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VIZIO VP322 HDTV10A has no video and won't power up completely.

Replaced the nine capacitors that came in the kit shown in the red square, plus a 470 uf next to the header in the upper right of photo. Symptoms; VIZIO emblem is amber when cord is plugged in. VIZIO emblem turns white when powered on. Small green LED flashes (on small PCB below the Power Supply PCB) when power up sequence is started. Black relay (upper left in photo) on power supply energizes for a short period then then de-energizes. Green LED stops flashing. During power up sequence getting the 16.5 and 12 VDC on the header in the red square of the picture. Always has the 5 VDC coming from the Video signal PCB to the right of the Power Supply PCB. Also have 5 VDC on the header in the upper right of picture. All fuses are good - standard fuses and pico fuses on all PCBs. Without a schematic I cannot tell where to go from here. I don't see any blown caps or arc marks or anything. This is a fun project and would appreciate some help. Have DVM ready to test whatever... http://acimg.auctivacommerce.com/imgdata/0/1/9/4/5/2/webimg/3268267.jpg Thank you. Patrick

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ctf1800
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SOURCE: Flashing Green Light on Front of 73" Projection TV

on the signal board replace the caps by the 5/9 volt regulators. c2p04 is the main culprit. 6 caps in total can be changed. I believe c2p05 also.

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SOURCE: Green Spot/Blotch/Stain/Wierd Thing

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SOURCE: Toshiba 57H81 Flashing Red Power Light, Blown Fused F850+F852

Solved by resoldering some solder joints!!!!!!!
********
Toshiba Model 57H81 Rear Projection TV - Purchased 11-09-2001

Problem: Toshiba 57H81 Flashing Red Power Light, No Picture/Sound, Blown Fuses F850 + F852

Symptoms January, 2009:

  • Upon turning on set I got flashing red power light and nothing else.
  • Removing plug for one minute and plugging in results in:
    • Audible click, steady red power light for 2 seconds then slow flashing red light
    • Pushing power button results in steady red for about 2 seconds then slow flashing red light, no other set activity
  • Removing power cord for several hours and plugging back in made no change
    • Audible click, steady red for about 2 seconds then slow flashing red light
  • Possible related note: Over past several months occasionally the entire screen would flicker momentarily and at other times be problem free for weeks.
  • Fuses F850 and F852 found blown

Repairs Made:
  • PD0074 DEF/CON Power Board
    • There are two main power supply capacitors in this set. They are C-809 and C-810. One their negative lead on the printed circuit board re-soldered leads and nearby contacts. I’m told that because the factory left out a printed circuit board eyelet, the connection will come loose over time. When I called Toshiba customer service they said there was a known solder joint problem causing blinking red light.
    • Replaced blown fuses F850 and F852.
      • I actually installed a fuse panel on the inside of the cabinet and routed the fuse connections here instead of ordering the special fuses and replacing them on the circuit board.
      • Had to use a 5 Amp SLO-BLOW for F850. Fast blow does not survive power up. Get the red blinking light.
      • Used a fast blow 2 Amp for F852.
  • PD0073 SIGNAL Board
    • Re-soldered Q751 + Q752 STK392-110 Convergence Amps
    • Re-soldered adjacent pads that looks suspicious

Total Cost to Repair about $10
  • Twelve hours of my time over three days to research issue, disassemble set, make repairs, add fuse panel.
  • Already owned Service Manual and Circuit diagrams from a different 2004 repair.
  • Less than ten dollars at Radio Shack for fuses and fuse panel. Already had wires, etc.
  • Some solder. Already owned de-soldering tools, etc.
  • Visited both local authorized Toshiba factory service repair facilities. One said repair would have to include replacing Q751 + Q752 STK392-110 Convergence Amps with ST392-180, and realigning set for a total of $500+ and it would be more if they had to order a power board. NO THANK YOU! Other shop said $65 for site visit and $30 to make an estimate that could be applied to repair.

Posted on Jan 05, 2009

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1 Answer

The sound on my vizio model no is vp322 hdtv10a comes on for a short time and then it goes off and the only time it will come back on is when I cut hte TV off and after a while and the cut it back on.


