Vizio GV47LFHDTV10A No Picture No Sound Fix

[johnboy1313]

Uses main board 3647-0012-0150

Symptoms:
Powers on, Vizio logo turns from amber to white. No backlight. No picture. No sound. Control buttons stay lit. Will not power off unless unplugged.

Fix:
Replace F3, 1.5A fuse on main board.

I'm not sure what caused the fuse to blow in the first place. I replaced it. It powers on and has been working for a couple hours. I used my meter to see that it draws .98A through the fuse. I have a 3A fuse I can put in its place but I'm not sure if I should. In this instance, can I safely replace the 1.5A fuse with a 3A fuse?

[budm]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

I had same problem just like that on my friend in June, the current draw is OK also. I put in the new fuse (2A (twice the current draw) PICOII fuse), it is still running today, he uses the TV everyday.
http://s807.photobucket.com/user/bud...?sort=3&page=1

[johnboy1313]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

Thanks Bud. I'll see if I can pick up a 2A fuse this afternoon and put it in.

[johnboy1313]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

I didn't have time to get the fuse after work. I have a 3A fuse in my bin. Would that be too much?

[budm]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

That 3x more than running current, I would not do it.

[johnboy1313]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

That's what I figured. I'll stop at the store tomorrow and pick up a 2A fuse tomorrow.

[johnboy1313]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

Bud, before I make the trip across town, I'd like to call and make sure they have the fuse in stock. What type of fuse should I ask for?

[tom66]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

2 amp time delay (or "slow blow") type. Minimum 24VDC rated. You can use SMD 1206 or through hole type.

[tibimakai]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

I had two of these myself, with the same fuse issue.

[johnboy1313]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

I purchased a 2A pico through-hole type fuse and soldered the leads to the pads. I've been using it a lot over the past week and consider it fixed now. Thanks for the help guys. This is probably the most truly useful forum that I belong to. You guys are what make this forum what it is.

[budm]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

Thanks for the feedback.

[tom66]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

Great to hear it's fixed.

[bleed4me]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

Just picked up one of these that have the exact same issue, tested the fuse and sure enough it was bad. I have never ordered a smd fuses before on digikey and was wondering if the link I provided is the correct one you were referring to tom66?

http://www.digikey.com/product-detai...89-1-ND/809343

Appreciate the help....

Or if anyone has a link to the one that is needed you would completely make my day cause now that I look more at this chart the more I feel like the above link is not the right one

[johnboy1313]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

I think this would be better.

http://www.digikey.com/product-detai...66-1-ND/615013

[bleed4me]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

I appreciate the help johnboy 1313, if you have a moment could you explain the ratings of this fuse and what's the 1206 that tom66 was referring. I just want to understand things. Appreciate the help.

[johnboy1313]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

The 1206 is the footprint of the fuse. The one you posted is a lot smaller than the one I linked. Yours would surely work, but would be a lot harder to solder on.

[bleed4me]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

Thank you for that...having the answer is great and all I just like to learn whild I'm here so you explanation is much appreciated.

[freakaftr8]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

Heat and poor build quality I believe is what causes these fuses to blow. Fatigue.

[Nick's Tvs]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

I have fixed about 4 of these sets in the past, and all had the exact same issue. Not sure what causes it to go out but its about as easy as it gets for repairs.

[bleed4me]

Re: Vizio GV47LFHDTV10A No Picture No Sound Fix

I am glad somebody finds this easy, for the life of me I can not get this bloody fuse off!! Any tips or suggestions?...never mind I got it...when one fails use two...