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Magnavox lcd Heard pop and now no screen picture or sound

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  • Contributor
  • 17 Answers

Probably a popped capacitor inside on power supply board

Posted on Feb 23, 2016

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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welcomejee
  • 10594 Answers

SOURCE: sony LCD KDF-E42A10 Television

Hi,
Please count flashes on Sony KDF-E42A10 tv and let me know.
Its error signal and shows problem with particular area in your tv.



Posted on Sep 29, 2008

waynejamescm
  • 67 Answers

SOURCE: PDP42V18HA No picture, but voice

Hello,

Planars can be difficult televisions to work on. The company is really only a shadow company that doesn't have any parts or service literature.

That being said, you probably have a shorted bridge rectifier on this TV. That was more than likely the pop you heard. If you have electronics experience, check the secondary on the power supply, specifically the feeds for the X and Y SUS. Also, there are always bad capacitors in these sets, so it might have been an electrolytic capacitor exploding.

If you don't have electronics experience, and have a competent repair shop nearby, they may be able to get you back up and running again for under $200.00. But they may not guarantee it to stay working for any length of time.

Hope this helps you...

Posted on Jan 08, 2009

circuitworld
  • 335 Answers

SOURCE: 32'' Vizio LCD no picture or sound

Your filter capacitors have popped due to diodes shorting, P-channel FETs shorting from gate-to-drain. Pull-up resistors have changed value and as a result your capacitors have peaked (popped)....so now the tv is in protection mode to prevent further damage to your tv. Take it to your local shop for servicing, or take it back if its under warranty......

Posted on Nov 05, 2009

  • 8457 Answers

SOURCE: heard a loud pop during turn on, not picture but

Ur LCD inverter board it dead.Replaced this board u will get ur picture back.Tries websites like shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.It a long shape board.

Posted on Apr 26, 2010

budmrtn
  • 11361 Answers

SOURCE: toshiba 37 lcd tv picture gone sound remains ok

The power supply module will be the first place to look, it may have bad DC filter caps, blown or burnt parts, cold solder joints, etc.
Here is the service manual:
http://elektrotanya.com/?q=showresult&megnev=Toshiba&megnev2=32AV500U%20&kategoria=&kat2=all

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Please post back what you find.

Posted on Jul 28, 2010

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I heard two popping sounds and now my television will not power on.


A popping sound as you describe sounds as if your tv blew a couple capicators on the main control board. More than likely , you are needing to aquire a new main circuit board.

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I heard a pop sound and now when I turn the tv on the picture comes on for a second and then fades away


Now,the tv is turn on,the picture come on only for a few sec.than died,you still have sound left?Yes,than ur tv have 1 or 2 a long board call the LCD inverter boards is dead.These 1 or 2 long LCD inverter boards help the LCD picture screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those 1 or 2 long LCD inverter boards for the replacement.

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Heard a loud pop during turn on, not picture but


Ur LCD inverter board it dead.Replaced this board u will get ur picture back.Tries websites like shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.It a long shape board.

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Could be the power supply gone bad.
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42 inch LG Plasma TV - Lost picture


Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.

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No pic. or sound but power light is on


Most likely the blue picture tube arched and shorted out the horzontal output transistor.Very common problem with this chassis.Now if you have an electronics background you can most likley fix it, if not you will be dealing with finding a high voltage leak consisting of 31,000 volts which can kill you.That pop you heard was the high voltage leaking to ground.

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TV makes "Pops" and "Crackles" sounds from the back while viewing


remove the cover and observe the source of the light. if its in the picture tube it can be fixed with a picture rejuvonator. if its a cracked solder joint a soldering iron and solder will fix it.

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Magnavox MWR-20V6 DVD/VCR recorder fails to record one time but not the next This problem just recently started as the unit was functioning perfectly up to now. And I've kept the unit in excellent condition and free of any dust. What's happening is this. When the timer is set to record a program, the unit will turn on and begin to record. But after about 9-10 seconds of recording, it will fail and you'll see an error message saying you cannot record on this disk. FYI, this happens too when not using the timer and just pressing record. And in both cases, it's been hit or miss, so one time it successfully records no problem and the next time no. So you don't know when and if it's going to happen, which is really frustrating! What's even weirder is that once it failed, you can wait a few seconds and try recording again with possible success. So if it failed at first, it may work the next time, but who knows if it'll work after this. And even if it does work the next time, after that, it's again hit or miss. This recording problem happens even when dubbing. So it doesn't matter if you're copying from VHS to DVD, using the time, or just hitting DVD record, the same recording error happens. And as I said above, it may work the next time but who knows? And even if it worked then, anytime after that is also very hit or miss. Nobody else touches the unit and it's never been moved or banged. So again, I've kept it in very good shape and working order. No problems whatsoever on the VCR side. And I most often use DVD-R discs rather than RWs, but even with RWs, the same problem can happen. Lastly, finalizing has also become more hit or miss now when it used to be very consistent. So I don't even know when or if it'll be successful in finalizing a discs. Most times, it does work, but a couple of times, it hasn't. Lastly, a weird thing with discs that failed to finalize is this. A few of them were finally able to be successfully finalized after just sitting around for about a month of not being able to be finalized. So for whatever reason, a few of those discs that wouldn't repeatedly finalize suddenly worked. The rest of those that were not successful still cannot be finalized. And I've kept all these discs in plastic sleeves or in a disc case.

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