Question about Akai PT4298HD Rear Projection Television

5 Answers

I need to fix the power supply

Tv won't turn on

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  • fjzepeda Jul 29, 2008

    Ineed to fix the power supply I need to know how find the capacitors on the power board

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Where can I send you the schematic diagram?

Posted on Aug 01, 2008

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Are you sure that the power supply is the problem? These sets have protection circuits built in that shutdown the power if a problem is detected. What are the symptoms of the problem? Perhaps we can walk you through the repair. Typically Akai schematics are not available outside of the repair centers.

Dan

Posted on Aug 01, 2008

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Here you can see what capacitors look like'
http://nucth.physics.wisc.edu/personnel/yamac/Phys102/capasitors2.jpg

those 4 there.
then 6 below

Posted on Jul 29, 2008

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Please try a hard reset to turn on the TV

Posted on Jul 29, 2008

  • dewan nafees ahmed Jul 29, 2008

    leave the unit plugged off from the wall power for one night

    and then again turn ON the unit

    if it comes ON then problem may be a minor one.

    else there may be any damaged capacitors in your power board.

    you will have top replace them as soon as possible before they damage more and start leaking in your power board causing a major damage.

    thank you


  • dewan nafees ahmed Jul 29, 2008

    you can find few big capacitors in the power board.

    you need to just replace them


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1 Answer

How to reset tv


hi Tracie,
is the set making a clicking noise?
is the power light flashing on the front?
or no power light at all just dead?
if the set is just dead, just put your ear to the back vents can you hear like a very faint screaming noise and can you smell and burning in the vent?
if so it just could be capacitors on the power board.
if its clicking the that will need a service kit on the power supply board.
if the power led is flashing then you will need to count how many flashers from start to finish when you first turn set on.
hope this helps.
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1 Answer

Tv won't turn on


Replace the power supply board the blinking power indicator is usually indicating the power supply needs replacement or repair. You can get the replacement power supply boards from www.tvcircuitboards.com

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1 Answer

Help new power supply will not power up.


if you had a surge, it could have damaged more than just the power supply. When you plug in the unit, does the power indicator light up??? your main board could also have damage. The main board sends a signal to wake up the power supply thus turning on the TV. If you have to replace the main board as well, it probably won' t be economical to repair the set.

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Power light is blinking and the tv won't power up.


In that case the problem of your television is the power supply.The power supply have low voltage output so that the board of your TV cannot drive,so that the TV wont turn on.The power supply have leak capacitor that may cause of abnormal voltage.The output voltage of the power supply is +5V, +12V, and +24V.So the power supply is the problem its need to repair.Thanks

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1 Answer

The tv wont power on at all


Hello,

Your TV Won't Turn On
If your TV won't turn on, you should check the power cord. Make sure that it is securely in the wall plug. Sometimes the power cord has burned out and needs to be replaced. You may also want to check the batteries in the remote to make sure that they are working properly. If otherwise
Common problem with this TV is the power supply module.
Check the power supply; look for bad caps with leaking/bulging tops, check to see if you have standby +5vdc at the power supply connector, the front red indicator will not be on if you do not have this +5vdc standby voltage due to shorted out power transistor and zener diode, if otherwise, Power supply board just die.It can be dead at anytime.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

I hope this will help to solve the problem.....

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1 Answer

When I turn the tv on it show a blue light but now the tv won't turn on and a red light keeps blinking. What should I do?


Replace the defective electrolytic caps on the power supply and/or replace power supply, check at www.partstore.com That should fix your problem.

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1 Answer

We were watching the tv and it turned off and now it won't turn back on. we have never had any problems with it before.is it worth gettinh fixed.is there a rest button?


Tv now turn on have no power to the tv at all or the tv power LED light on the tv just blinks.Tries tv unplug,replug the tv back like about an hour,that the resetting tv back to the factory setting.The tv should working again now.If not the tv power supply board it is dead that the board where the power a/c cord plug into it,tv must be repair by replacing components parts or the tv whole power supply board.The tv shop should cost u like about half of the price of a new tv.

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2 Answers

When i turn the tv on it comes up the main screen like,tv, hdmi,1 exc.then with in secounds it goes to a black screen it will not let medo anything unless i turn off and does the same thing i need help...


You have a power supply problem. Within about 32 seconds the picture drops out because the backlite transformers shutdown. Yoy will have to find a new power supply or have some one fix yours.

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