Question about Akai LCT2715 27 in. LCD Television

1 Answer

Power Supply Board Problem?

I have had this unit for nearly two years, and haven't had any major problems with it. I almost never have used the built-in DVD player, instead using a separate DVD player that is connected to this unit.

It's probably a coincidence, but a few days ago, I clicked the eject button on the DVD player, and found a disc that had been inside for nearly a year. I popped in back in, and continued to used the TV, without using the DVD player. A day or two passed as I used the power ("Standby") button on the side to turn the TV off and on (instead of the remote.)

A couple of days ago, when I tried to turn the TV on, the screen remained dark, and the power indicator was flashing an orangish red. I then tried to use the remote, without any success.

I unplugged the unit for a couple of minutes, before trying to turn it on again, unsuccessfully, and then left it unplugged overnight before again trying to power in up, unsuccessfully.

I have tried to click the standby button after plugging it in, I have tried to hold down the button after plugging it in, I have been holding down the button before plugging it in, and I have held it down for over a minute. Nothing seems to work. At this point, given how many problems there have apparently been with this model after only a short time, it doesn't seem to make sense to invest $300 for a part that will probably quickly fail, also. At this point, I would settle for simply removing the DVD that's in the slot. I tried similar techniques with the disc eject button, also to no avail. On PCs, holding down control/alt/delete at the same time has an effect. I am just wondering if any combination of buttons on this model would do anything.

Out of frustration, with the unit unplugged, I even removed four screws and took off the plastic cover on the back of the DVD compartment, and tried to remove the DVD disc by grabbing the edge with a set of tweezers, I could get a pretty good grip, but it felt like the center of it might be on the spindle of the player that spins it, so I was not able to remove it.

Any suggestions? Again, at this point, I would settle for simply removing the disc (even if it might get a little scuffed in the process.)

Thank you.

call me at 801.664.5450

Note: I have already left you a voicemail on your phone. thanks.

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The motor that spins the DVD, locks it magnetically to another free spinning disk... if you got that far, remove the dvd player part, flip it upside down, see if you can manually move some of the gears. you should be able to free the DVD enough to pull it out with the tweezers. if you can send a picture to s69joe@yahoo.com I might be able to point out what to move.

Posted on Dec 11, 2008

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1 Answer

TV will not power up when plugged in. i hear a clicking noise near the power supply.


That problem is usually have 2 causes..Its either power supply board or main board..

Please take this steps on how to determine the problem:
1. Open the back cover.
2. Check the power supply output...It should have 5vdc for the main board..12vdc or 16vdc for the audio and 24vdc for the back-light inverter..
3. If those 3 voltage supplies have encountered voltage drop...The problem could be on power supply board..
4. If the power supply output is normal..The problem could be on the main board...
5. If the problem is power supply you should check if the capacitors are bulged on the top and try to replaced it..If you can't do that you can purchased new power supply board..
6. If the problem is on main board there is no D.I.Y repair on that so you need to buy a new main board that fits to your TV..
Hope this solution will be helpful..

Thanks for using fixya...

Jun 06, 2012 | Sony BRAVIA KDL-52S5100 52 in. LCD HDTV

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Picture on my Toshiba 37RV753B has gone off and the standby light keeps flashing yellow. It was working ok a few hours ago, but I switched it off to go out and now it won't work. It's only just over a


Hello!
If you have used your TV 24/7 for the past year, the issue might be in the power supply. If there are "bloated" capacitors, set will not start up. If you haven't unplug it for a year, it might be staying alive. Once you unplugged the set, those capacitors won't let your set back to normal. That's a big project and requires technical background. If you think you can handle that, open your TV set and inspect TV's power supply board. It will be located near power cord plug or wire. Also, it might be covered by tin shield, which must be removed for further observation. If you see any "bloated" electrolytic capacitors, replace them with same value and voltage. But it might be main board's issue, as well. what is your place's ambient temperature? If it's lower, than 75F, try to warm up the back of the set, before even trying to poke it open. Use hair dryer. First, point it on main board's in/out connectors. Do not overheat! Few minutes might be enough. Then, try to plug the set in and observe the behavior. Any change? turns on? Main board is bad. Same with power supply. If heating up main board area does nothing, try power supply area. If it makes a difference, start looking for bad capacitors.
Good luck,
Let me know results.
Thanks,
Alex.

Dec 10, 2011 | Toshiba Flat Panel Televisions

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My Sharp LCD panel color TV. does not have any power supply. When I turn on the power button, its power indicator led from red to green for split second and completely turn off without any life. What...


Good day!

This are the steps to find and fix that problem.


