moms vizio vx42L screen flickering

[BADHIGEEN]

Hello again all. I'm back with a look at a vizio 42 inch lcd I bought for mom about a year and a half ago. The symptoms started a few days ago with a flickering screen. I swapped the vizio for a spare Polaroid to see if I fix it and I took some pics

[kc8adu]

Re: moms vizio vx42L screen flickering

looks like you found the problem!

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

I sure hope its another easy one pic of the bad cap

[Krankshaft]

Re: moms vizio vx42L screen flickering

Have I been hitting the vodka punch too hard or is that a Chemicon KY ?

Sure you don't want to hammer the top down and seal it with some RTV ? I loved when I read that one from TC.

I've heard that the KYs don't like too much heat. They like to pop on hot graphics cards too.

Oh yeah and shy away from that Vizio, Westinghouse, and "insert unknown name here" crap you get what you pay for.

Vizio provides no parts or service for their products outside of the short warranty period. Which ironically is when they like to fail.

Panasonic FC or FMs would make good replacements and they definitely can take the heat.

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

All I could find on eBay was fc I found an fm but its to tall. I feel lucky or is that the 40 oz .
Is it OK to post eBay links here if so I'll post the link to what I found.
Krankshaft it does say ky but I don't see Chemicon any were on the cap. I have the same set a few months older with no troubles yet but I kill all power here when I leave 5 days a week about 10 hours a day hers never doesn't have power. As for heat mine runs very cool much cooler than the Polaroids and a lot smaller parts. I never checked moms for heat. I"ll wait to see what you guys have to say about these caps on eBay before I order. If this goes well I have a related 50 inch Philips plasma to ad to my chain of TV stories to share. As always thanks to this site and its members I'm fixing more stuff than throwing away.

[Krankshaft]

Re: moms vizio vx42L screen flickering

The pointed crown logo is Chemicons logo.

You're better off ordering from a reputable Panasonic distributor like Digikey.

The Panasonic FC series would replace the KY series fine. I always put them in arid environments and they perform great.

Be sure to replace any other KYs on the board too. As for cap sizing I'm sure you have some wiggle room if you can't find the exact same size as the original caps.

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

Digikey Is intimidating I cant find any thing there. I get the needle in a hay stack feeling.

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

ok I was able to find it. Here is the link
http://parts.digikey.com/1/parts/486...u-fc1v471.html Hope I don't get in trouble for it. I did a yahoo search and came up with the digikey link. It was to easy lol gonna order 10 now.
If only the hammer and rtv trick would work.

[hardwareguy]

Re: moms vizio vx42L screen flickering

Just enter the keywords into it..... lets say you were looking for a 16v 2200uF cap, just enter "16v 2200uf" in the search box and then narrow it down using categories like "Low ESR" or "low impedance".

Or if you know what series, say Panasonic FM, enter "16v 2200uF panasonic FM"

This works for pretty much any good online cap distributor.

Stay away from eBay.....its counterfeit central!

[Krankshaft]

Re: moms vizio vx42L screen flickering

I know what you mean the search engine takes some getting used to.

I enter capacitor in the search field. Then select electrolytic from the list then you get a simple set of drop down boxes to drill down for their electrolytic caps.

I select series FC don't bother with the low impedance some caps that are low ESR aren't even categorized with that suffix. Select the uF and WV and hit the button. Now you will be left with multiple matches of the same value and series the multiple manufacturer part numbers are for different sizes in that uF and WV.

Refer to the FC series datasheet for the correct part number for the correct size you need.

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

yeah moms tv is back up and running thank guys I wont look for parts any were else but digikey. I ordered the parts on the 27th and they came today that was fast. Glad it was so easy.

[tmwalsh]

Re: moms vizio vx42L screen flickering

Does anyone use Mouser? I just ordered a bunch of Chemicons from them 11/26 in the afternoon, and they got here yesterday, 11/30, afternoon. Considering Thanksgiving intervened, I was pretty pleased with the response. I didn't really consider price, just availability of size and capacity needed. Maybe a mistake on my part, but I ended up with two different versions(?), PW and HE, to fit the farads and size limits. I figured they had to be better than what was there, and would likely outlast the useful life of the computer [three years old already] and the TV [closer to 15 years]. Both series were Low ESR, 105C, and I don't have a good source to look up the old ripple and ESR figures, but two will replace a Fuuuu-whatever in two power supplies and the rest go into the SMPS on 27" RCA sets.
I couldn't find some 39uf's at Digikey, and figured it would be less expensive to have one order for everything. Any thoughts?
tom

[PlainBill]

Re: moms vizio vx42L screen flickering

Does anyone use Mouser? I just ordered a bunch of Chemicons from them 11/26 in the afternoon, and they got here yesterday, 11/30, afternoon. Considering Thanksgiving intervened, I was pretty pleased with the response. I didn't really consider price, just availability of size and capacity needed. Maybe a mistake on my part, but I ended up with two different versions(?), PW and HE, to fit the farads and size limits. I figured they had to be better than what was there, and would likely outlast the useful life of the computer [three years old already] and the TV [closer to 15 years]. Both series were Low ESR, 105C, and I don't have a good source to look up the old ripple and ESR figures, but two will replace a Fuuuu-whatever in two power supplies and the rest go into the SMPS on 27" RCA sets.
I couldn't find some 39uf's at Digikey, and figured it would be less expensive to have one order for everything. Any thoughts?
tom

Mouser is a good supplier, and their parts search engine is clearly superior to Digikey. Price difference is usually not significant. The one quibble I have with Mouser is shipping. Digikey has USPS First Class mail shipping as an option. This means I can get a small order delivered in two days for about $2.00-$2.50. Mouser doesn't have that option, so the minimum shipping is about $7.00.

PlainBill

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

I'm like a freeking hero around my house the past 24 hours or so lol .

[PlainBill]

Re: moms vizio vx42L screen flickering

I'm like a freeking hero around my house the past 24 hours or so lol .

It feels good, doesn't it? However, don't forget. Sooner or later Mom will remember when you spilled the juice on her good couch, didn't want to take out the garbage, or forgot her birthday. Then things will be back to normal.

PlainBill

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

The trash or the juice maybe never the b-day 7-11 hard to forget that one

[japlytic]

Re: moms vizio vx42L screen flickering

Are some of the Chemi-Con KY Series fakes?
Flat panel TVs and monitors can get quite hot inside.

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

darn that didn't last long it started to do that flicker thing again. I went out and bought a new Phillips 47 LCD for mom and I will try to fix the vx42l again for me. I have all the caps labled and removed.
1 nichicon 150uf 450v pt(m) glued
2 rubycon 47uf 63v yxf glued
3 rubycon 2200uf 10v yxg
4 rubycon 2200uf 10v yxg
5 rubycon? 470 16v ky
6 nichicon 680uf 16v pw(m)
7 nichicon 680uf 16v pw(m)
8 nichicon 680uf 35v pw(m)
9 nichicon 680uf 35v pw(m)
10 nichicon 680uf 35v pw(m)
11 nichicon 2.2uf 50v pw(m)
12 pan 470uf 35v fc (This is the cap we replaced in the first repair)
13 nichicon 470uf 16v pw(m)
14 rubycon 470uf 16v yxg

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

Also I use the same set for tv web games what ever but there's this one thing that really bugs the crap out of me is the led lit vizio logo on the front it messes with my peripheral vision and floats around on the screen while watching. I put black tape over it on this set but I have the other set apart now so I was thinking to just disconnect it

[BADHIGEEN]

Re: moms vizio vx42L screen flickering

well i boxed it up and stuck it on the back burner