Liquid accidents are repairable?

[tibimakai]

It's possible?
I have a Vizio TV that I could pick up.
This is what the owner states:
"I have this 42" Vizio LED TV as stated above. I spilled water on the front of it and now the picture is messed up.
Hazy picture and solid white lines going through the display.
I don't know what else to do with it I don't have the time or resources to fix it.
Maybe someone knows better than I what to do with it."

[randtek]

Re: Liquid accidents are repairable?

Repairing liquid damage to electronics is a pretty iffy prospect. It is easiest and most often successful if you begin IMMEDIATELY after the spill occurs. If the liquid and or residue has been left in the electronics for any length of time, corrosion to connections, component leads etc. quickly sets in. Repairing that kind of damage is time consuming, and often not worth the trouble. If the corrosion has reached the point that is affecting circuit operation. there is often corrosion damage to many components, and often further component damage due to being operated with corrosion in the circuits. From what you are describing, the LCD panel is probably shot.

[XmouseX]

Re: Liquid accidents are repairable?

I second that...lol

[tibimakai]

Re: Liquid accidents are repairable?

I had another 42" LED Vizio with some kind of white powdery substance on the T-con connection and after cleaning it up the TV showed a nice picture, but it had a thin blue vertical line right on the center.
I guess, this on is in a similar shape.
Thanks.

[tom66]

Re: Liquid accidents are repairable?

Not repairable 90% of cases:
http://www.youtube.com/watch?v=yqcqD...=results_video

What I wonder, how do people get their TVs wet? Do you have a drink with it?

[tibimakai]

Re: Liquid accidents are repairable?

...probably partying or they are drunk.

[mattpd]

Re: Liquid accidents are repairable?

Not repairable 90% of cases:
http://www.youtube.com/watch?v=yqcqD...=results_video

What I wonder, how do people get their TVs wet? Do you have a drink with it?

For a TV that expensive I would at least attempt to mend the tab with some jumpers. I would probably need glasses by the time I finished...

[tom66]

Re: Liquid accidents are repairable?

For a TV that expensive I would at least attempt to mend the tab with some jumpers. I would probably need glasses by the time I finished...

Good luck with 0.2mm pin pitch and no copper left to solder. TV tech in this case is paid to do work, which is not economical for such a tricky job.

[mattpd]

Re: Liquid accidents are repairable?

Good luck with 0.2mm pin pitch and no copper left to solder. TV tech in this case is paid to do work, which is not economical for such a tricky job.

It looks like all the damaged traces have at least a little copper left. Some fine grit sand paper should expose the tiny piece of copper that is left in the tab and as long as its big enough for a tiny wire, it should be easy to find a place on the board to attach it.

Its worth a try, but defiantly in your spare time.

[tibimakai]

Re: Liquid accidents are repairable?

I'm trying to solder some very tiny traces in a Samsung Vibrant cell phone, (when I removed the charging port I have ripped two traces off) and I couldn't(yet). The two traces are so close to each other and the second problem is that I'm having a hard time making the wire to stick to those tiny traces.
To solder something so fine, we shouldn't use some smaller solder iron?
Sandpaper is the way to go on these ribbons.

[mattpd]

Re: Liquid accidents are repairable?

A pad so small would have to be super clean and fluxed well to get anything to stick. It would require a very tiny soldering tip also. Tin the pad, tin the wire, clean the tip very well and go to work.

Hopefully you get it right on the first try because I can see ruining the tab completely if you tried too many times.

[tibimakai]

Re: Liquid accidents are repairable?

The wire is so short that when I finish one side it will melt when I'm trying to solder the other side.
I think that I will put some kepton tape on the two wires to hold them in place.

[mattpd]

Re: Liquid accidents are repairable?

Yeah I have had that problem too. They make heatsinks that clip on wires to prevent this, but the wire is probably too small to clip it on. Can you use a longer flexible wire and tuck it away after you get both ends soldered?

[MisterD]

Re: Liquid accidents are repairable?

The wire is so short that when I finish one side it will melt when I'm trying to solder the other side.
I think that I will put some kepton tape on the two wires to hold them in place.

Take an old power cord and strip some of the insulation off it leaving some pieces longer than what you need, then separate the strands of wire and pull one strand aside, this is the strand you will use, tin it with solder, you can then hold the insulation with your hand and get the one end soldered after that you cut the wire just slightly longer that what you need and solder the other end.

[tibimakai]

Re: Liquid accidents are repairable?

Thanks, I will try that way. I have very small gage copper wire, but that one has enamel on it and it's not easy to clean it well without braking it.
I'm starting to repair cell phones, laptops, next to TVs and monitors. I'm doing these when the TV "business" slows down.

[severach]

Re: Liquid accidents are repairable?

I get my repair strips from stranded wire in power supplies. Soldering the strands to fine pitch traces doesn't require a new iron, it requires new skills with an Xacto knife. The knife performs 3 duties.

0) The first side of the strand is soldered in place still attached to the full insulated wire as a handle. No knife here.

1) Once the full wire has been pushed around to where the strand sits above the trace on the other side, hold the knife in the middle of the strand to press down, steady position, and block the heat. Only a strands worth of heat is coming through and it doesn't take much to block it.

2) Once the strand is soldered and can stand up to a little beating from the knife, cut the strand off the full wire. So long as only one side pops loose you can redo quickly as above. If both sides come off discard the stub and use another stand from the full wire.

3) If successive traces need to be fixed, place the razor along the previous trace to solder the first side which blocks the iron from desoldering the old trace and spaces the new trace properly.

Don't screw up. It's easy to get careless and have your iron remove all the repaired traces like a bull in a china shop.

[tibimakai]

Re: Liquid accidents are repairable?

Thank you, I will try it this way first.