  1. Open the cover of your TV.
  2. Disconnect the input supply of system board or main board that comes from the power supply unit.
  3. Power ON the TV to check the voltage reading of disconnected connector to the input of system board by using voltmeter.
  4. Check the 5vdc and 12vdc by using voltmeter.If you got voltage reading of 5vdc and 12vdc,try to connect the input connector of the system board and check the voltage again.If no voltage when you connect it.There's a shorted parts on your system board.Replace the whole system board because its very difficult and expensive to repair it.
  5. When the input voltage of system board doesn't have 5vdc and 12vdc even disconnected on the board.The problem is on power supply.
Check the following:
  • Fuse-Check the fuse if busted.
  • Transistor and diode-Check the transistor and diode if shorted.
  • Resistor-Check the resistor if open/change value.
  • Capacitor-Check the capacitor if leak/bulge on top.
If you found the defective parts that mention above.Replace it with the same type and ratings.
NOTE:If the following parts are OK and the problem is still there.The power supply have major problem and its not for D.I.Y..

Thank you and good luck

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DV-585K (PIONEER), My player is not turning on. I've already check the cord, fuse and the switch and they are all good. What else could I check or is there any parts that needs to be replace if problem is...


Hi,
The most common caused why your unit didn't power up was because of faulty power supply board. Since you've already checked the AC line, the fault now is quite technical if you haven't an experienced in electronics. The board must check the faulty parts like the fusible resistor in line with the shorted voltage regulator IC/transistor (mounted in heat sink), dried electrolytic filter capacitor, open/shorted chopper transformer, shorted diode. You must know how to test this parts to pinpoint where the fault came from. If you can't troubleshoot the board yourself, you may replaced it by inquiring to your local pioneer service center for the power supply board's availability.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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No power to tv through power cord yes


good day

the problem of your unit is on the power supply...the power supply is the that gives supply to all of the board that TV have....
I give you some tips to perform a troubleshooting...this solution is for D.I.Y and simple trouble shooting only...if this is not successful the trouble of your power supply is major and its very difficult to repair..
so if that case happen I suggest to purchase a new power supply..

your power supply looks like this?

bugoy31.jpg


first,you have to remove the cover of your TV..
secondly,after you remove the cover..the power supply will reveal and remove it to perform trouble shooting by unscrewing it
thirdly,check the fuse..if busted replace it and check some shorted transistor and diode by using multimeter tester...
fourthly,also look for leak or bulging top capacitor..if found replace it..also check the open or change value resistor..
and finally if you found any defective parts test it by plug in the ac supply to your power supply unit and check the output voltage...if you got 5v,24,and 16vdc it means that your power supply is OK..and if not,your power supply got a major trouble..your option is to give it to the qualified technician or purchase the new one..

if you are purchase a new power supply I give you a web site to order..

http://www.electronica-usa.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=EU&Product_Code=FSP1943F01

thank you very much and good luck

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1 Answer

Tv will not turn on power to unit red light on


had a very similar situation with my Phillips 42 in. LCD TV.

Here was my Problem. The Power Supply Board. I opened it up( Warranty was Expired) and found several faulty capacitors on the PSB. Its pretty common. Major Electronic companies were sold faulty capacitors that fail in 2-5 years instead of 10-20 due to a lack of preservatives. It wouldn't surprise me if you have the same problem. TV will work fine for a few years and then just fail completely or slowly deteriorate.

Here are the solutions
1. Have it Repaired
2. Check for faulty caps and if you find some(budged or leaking) you know you have located a problem
Remove the board and replace the whole thing.
3. If you have some soldering skills you can replace the faulty caps.
Caps are very inexpensive, under a dollar in most cases. I replaced 4 for about $5.00

Hope this Helps.
Good Luck

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1 Answer

T.v. turns off by itself. now the power button is flashing and unit wont turn on.


had a very similar situation with my Phillips 42 in. LCD TV.

Here was my Problem. The Power Supply Board. I opened it up( Warranty was Expired) and found several faulty capacitors on the PSB. Its pretty common. Major Electronic companies were sold faulty capacitors that fail in 2-5 years instead of 10-20 due to a lack of preservatives. It wouldn't surprise me if you have the same problem. TV will work fine for a few years and then just fail completely or slowly deteriorate.

Here are the solutions
1. Have it Repaired
2. Check for faulty caps and if you find some(budged or leaking) you know you have located a problem
Remove the board and replace the whole thing.
3. If you have some soldering skills you can replace the faulty caps.
Caps are very inexpensive, under a dollar in most cases. I replaced 4 for about $5.00

Hope this Helps.
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Faulty power supply unit?


You can contact the manufacture to purchase the power supply module.

However, there are other boards in the set that can easily cause the power supply failure because something went defective. It is also possible that the power supply is not defective, but it is in protect mode because of a failure on another board, or in some other device in the set.

The tech would follow procedure from the service manual using the proper instrumentation and diagnostics to determine the defective board(s). Then he would replace the necessary modules and or parts to get the set working again.

In the end if you try fixing this yourself, you can end up spending a few hundred dollars on a power supply and only find that it blows again or goes in to protect mode because the original fault was not determined and corrected.


Jerry G.

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