How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask TV Tech1 Your Own Question

TV Tech1
TV Tech1, Technician
Category: TV
Satisfied Customers: 5236
Experience:  30 Years experience. Authorized Warranty servicer.
26807325
Type Your TV Question Here...
TV Tech1 is online now
A new question is answered every 9 seconds

My tv has no power. everything is plugged in properly to a

Resolved Question:

My tv has no power. everything is plugged in properly to a good outlet through a power strip. is there any fuses that can be blown in tv? tv model type is vp50
Submitted: 2 years ago.
Category: TV
Expert:  TV Tech1 replied 2 years ago.

So none of the lights on the front light up or display any blinking? Check around the edge of the TV for a power switch, Back when this GREEN "movement" started, they used to put power switches on the bottom and mostly on the rigth side....but I've seen a few on the Left.

 

They were so well hidden that if you moved the TV set you turned it off and never knew you did...until you turn it on later.

 

 

Customer: replied 2 years ago.
There is a power switch on the right side of the set. When I press it nothing happens. the small light on the set normaly is amber when off and green when on.now there is no light.The light is locatedon the lower right side of set.
Expert:  TV Tech1 replied 2 years ago.

Ok, the LIGHTS are the KEY to your problem. Glad you found the switch too, a lot of people accidently turn off their TVs without even knowing it, and if it's off, the lights never light.

 

Since you've tried the power switch and the light did not come back on, then the Standby power supply isn't working, or the TV's microprocessor is dead and not lighting the lights.

 

If you have a voltmeter, then I'd check the 5 volt power supply. If you recently had a storm or something like a major power outage, inform me of that. I'd prefer a simple voltage test, but not everyone has a voltmeter in their homes, and a hardware store or a Sears store isn't nearby.

 

Fill me in on the availablity of the voltmeter.

 

Customer: replied 2 years ago.
I do not have a voltmeter.I can get one later in the day. the tv was working and then just shut down.there were no storms or power outages at the time this happened. Also, where would I check with the voltmeter?
Expert:  TV Tech1 replied 2 years ago.

You'd check ONE board....the power supply board. It creates the STANDBY 5 Volts to turn on the TV's microprocessor. Newer units may use 3.3 Volt standby because the micros are newer.

 

Either case, All TV sets have a standby power supply that makes that micro run all the time. The micro actually lights up the lights, and then IT turns on the REST of the power supply.

 

So your problem is rather easy to fix, but we need to test the Standby voltage.

 

Now...if you have a SEARS near you, the BEST Voltmeter for the LEAST MONEY comes from their stores ---

 

http://www.sears.com/shc/s/p_10153_12605_03482139000P?prdNo=1&blockNo=1&blockType=G1

 

And the thing I LIKE about it is the fact you set it to DC Voltage and it reads all voltages from 1 Volt to 600 Volts DC.

 

And reading resistance is the same way. Set it and forget it. Place the black probe on ground and use the red probe to find the 5 or 3.3 Volt standby voltage.

 

Look at this --

 

graphic

 

You see how you just turn the knob to VDC and leave it there ? AUTORANGING meters are the BEST. Set it and forget it.

 

And for $27 versus most at $50+ , you can't go wrong with that price.

It's an "affordable tool" compared to getting TWO boards for the TV. Power supplys are cheap, Main boards are fair....I'm hoping you have a CHEAP repair.

 

I will tell you this...you would have paid around $150 to $200 labor to get a local Tech to fix this.

 

That's where you're saving all your money at. You pay $42 and $27 and that's $69. You get to KEEP the voltmeter too for future repairs on Just Answer.

 

And you save at least $80 to $130 over hiring a Tech to work on it.

Oh, by the way....I save too. I don't have to drive to your home. I'm available 6AM to 10PM , even on the weekends.

 

We both benefit.

 

 

Customer: replied 2 years ago.
I went out and got a voltmeter. Returned with it before your reply. The one I have should do the job. Let me know what I should do next. Thanks!
Expert:  TV Tech1 replied 2 years ago.

Ok, got a digital camera? Let me know.

