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dbier63
Joined: 23 Jul 2014
Posts: 11
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| Posted: Wed Jul 23, 2014 1:00 am Post subject: Vizio 550M black screen after 1 second still has sound |
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I have a Vizio VF550M that goes to black after about 1 second but continues to have sound. I have changed PS board, Tcon board,main board and both inverter boards. All boards still have the same problem but doesn't mean all there boards I received were good. Anyway help would be appreciated.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Jul 23, 2014 1:02 am Post subject: |
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Assuming that this is a fluorescent tube unit, one of the tubes is most likely bad. I've seen this a lot in computer monitors. There's no cure for this, as the tubes aren't available. Throw the set out.
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dbier63
Joined: 23 Jul 2014
Posts: 11
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| Posted: Wed Jul 23, 2014 1:05 am Post subject: |
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Really one tube can ruin the whole set?
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dbier63
Joined: 23 Jul 2014
Posts: 11
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| Posted: Wed Jul 23, 2014 1:07 am Post subject: |
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So one tube will cause all of the tubes to go out?
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Jul 23, 2014 1:09 am Post subject: |
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Yes. they also have current sensing circuits, so you can't unplug the defective one and make the rest work. I've tried..
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dbier63
Joined: 23 Jul 2014
Posts: 11
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| Posted: Wed Jul 23, 2014 2:43 am Post subject: |
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Ok I'll strip the components and trash the rest. Thanks so much!
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Wed Jul 23, 2014 12:20 pm Post subject: |
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Take it to your local goodwill if you live in the USA, they should recycle electronics for free, ours here does, I've ditched all kinds of useless crap to them, everything from small computers to big ass multifunction copying systems.
Oh, they hate it if someone says they'll take it from you while you're trying to drop it off...
I wonder why 
Also... The set could be worth something to someone who needs a good panel, someone may have a cracked panel, and good fluorescent tubes in their set. A bit of messing around with it and one of 2 sets would be fixable from your bad set.
Nothing is truly junk.... 
_________________
When I'm asking for a Model number, that doesn't mean I'm asking for a nude photo with your number on it
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Jhenry
Joined: 22 Apr 2015
Posts: 1
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