process of replacing the fuse. I am trying to remove the backing first. Do I simply remove all the screws and it will pop off easily? I'm kind of scared to break it even more.... Also, do you keep the TV standing upright for the repair?

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 128 Answers

Most likely the pop sound was a capacitor exploding on the power supply board. There is the risk that the power supply damaged the main board when it failed. The best solution would be just to replace the failed cap and see if the TV will start normally.

Posted on Oct 07, 2009

  • r_to_the_k Dec 09, 2010

    Fixed my 47" GV47L for $7.18... Did the F3 Fuse bypass solution, and it worked like a champ!!! No problems since! The part that took the longest was the drive to Radio Shack!!!

×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Alright, First thank you for the hint... but I bet that even though you have fixed your LCD with this F3 Fuse, you are still not at ease of why changing this fuse fixed your LCD TV.. And wonder if there something else going wrong with the board..... At least that was in my mind last few days :-) so I found the answer for this... and Surely the F3 replacement is the correct answer.... but there is more to it....

What I did was to insert an AMP meter in place of the bad fuse,,, and turn it on.... I did this to prove one of the theories below:
1-If the Current meter shows more than 1.5A current ==> bad component exists and will cause new fuse to burn...==>more debug or buy new board..
2-If the current meter show less than 1.5A, ==>bad fuse and Why???

Surprisingly, the meter shows 1.1A at power on, and settles down at 0.95A...
From the paper standpoint, this fuse should be able to handle the current... but when you look into the application and the fuse spec, I don't think it makes sense.
-first, this is fuse from Little fuse 451_453 series.
http://www.littelfuse.com/data/en/Data_Sheets/Littelfuse_Fuse_451_453.pdf
According to spec and in general, the fuse will have this spec "Derating depicted in this curve is in addition to the standard derating of 25% for continuous operation."
-If you are carefully look at the note at the power connection to this fuse (Mine is J7 for GV47L FHDTV10A), it shows that F3 is 5VSB (standby voltage)... and F2, F1 are 5V and 12V... (only power on when TV is on)
Assume, you plug your TV in the wall all the time, this voltage will be present to power all the circuits such as infrared, remote,,,,.. that mean it will eventually degrade by 25% so the fuse will become 1.1A fuse instead of 1.5A fuse...
Also from the spec, the fuse will also decrease with temperature... And of course, I don't see any fan in system and only the venting holes....
If you install your TV in place that can block the venting or insufficient venting, the temperature inside the unit get warmer... (actually, you can feel it too, don't you when you stand behind the TV)....
Assume that the temperature will degrade the fuse by another 10%, now the fuse is effectively 1A fuse... If the board draws 1A fuse and you have 1A fuse... it will eventually burn....
This also explains why everyone in this forum or from the internet only get F3 fuse burn and not F1 or F2...

So are you safe with the same exact fuse you replace??? I am not sure.... but I think it is much safer if you install a 2A fuse in there instead of the same fuse... With 2A fuse, you will have some head room with all the degrading due to continuous operation and temperature factored in.
Good luck all

Posted on Jun 23, 2012

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Have a Vizio TV: GV47L FHDTV10A. I turn on the TV, has sound but no picture. Did flashlight test & I CAN see an image when I shine the flashlight on the TV. Videos suggest an inverter slave. Any help?


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.

Nov 06, 2016 | Vizio Televison & Video

1 Answer

VIZIO GALLEVIA modle VIZIO GV47L FHDTV10A


Most plasma TV's have secoundary power boards, witch can be the cause, now I would try if I where you is to unplug it and let it set a hour or two, if that did not work then the tv will need to be looked at locally. The cause can be a bad power board inside the TV witch is a major cause why a Tv would have a power light put no function at all.

Hope this helps if you have any questions as to what parts to buy www.partstore.com is a best resource.

Oct 18, 2011 | LG 42PG20 42 in. Plasma HDTV

1 Answer

My vizio gv47l went black. where do i start


Search on blown fuses for gv47l. There are three fuses that you can check (open the back of the TV) and if one is mad you can jumper it with another fuse. I did this nad it fixed my gv47l

Dec 03, 2010 | Vizio GV47LF Television

2 Answers

Vizio GV47L not turning on after a pop noise


screen went black due to power supply failure. check also inverter.

May 30, 2009 | Vizio GV47LF Television

2 Answers

Vizio GV47L screen went black and is now unresponsive


Could be the power supply gone bad.
No easy solution I'm afraid.

May 20, 2009 | LG 47LC7DF 47 in. LCD HDTV

2 Answers

Vizio GV47L not turning on after a pop noise


check your power board, most likely that's the part that is causing the problem.

Feb 09, 2009 | Vizio GV47LF Television

1 Answer

Vizio GV47L FHDTV10A


sounds like a lamp failure.

Dec 03, 2008 | Televison & Video

1 Answer

Big POP no sound no picture


if you could see light orange or green is has power is probably teh Y and Z board

Aug 22, 2008 | Vizio P50HDTV10A 50 in. Plasma HDTV

Not finding what you are looking for?
Vizio GV47LF Television Logo

2,107 people viewed this question

Ask a Question

Usually answered in minutes!

Top Vizio Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74136 Answers

CoppellTVRepair.com

Level 3 Expert

749 Answers

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Are you a Vizio Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...