 

I will be looking up info, and trying to piece together the next step in troubleshooting. I'm going to TRY to make this as easy as possible on you.

Customer: replied 2 years ago.
Would the camera feature on my i-phone do?
Expert:  TV Tech1 replied 2 years ago.

ONLY if you can transfer the PICTURE using Email to your HOME computer, then saving the picture to your Computer's desktop....

 

Once you have the picture on your desktop, IE 8 or 9, or Google Chrome or Foxfire can be used to transfer the picture to your response box on Just Answers.

 

Like THIS --

 

graphic

 

And this ---

 

graphic

 

On Google Chrome you have to ADD TEXT, press REPLY, Then press EDIT to get the paperclip to appear.

 

Safari or Opera....forget it. No paper clip and none on Cell phones either. That's going to be ADDED, but it's not here, right now.

 

Anyways, there is an issue with the TV's MODEL. You may have MORE model number than just the VP50 part of it. You'll need to get the TV down anyways, and lay it on a PADDED table near a power plug. Once you do that, look at the sticker on the back for the model and serial number. Here is the list of possible models, plus it shows you WHY we need the serial number too.

 

graphic

 

 

Customer: replied 2 years ago.
Model VIZIO VP50 HDTV20A Serial# XXXXX
Expert:  TV Tech1 replied 2 years ago.

Dang...I sure hope you didn't just pull that off the list I gave you....that was just an example of what you would see on the sticker. The Big Fat Arrow pointed to all the possible VP50 models, and that smaller arrow pointed to the serial numbers and what part we needed from the serial number.

 

Otherwise...I got REAL LUCKY selecting the same model as you have. There's an H missing in the serial, it is there, correct?

 

 

0940-0000-2180 SMPS

 

3850-0142-0150

3850-0142-0395 MAIN

 

 

Customer: replied 2 years ago.
I double checked the sticker on my set. Model VIZIO VP50 HDTVA Model PHSAVAH5022234
Expert:  TV Tech1 replied 2 years ago.

OK, with the info above being CORRECT -- here are your Test points for ALL TESTS that we may run.

 

SET your voltmeter to the DC Volts setting --Thats the V with the two FLAT lines above the V. Or the Vdc setting....

 

 

graphic

 

This picture shows the 5 Volt Standby test pad, it shows the POWER ON Test PIN (4th from bottom of the plug)

 

And....Never trust the picture over your OWN EYES. If you see the Power on Pin elsewhere, they may have modified the board. Same with the 5Vsby or standby 5 Volts.

 

The key is the board IS MARKED with the INFO. How do you think we field techs pull the back cover off, pull out our meters, test a few points....and then tell you what the problem is ?

Because the GOOD manufacturers MARK the test points and they mark them LOGICALLY.

 

5vsb....P-on ....short, and sweet.

 

Now, the BLACK test probe can simply be touched to the metal backside of the Plasma Panel because that's 0 Volts or Ground /GND.

 

All voltages are measured with the black test probe connected to that.

 

The RED test probe is the one you use to measure the 5 Volt standby FIRST.

Gotta have that at 5 Volts DC when the TV is plugged in. All the time.

 

The P-on line -- If the micro is WORKING, that P-On line should measure 0 Volts when OFF, and 5 Volts when ON.

 

Picture too small? Look at the lower right corner of IE 8 -- That + 100 box will let you magnify the Picture for a better closeup of the picture.

 

Sorry, the picture isn't from my Sony 14MP camera. It's probably from a 2MP camera.

Customer: replied 2 years ago.

I went and tested the 5 volt test pin and the needle on my volt meter needle never moved

Expert:  TV Tech1 replied 2 years ago.

Ok, let's make sure the meter is working before assuming the power supply board is bad.

 

Get a battery, whether it's a 1.5 volt or a 9 volt battery (preferred) and measure it. You should get a reading from the battery if it's working. If it is, let me know.

 

Keep it set to the same setting you measured the 5 volts with.

 

Customer: replied 2 years ago.

tested a 9 volt battery meter working fine

Expert:  TV Tech1 replied 2 years ago.

