Re: Vizio E470VA backlight no pic, burned trace on TCON
For completeness here's the
barcode from power supply board: [url]http://w0ep.us/vizioE470VArepair/GEDC0359.JPG[/url]
barcode from the inverter board:
[url]http://w0ep.us/vizioE470VArepair/GEDC0361.JPG[/url]
There are various black sharpie markings on the unit, it looks like someone ticked off as they checked voltages and electrolytic caps. Anything you see in the pics was done by someone else, I have not marked anything.Re: Vizio E470VA backlight no pic, b... on TCON<br />...
symergy
Member
Last Activity: 12-12-2014, 10:47 AM
Joined: 11-09-2014
Location: columbus, MS
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Re: Vizio E470VA backlight no pic, burned trace on TCON
Overall picture of the back of the set (4 boards): [url]http://w0ep.us/vizioE470VArepair/GEDC0347.JPG[/url]
Main board (on the lower right of the set, has all input connectors on it): [url]http://w0ep.us/vizioE470VArepair/GEDC0348.JPG[/url]
The bad fuse was already marked with a sharpie black arrow on the connector on upper left of the board. Same fuse. This TV has been worked on before (?).
Main board - zoom in on white barcode label: [url]http://w0ep.us/vizioE470VArepair/GEDC0351.JPG[/url]...Leave a comment:
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Re: Vizio E470VA backlight no pic, burned trace on TCON
My IC came in today and I did some reconstructive surgery on the TCON board. I think it turned out rather well given the damage.
I got it installed, and no change.
Then I found a smt fuse on the main board, no markings, but it was open. So I took a wild guess (and rummaged through my junkbox) and found a small automotive style 7.5 amp fuse and put that in with some pigtail wires.
I got it all put back together and it blew that fuse. That doesn't sound so good to me. Would the main board...Leave a comment:
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Re: Vizio E470VA backlight no pic, burned trace on TCON
Thanks for the picture, that does look the same.
The other side looks fine. There is a connection through from the burned trace to the missing capacitor which goes to the other side and back and that seems to be intact.
FB4401 ? Capacitors are Cxxx Resistors are Rxxx. What is FBxxx ? I see quite a few FBxxx parts on the main controller board. They are just grey colored smt parts.
Found my answer Ferrite Bead in this thread: [url]https://www.badcaps.net/forum/showthread.php?t=39326[/url]...Last edited by symergy; 11-11-2014, 06:38 AM.Leave a comment:
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Re: Vizio E470VA backlight no pic, burned trace on TCON
I have ordered a replacement for the G5795 IC off of ebay.
Any guesses on the cap or fuse values? .01 uF ?Last edited by symergy; 11-10-2014, 09:42 AM.Leave a comment:
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Re: Vizio E470VA backlight no pic, burned trace on TCON
Close-ups of both ends of the vaporized trace. (poor picture quality, sorry about that.)
On the IC end, I can see through the stereo scope that the IC's ground leg (pin 4) is definitely lifted and detached.
On the connector end, where I think there was a fuse, it is just a crater....Leave a comment:
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Re: Vizio E470VA backlight no pic, burned trace on TCON
Here is a picture of the whole board. It has two ribbons going to the LCD panel over the top of the unit.
I don't see any damage to the connectors or wiring. The large connector goes back to what I think is the main controller board. I don't see any obvious damage there....Leave a comment:
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Re: Vizio E470VA backlight no pic, burned trace on TCON
Additional: the IC at the top of the burnt trace shows some signs of distress also. It is marked M301 G5795.Leave a comment:
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Vizio E470VA backlight no pic, burned trace on TCON
Hi, I am looking at a Vizio E470VA which I purchased cheap from a lady in the hopes that I could get it running again.
It looks like a repaired or remanufactured unit since there are sharpie markings and notes on the boards and chassis. The TCON board metal cover has been snipped off and is gone.
My current situation is that I have a burned trace on the TCon board with missing components at each end. I think one was a fuse and the other was a bypass capacitor.
I am linking picture of the TCON board and a closer shot of the burned trace. At the top of... -
Re: Vizio e470va tv white logo then bright white logo nothing on scren
Argh... I meant to say the bottom connector on the board at the center-top of the unit (marked 715G4226-T02-000-005F)Leave a comment:
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Re: Vizio e470va tv white logo then bright white logo nothing on scren
I also have a E470VA.
Should I start another thread or use this one?
Mine appears to have a burnt component near the bottom-of-the-board connector.Leave a comment:
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Re: New Members - please post your introductions here
Same old sad story, met a TV, TV doesn't work.
In my case it is a VISIO E470VA. I didn't know the exact model # or symptoms when I bought it (for cheap). Now I do.
I had some good success replacing the caps in a different vendor's set awhile back. I thought maybe this was a cap problem too. Now... not so sure.
I am a software guy by trade, a radio ham, and I can use a soldering iron once I figure out what parts I need to replace. I have an O-scope, a multi-meter, and various RF generators...Leave a comment:
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