Question about Akai PTH5498 54" Rear Projection HDTV-Ready Television

1 Answer

Red & green lines top and bottom and picture curve in at top and bottom

Subject says pretty much everything. Read somewhere parts should cost around $40.00. Can use a soldering gun and multi-meter

Posted by on

  • MAKANIC Dec 03, 2007

    Thanks, Can I get a play by play on where and how to replace these resistors. Will I also need to replace the convergence board? Thanks

  • MAKANIC Dec 04, 2007

    Don't know what a board location is.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 934 Answers

That all too common problem is the failure of the convergence amps in that unit which takes two STK392-040 Sanyo built Ics at board location Icz103 and Icz104 and usually one or more pico fuses and some low ohm resistors. F1018 sometimes opens due to stress but generally it's just the two 6.3 amp pico fuses and if they have opened I strongly recommend replacing them with a 6.3 amp slo-blo pico.
The low ohm resistors at RZ147, RZ146 usually show signs of heat stress and may even be burned beyond recognition. Testing at that point is almost unnecessary but will confirm their change in value. Almost always they need to be replaced.
Other than than that a good grade of solder and some heat sink compound and that's all the parts you need.. And to answer your initial question, yes about 40 bucks in parts.
Have a great day!
Bill

Posted on Dec 02, 2007

  • William Rayburn
    William Rayburn Dec 03, 2007

    Replacing the convergence board would be far more expensive that paying full bore for a technician to come out, pick the set up, repair and have it gold seal delivered...

    The resistors are out front of the convergence amps at locations RZ146 and RZ147 respectively. Do you know what a board location is? This is not an expensive repair for a qualified shop, we do sometimes three a day of various brand PTVs.

    Bill

  • William Rayburn
    William Rayburn Dec 06, 2007

    A board location is simply the component location or identifier of each component on the board. For example one of the convergence Ic's is located at Icz103, and you'll find those markings on the board at that location. IC on that particular brand are suffix labled ICZ while resistors are suffix labled RZ, as in the case of RZ146. When you loacte that resistor you'll find it in the board location RZ146...

    Bill

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a Phillips 60" rear projection TV. recently


Tv have a problems known as a convergence problems,it is dead.The tv convergence board it is dead,that why ur tv picture are R,G,B colors lines mis alignments,have colors shadows picture or 3D picture lood alike?The tv convergence board require changes 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence picture problems.The shop will cost u like $300-350 for parts and labors.

Jun 01, 2011 | Philips Televison & Video

1 Answer

My Hitachi has green curved lines at the top and bottom of the picture. Everything on the picture is either shaded in green or blue...what could be the problem?


see attached photos, if look anything like your problem it is a convergence problem; this set uses either two of the STK 392-110 OR -150 IC CHIPS for this.

If you can solder it can be a do it yourself repair, parts cost should on EBAY be under 25 dollars total.

It is a very common problem in all sets of this type.

Let me know if you have questions or need help.

SD TECH


sd_tech_13.jpg




sd_tech_14.jpg

Nov 30, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Convergence issue... I tried to manually fix it through the menu option without any luck. The convergence does curve at the top and bottom of the screen.


It seems the solder is broken in Vertical Convergence Amplifiers or it is damage internally. This model has 2 Conv. Amps: 1 for Horizontal (Red, Green and Blue) and 1 for Vertical Convergence output (Red, Green and Blue), if the convergence does curve at the top and bottom, it is because Vertical Converegence output is no good. The Conv. Amp. costs around 20 dlls. Thats why you can not fix it with the Menu option. Good luck!

Nov 13, 2009 | Philips 60PP9202 60" Rear Projection...

2 Answers

RCA 56 inch hdwidescreen


Did you use the Automatica Convergence to try and straighten it out? If that does not help, you can manually adjust the convergence.

Jul 12, 2008 | RCA HD56W58 56" TV

1 Answer

Red & green lines


Sounds like you have hardware failure in the convergence circuit. Some combination of the IC's, fuses, and/or resistors has failed. Repair cost is $250-$400 parts & labor

Dec 02, 2007 | Akai PTH5498 54" Rear Projection...

1 Answer

Blue, red and green ghosting, curves in picture


convergance amp ic bad
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Oct 30, 2007 | Mitsubishi VS-45609 TV

1 Answer

3 curved lines top & bottom/blurred picture


This indicates a convergence problem..convergence power supply probally.. however ive seen 2 other cuicits cause this ..

Sep 24, 2007 | RCA HD52W59 HDTV Projection Television

3 Answers

PT 47 convergence IC's? box? both?


Always suspect the IC's first, digital convergence prblems are actually pretty rare IC's go everyday. I'd check partsore .com Generics usually work fine, they are probably STK392-110's but check to make sure.

Apr 16, 2007 | Panasonic PT-47WX49 47" Rear Projection...

2 Answers

Green dot in middile of my screen


The green dot in the center sounds like a burn mark on one or more of the picture tubes inside the set, and the curved lines are telling me that you have a problem in the convergence circuits. The blue haze around everything white tells me you either have a lot of dust build up on the lens over the CRTs, or your picture tube(s) are very weak. If this set is over about 12 years old, I would replace it. I doubt if you will be able to get the green dot out of the picture without changing the tubes which would be VERY expensive.

Jan 05, 2007 | Philips 60PP9401 60" Rear Projection...

Not finding what you are looking for?
Akai PTH5498 54" Rear Projection HDTV-Ready Television Logo

Related Topics:

64 people viewed this question

Ask a Question

Usually answered in minutes!

Top Akai Televison & Video Experts

Jaime Hernandez

Level 3 Expert

2336 Answers

The Knight
The Knight

Level 3 Expert

75846 Answers

Marvin
Marvin

Level 3 Expert

82322 Answers

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

Answer questions

Manuals & User Guides

Loading...