You need this part then --

 

0940-0000-2180 SMPS

 

Ok, here is the part you need to order --

 

http://www.vizparts.com/product_detail.php?pid=1816

 

A lot of places are out of stock right now, so order it quickly.

 

A little MORE expensive, but better than nothing --

 

http://compare.ebay.com/like/130575354121?var=lv&ltyp=AllFixedPriceItemTypes&var=sbar&_lwgsi=y&cbt=y

 

That should get you up and running, since there's no startup/run voltage to the micro.

 

Customer: replied 2 years ago.
Are there any retail stores you could suggest to order this, or should I order on line?
Expert:  TV Tech1 replied 2 years ago.

Best to order it online. You really can't go to Sears (possibly) and find they have one in stock, but Sears does sell parts at their part store. I just don't expect they'll have it.

 

That's why online is faster and easier to me. Shop in your skivvies. No gas, no drive time.

 

Got a Sears part store near you? Call them if you want. Give them the

0940 -0000-2180 number, and give them the LJ44-00132B number. One is the Vizio part number, the other is the Samsung Board number. Yes, some parts are built by Samsung.

 

 

 

 

TV Tech1, Technician
Category: TV
Satisfied Customers: 5236
Experience: 30 Years experience. Authorized Warranty servicer.
TV Tech1 and 2 other TV Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I'm screaming your praises!! WOW! I plugged my TV in and bammo! The picture came on bright and beautiful. What a relief! YOU saved me some money and headache. VM United States
< Last | Next >
  • I'm screaming your praises!! WOW! I plugged my TV in and bammo! The picture came on bright and beautiful. What a relief! YOU saved me some money and headache. VM United States
  • I love this site! $9 instead of a repairman or new/used frig can't be beaten. This older woman will worry less now that she knows about this site. Bless you all. Windy USA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
 
 
 

Meet The Experts:

 
 
 
  • TV Tech1

    Technician

    Satisfied Customers:

    4800
    30 Years experience. Authorized Warranty servicer.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TV/TVTech1/2013-3-25_625_TECH1Nobanner.64x64.jpg TV Tech1's Avatar

    TV Tech1

    Technician

    Satisfied Customers:

    4800
    30 Years experience. Authorized Warranty servicer.
  • http://ww2.justanswer.com/uploads/OR/OriginalSeadog/2011-7-22_191917_ProfilePicture.64x64.jpg Rod's Avatar

    Rod

    TV & Communications Sys Repair

    Satisfied Customers:

    2354
    FCC Commercial License, Previous owner of Electronics Repair shop, 40+ years in electronic systems.
  • http://ww2.justanswer.com/uploads/benimur/2009-03-29_003401_id_2.jpg Louie's Avatar

    Louie

    Technician

    Satisfied Customers:

    2208
    25+ yrs. experience in the field and 3+ yrs. online, down to component level.
  • http://ww2.justanswer.com/uploads/P0/p0llinate/2011-4-27_174649_tucker.64x64.JPG Nathan's Avatar

    Nathan

    Installer

    Satisfied Customers:

    1683
    Custom home theater installer, authorized dealer top brands.
  • http://ww2.justanswer.com/uploads/ST/steven.benoit/2011-4-1_194735_untitled1.64x64.jpg Steven's Avatar

    Steven

    Technician

    Satisfied Customers:

    1366
    Ma. Master Technician Lic. Authorized Warranty Support.
  • http://ww2.justanswer.com/uploads/IT/ITPeter/2011-5-3_23187_Pete.64x64.JPG Pete's Avatar

    Pete

    Electronic Engineer

    Satisfied Customers:

    1260
    12+ years experience installing and repairing electronics.
  • http://ww2.justanswer.com/uploads/3G/3guk/2011-1-15_132320_D1SC01363.64x64.jpg James's Avatar

    James

    Technician

    Satisfied Customers:

    1154
    AV Service Engineer (4 Years)
 
 
 
Chat Now With A TV Technician
TV Tech1
TV Tech1
4814 Satisfied Customers
30 Years experience. Authorized Warranty servicer.