You may have a bad power supply, or the voltage regulators on the main board are flaky. It may be a bad capacitor, generally a visible difference from the other capacitors will indicate the candidate.

Vizio has a recurring problem with \'adjusable\' voltage regulators on their mainboards that produce the sub-5 volts components desire.

So, it is a component that is heat sensitive, has a bad / cold solder joint, or possibly the power supply capacitor that drives the sound ICs and amplifier.

Oct 27, 2014 | Vizio Vp322 Hdtv10a Crossover...

1 Answer

Vp322 hdtv10a have picture but no sound, what board is it?


If the problem is same with different input devices and you have ensured the are no loose contacts in power outlet, RC jack, cable and sockets, the TV needs servicing.

Aug 17, 2012 | Vizio VP322 32 in. Plasma TV

1 Answer

I have the Vizio vp322 hdtv10a that doesn't turn on,I opened the back panel and found that the capacitors aren't bulging.


Hello, might need a Main Unit or Power Supply by the sounds of it. Try out a company named ShopJimmy.com for parts. I have used them with great success in the past. I included a link to their site from your model page. Hope that helps!
TeeVeeMan2@gmail.com
http://www.shopjimmy.com/catalogsearch/result/?q=vp322

Sep 06, 2011 | Vizio L32 32 in. LCD HDTV

1 Answer

My vizio vp322 hdtv10a was on then just turned off all of a sudden. When i tryd to turn it on the vizio light comes on but the screen is still black.


Hi,

You need to check the output voltages of the power supply to see which one goes off. It may be due to short circuits some where.If otherwise,
Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.


I hope this will help to rectify the problem, and do take care in handling the TV, because it contains high voltages...

Jun 24, 2011 | Vizio VP322 32 in. Plasma TV

1 Answer

Hi my vizo 32 inch model vp322 hdtv10A has been flickering when it turns on and now their is no power and no lights and the tv wont turn on. what would be the cause of that?


Bad power supply, most likely. Take the back off and look around to see if any capacitors are bulged out. These need to be replaced with the same farad value, most likely 1000uF, but the voltage can be increased a little if need be.
http://www.youtube.com/watch?v=BNHHrgX_6cs
Video demonstration.
You can get these parts at Radio Shack, or on Ebay. Just see which ones are puffed and match the value.
http://cgi.ebay.com/Vizio-VP322HDTV10A-Power-Supply-REPAIR-SERVICE-/120683332030?pt=LH_DefaultDomain_0&hash=item1c194981be#ht_500wt_684
This is a powersupply. The capacitors are the ones with the + marks in the center of the circles.

Jun 24, 2011 | Vizio Televison & Video

2 Answers

I think I need a new power module for my Vizio vp322 hdtv10a tv. How do I open the TV to expose this module? There are about 10 million screws on the back of the set.


Remove the 4 screws holding the stand. Remove all the perimeter screws. Remove all the screws from the bottom speaker panel and the rest of the perimeter screws and the ground wire screws at each speaker. remove the screws on the surface of the back panel and you are in. The power supply is the large board in the middle. The bad capacitors are in the secondary and were C233, C234, and C236. I replaced these 3 capacitors and fixed this problem. They were 1-10v 1000uF and 2- 10v 3300uF electrolitic board mount capacitors. Easy to spot on the power board, the tops were bulged up. $5.54 later it works perfectly now.

Dec 18, 2009 | Vizio VP322 32 in. Plasma TV

2 Answers

Vizio VP322 HDTV10A won't turn on


I replaced 3 capacitors and fixed this problem. They were 1-10v 1000uF and 2- 10v 3300uF electrolitic board mount capacitors. Easy to spot on the power board, the tops were bulged up. $5.54 later it works perfectly now.

Dec 17, 2009 | Televison & Video

1 Answer

My vizio wont come on its like its no power


The Vizio VP322 is notorious for having bad capacitors on the power supply circuit board. They will probably be bulging and may have electrolyte leaking. I replaced four bad capacitors (with a different brand just in case) and fixed it. Total cost under $10. A lot cheaper and better than replacing the whole circuit board which may contain the same "faulty" capacitors from the factory

Nov 29, 2009 | Vizio VP322 32 in. Plasma TV

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