vizio vp322 bad caps...

[cadillacman]

Re: vizio vp322 bad caps...

yeah the more i dig into stuff the more i realize i need one.

Ill get something someday with a cap thats changed value but not bulged, and ill end up chasing it forever befoore i finally figure it out.

Have any of you bought the " build it yourself" esr meter or is there a better one you reccomend?


THis tv was also my first experience with pb free solder. Not too bad, just had to turn my iron up a little hotter

Most of the krap im used to working on is 20-30 year old arcade game monitors, old car stareo equip and car audio amplifiers, etc. the flat panel tv is kind of new to me, but not at all horrible. I love how they label most of the pins so you know what they are right off the bat.

[smalltownguy]

Re: vizio vp322 bad caps...

Cadillacman> glad you were able to find some use out this forum!

I'm in the process of repairing a little Dell 15" E153FPb that came from work.

I hit this thread:

https://www.badcaps.net/forum/showthread.php?t=3360

And found everything I needed.

Love this forum!

[cadillacman]

Re: vizio vp322 bad caps...

thanks for reffering me man, this place is awesome!

[geneg]

Re: vizio vp322 bad caps...

Ok, guys have a question on this VP322. I received this TV in a trade with a guy who does his best at repairing tvs with limited knowledge. He replaced a bunch of i presume vented capacitors and did a good solder job. The TV would show the orange Vizio logo and go to white when powered on with no pic or sound. I checked the board and there was no VS or VA when the set powered up. I started to tear into the board and check all the components. It turns out there was a bad mosfet and bad logical voltage regulator on the rail next to the plug for the mian board. I replace these and now the set turns on but I get a pop on the speakers like a voltage spike. Under further investigation I have VS and VA voltage high all the time so the screen shows a low glow when off. I unplugged all the connections except the main power and still VS and VA go high. I seem to still have a faulty component somewhere which i presume shows good without a load or a bad relay. Any ideas from any of the experts out there would be great.

[Evil Lurker]

Re: vizio vp322 bad caps...

Are you referring to the 12V+ linear regulator at position IC103 and the FET at q201? Did you use a standard TO-220 package linear regulator as a replacement and forget to electrically isolate it from the heatsink rail? Also what make and series caps were used as replacements at c233 c234 c236 c241 c204 c238?

Looking at the datasheet it would take a United Chemicon KZE, Nichicon HD, Panasonic FR or FM series cap to match the specs on the original samwha WB series... of course I would be willing to bet that those Samwhas are just a tad bit overrated... looking at the specs on the datasheets the things are just about one step below motherboard grade caps. If the replacement caps that were used are spec'd too low it won't be too long before they fail again.