Question about Akai PT4799HD Rear Projection Television

1 Answer

TV won't come on!

Someone else posted this exact same problem with no solution. The red led light blinks, as if the TV is going to come on. It then stops and there is no picture or sound. When I hit the power button a 2nd time, I hear a faint click. When I hit the power button a 3rd time, the red led light blinks but the TV doesn't turn on. Any advice would be appreciated.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Contributor
  • 27 Answers
Re: TV won't come on!

Most likely, this is a problem with the convergence board. The convergence amps (STK392-040 x 2)are internally shorted. These can be replaced or the whole convergence board can be replaced. It's cheaper to replace the amps, but more convienent to replace the board (especially for the less electronically inclined!! :) Also, this could be from a leaking CRT. In CRT projection televisions, the red, green, and blue tube are filled with coolent (glycol). These 42" models are very bad about the tubes leaking (Akai and Samsung models)and are infamous for destroying the CRT driver board connected to the bottom of each tube. When this happens, the protection circuit kicks in and will not let the television start up. *PLEASE, FOR YOUR OWN SAKE, DO NOT FOLLOW THESE NEXT STEPS IF YOU HAVE NO UNDERSTANDING OF ELECTRONIC EQUIPMENT!!!! There are four screws and three snap clips that hold the bottom on. UNPLUG THE TELEVISION, remove the screws and pull bottom outward to remove. The bottoms of the three tubes should be visible. DON'T TOUCH THEM!! Now look under each tube. If one is leaking, there will be a wet spot (or sometimes a puddle!) underneath the tube. This will have to be serviced by a TV tech. Hope this helps...

Posted on Oct 06, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I have a sony rear projection TV model number kfws60s1 that will not turn on I press the on button and green light will flash 5 times then goes red again please help shed light into the problem pleaz

Understanding Sony Television Blinking Codes ' Techlore
Now the red light blinks 5 time while watching it. Is there any way of ..... 2006 that willnot power on and the green LED is blinking 6 times. We had a service ...

Sony KDF E55A20 - 5 Flashing Read Lights - TV Forums

Mar 17, 2012 - 14 posts - ‎4 authors
We have had a Sony KDF E55A20 since January 2006 and it has been trouble free. ...The TV will switch on fine green power lights. Then after about 20 ... If I turn off and turn on the power light will flash red 5 times. Leave it off ...

Sony TV - How to troubleshoot a red or blinking light ...

? 3:36
Apr 6, 2012 - Uploaded by SonyListens
Sony TV - How to troubleshoot a red or blinking light ... and power lights, these easy steps will help you determine what the... 5:17. Easiest TV repair - How to Fix Power [TV turns off, freezes, ... Get video URL at current time.

Dec 02, 2015 | Sony Projection Televisions

2 Answers

Tv turned itself off and started blinking red light. i unplugged tv and waited and then plugged back in and waited for the blinking green light to go off. turned tv back on and it worked all day. today...

Try removing the projection lamp and reinstalling it. After you reinstall the lamp look for a small reset button near the projection lamp compartment. Could be on the right or left side.

Apr 12, 2014 | Mitsubishi WD65737 65" DLP TV

1 Answer

TV will not turn on? Blinking LED,won't turn on? Changing back and forth from Blue and Yellow; which is on and off from panel lights?

the red picture is because the optical block is bad now this part cost about $500 plus labor , when you took the lamp out you need to put the door back otherways the tv wont wort

Jan 27, 2012 | Toshiba 62MX195 62" HDTV

1 Answer

Hi! I am experiencing the following three

Hi Rafael,

First of all thank you for posting your question here at Fixya.
Please confirm if the brand and model number above is correct.
Blinking of the the LED (yellow and blue) at the front panel indicating that the lamp door cover is not seated properly. This cover will engaged to a micro switch giving the signal to the processor, once it is in open position, the unit will not power up and will experienced that kind of blinking error code. Go back to the lamp door cover and ensure that it is properly seat-in.
3D, 2D, red/green/blue ghost on the picture and letters means that the convergence circuitry gone bad. Symptoms is not connected to the light engine. The faulty parts is the convergence chips(IC). This chips are mounted on the large aluminum heat sink and starts with STKXXXX-XX (X means number). The most common STK chips used on Projection TV's is the STK392-110. You have to replaced them both on the board to resolve the issue(red ghosting). It is necessary also to check the resistance value of the resistors around its circuitry using the multimeter. For more info how to repair a convergence problem, watch the video below.


Jan 27, 2012 | Toshiba 62MX195 62" HDTV

1 Answer

My sOny tv KF-42WE610.. Won't turn on.. I just

Please let me know how many times it will blink to determine where the exact fault came from.

Jun 17, 2011 | Sony Projection Televisions

1 Answer

Pioneer 65" TV Model # SD-643HD5 won't power up.

I would suggest replacing the board itself, chances are what caused those fuses to blow is still faulty. did you check those fuses again after you powered it back up?

Jun 12, 2011 | Pioneer Projection Televisions

1 Answer

Sony Grand Vega green light blinks on and then blinks red

Please intimate exact model of your Sony TV and also mention how many times red light blinks as there would be pause of 3 seconds in blinks so count pause to pause and let me know to find out problem.
How old is this TV and did you replaced its lamp?

Sep 14, 2009 | Sony Grand WEGA KF60WE610 60" Rear...

5 Answers

The tv will not power on

you have three small red rectangle shape object.these are fuses. looking from the back of the set right next to the flyback on the must be open, just put another fuse in or check all three.

Aug 29, 2008 | RCA HD52W59 HDTV Projection Television

Not finding what you are looking for?
Akai PT4799HD Rear Projection Television Logo

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top Akai Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers


Level 2 Expert

77 Answers

matt martin
matt martin

Level 3 Expert

1187 Answers

Are you an Akai Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides