20 Most Recent Akai PT4298HD Rear Projection Television - Page 4 Questions & Answers

The picture is formed from three lamps in the base of the TV. These lamps have a fluid filled lens on each of them and the Glycol in this fluid degrades after time. This fluid can also have a mold or algae growing in it. Check the lamps visually first BUT DON'T touch the driver circuits ( this would be very bad for you) with them turned on and off. If you need to change the fluid, be very careful as leaks happen very easily. If you get any of this fluid onto the driver board it will damage the tracks etc VERY QUICKLY. You must replace the fluid with the correct fluid at the correct level and amount and wash your hands afterwards as Glycol is a poison. I do not think that this is an electronic fault as the orange tinting leads me towards a fluid issue.

Akai PT4298HD... | Answered on Nov 30, 2009

You have a focus/screen control box Find it and adjust the R/G/B screen drives When you first start Go to Menu turn Color off then with a mirror adjust the picture as close as you can to a black and white picture R/G/B screen drives, the little control box you are looking for will have 3 controls on top for focus and 3 controls under them for screen drives to each tube red,green,blue after you have adjusted to a black and white picture then go back and turn color on.

Akai PT4298HD... | Answered on Nov 30, 2009

I think it does,most all hdtvs have them.

Akai PT4298HD... | Answered on Nov 30, 2009

Pops' are never a good thing to hear especially from rear screen sets. Could be that one of the three CRT's went/impolded. Could also be a Capacitor that blew also. Might be best to call a RV repair shop that works on Akai's - I think Magnavox builds Akai's but that's a guess.
A/V Media Guy

Akai PT4298HD... | Answered on Nov 20, 2009

hello it sounds like convergance chip may be the trouble


Akai PT4298HD... | Answered on Nov 15, 2009

Ur high voltage have prob,it ur FBT the big block of plastic red wire solder to the deflection board.

Akai PT4298HD... | Answered on Nov 15, 2009

akai is a samsung tv. you have a defective convergence board. suggest local service center. sorry

Akai PT4298HD... | Answered on Nov 14, 2009

There might really be a problem with the unit. Try unplugging it out of the power outlet and plug it back in after 30 seconds. If your using a power box (voltage regulator), try plugging it directly to the outlet. If all nothing happens, see a local tv tech in your area. The unit could be damaged.

Akai PT4298HD... | Answered on Nov 08, 2009

Downtown off sixth street. Just kidding. This set has an a/c power supply located outside the wooden frame that secures the main and deflection circuit boards. Very seldom does this cause a problem though. The most common problem in my experience is convergence failure. Testing this is easy. The convergence board is seperate and is mounted above the others. Small pcb with large heatsink. Removing the blue wires with the red plug(I think it's a 5 pin plug) should restore power if set is in shutdown due to that failure. Then you can just try to replace that board if avail. Next problem on this set is coolant can start leaking from the tubes and go onto the circuit boards. Use a bright light and a good pair of eyes to examine the board closely, looking beneath the picture tubes for moisture or drops or corrosion on boards. Please make sure tv is disconnected from power source while testing and good luck, Russmann.

Akai PT4298HD... | Answered on Oct 13, 2009


Akai PT4298HD... | Answered on Oct 13, 2009

You have a convergence board out of adjustment or faulty the best way to tell this is to have a estimate done on it but I can tell you its a convergence issue that is not fix can get worse over time.

This is nothing we can fix over email but we can give you paid advice and that is have it looked at locally as this is a complex issue that cannot be fixed over a email system.

Please do click the ACCEPT BUTTON to accept my advice.

Expert Tv repair Guru

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

Akai PT4298HD... | Answered on Oct 12, 2009


It still can be fix, the unit need an immediate repair, a problem on the video output module has something to do with this, a burnt resistor or capacitor has to be replaced.

Hope this info helps

Akai PT4298HD... | Answered on Oct 08, 2009

On your AC power suppy Board their is a Thyrsistor heat sink Resolder it or replace it Visit on website Encompass Electronic.com or call 1-800-638-3328

Akai PT4298HD... | Answered on Oct 05, 2009

Call Encompass for Parts same as samsung cheaper just to replace boards 1-800-638-3328 power supply board will have number on it.

Akai PT4298HD... | Answered on Sep 25, 2009

Try recycling the power, Unplugg the power cord wait at least 2 mins ant then plug back in. Some times by turning it off an on rapidly will cause the microprocessor to lock up or freeze. Much like a computer does when you have to reboot it..

Akai PT4298HD... | Answered on Sep 25, 2009

Look at AC power supply board they are bad about poor solder joints resolder thyrisitor on board.

Akai PT4298HD... | Answered on Sep 16, 2009

You put the lens or tube on backawards...

Akai PT4298HD... | Answered on Sep 13, 2009

Not finding what you are looking for?
Akai PT4298HD Rear Projection Television Logo

293 questions posted

Ask a Question

Usually answered in minutes!

Top Akai Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76332 Answers


Level 3 Expert

13434 Answers


Level 3 Expert

85239 Answers

Are you an Akai Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Akai Televison & Video

  • Akai Televison & Video

Most Popular Question

when try turn our tv light blinking

  • Televison & Video