20 Most Recent Akai PT4298HD Rear Projection Television - Page 9 Questions & Answers


Sorry no bulb issue here. theres a vertical sweep issue though. if your not a tech i wouls sugest that you find a good one as this is a solid state set and there are no user replaceable parts inside, so you cannot service yourselfs unless your trained to do so. please seek out a trained tech to assist you in this repair.

Akai PT4298HD... | Answered on Oct 04, 2008


Have you tried service convergence? If so, consider replacing the convergence board. You can get one for $75 at www.partstore.com, but if you are electrically inclined you may be able to just replace the faulty components in the board (if indeed that is the problem). You'll need a multimeter and a soldering iron and a service manual for the schematic.

Akai PT4298HD... | Answered on Sep 30, 2008


I don't have a schematic for it - I will see if one is available or for sale.

I recommend you also ask one of our best tv experts silinteriors he may have the schematic
http://www.fixya.com/users/slinteriors

Akai PT4298HD... | Answered on Aug 18, 2008


please try a hard reset to turn on the TV

Akai PT4298HD... | Answered on Aug 01, 2008


Hello lanrob!!!


Many problems are due to poor connections. Don't just check your connections, unplug the cable, clean the ends and the contacts on the components if necessary with "isopropyl (rubbing) alcohol" and if possible "reverse" the ends. Put what was at one end into the other component. Make sure that the "colours match". Red-red, Green-Green, etc. Make sure the cables are inserted all the way. Often, if the connectors are very tight, people don't insert all the way. Check every connection - don't forget the ones coming from the wall.





Regards
Smilemaker

Akai PT4298HD... | Answered on Jul 10, 2008


The convergence ICs need to be replaced both of them at the same time they are STK392-040 you can get replacment ICs at the following link and they provide free instalation instructions with pictures so you can do the repair yourself.
Heres the link.
http://servicemanuals.vstore.ca/

Akai PT4298HD... | Answered on Jul 03, 2008


You can try unplugging it for 4 hours. Like I have said you have 2 options replacing the parts that are possibly bad. Which is common on these tv's. It will run 550-1000$. Your more economically viable solution is to replace the tv.
If you need further assistance please ask.
Thanks,
Lee

Akai PT4298HD... | Answered on Jun 24, 2008


Never even remove the back panel, if you are not trained. It could be fatal for both you and the TV

Akai PT4298HD... | Answered on Jun 24, 2008


Its a convergence problem for sure ,,,if you cant move the red or blue (green is stationary) then your problem lies on the convervence module.. requiring ....mostly new output ICs like STKs your going to need a tech, for convergence is a common problem with rear projectors and requires patience and a expert to get it back just right. good luck

Akai PT4298HD... | Answered on Jun 10, 2008


Try www.retrevo.com just enter your model number they should have it free to download.

Akai PT4298HD... | Answered on Jun 10, 2008


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!! :) Hope this helps ...

Akai PT4298HD... | Answered on Jun 07, 2008


youre convergence ICs need to be replaced there are two of them STK392-040 you can get new replacement ICs and free instructions with pictures at the following link.
http://servicemanuals.vstore.ca/

Akai PT4298HD... | Answered on Jun 05, 2008


You will need to replace both STK392-040 ICs you can get replacements at the following link with free instalation instructions
http://servicemanuals.vstore.ca/

Akai PT4298HD... | Answered on Jun 04, 2008


The ICs you need are STK392-040 you will need two of them. You cant get the ICs or Radio Shack as they are specialty items. You can get them at the following link and they will provider free instalation instructions as well as free tech support just in case you need extra help. heres the link.
http://servicemanuals.vstore.ca/

Akai PT4298HD... | Answered on Jun 04, 2008


this is a common problem for all projection TVs the convergence ICs need to be replaced. Its an easy fix if you can solder. Let me know if you need further information or a link to where you can order replacements.

Akai PT4298HD... | Answered on May 21, 2008


Normally, yes.
Make sure you get the CG Board Part number:
BP94-00155A
There are other boards in this set that say convergence, but, they are not the boards you want.
Available at:
Andrewselectronics.com
Easy to replace.
Any questions, reply to this post and I will respond.

Akai PT4298HD... | Answered on May 21, 2008


If your model number is an Akai PT4298HD you need to replace both convergence ICs STK392-040 you can get replacement ICs at the following link and they provide free instalation instructions with pictures so you can do the repair yourself. Heres the link
http://servicemanuals.vstore.ca/

Akai PT4298HD... | Answered on May 17, 2008


You may need the change the coolant in the blue tube. Convergence is when the picture will look 3D Let me know if you need more information.

Akai PT4298HD... | Answered on Apr 25, 2008


Should be STK392-040............I use Panasonic brand replacements for durability.....part # C5AA00000107.....
Don't use generic IC's....they will not hold up................T.

Akai PT4298HD... | Answered on Apr 22, 2008


Someone has locked out access to functions. Possible "parental key". Check menu settings for this. If user used a password, you will need it

Akai PT4298HD... | Answered on Apr 22, 2008

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