Question about Philips 43P8341 43" Rear Projection Television

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60" philips projection - no picture

I have a 60" philips projection tv that worked fine until i moved it to the basement. i now have no picture but the volume, channel and menu's are visible. my connections are good. any ideas?

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Check to see if your collor wheel is rotating and the buld didnt blow.

Posted on Sep 03, 2009

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This site is GREAT!! In these tuff economic times sites like this help connect...


NOTE: THIS PROCEDURE DOES NOT APPLY TO RCA CHASSIS MODEL ITC222. FOR THAT MODEL CLICK HERE.


When the picture on your projection TV looks like 3D, the image bows in on all sides and red/green/blue are separated you have bad convergence ICs. They are located on the mainboard attached to a large aluminum heat sink. The heat sink could be shiny or black depending on the manufacturer. They are generally located near the rear of the High Voltage/Power supply board. The ICs are shaped like a trapezoid. I have a picture of one at the end of this tip. It is for identification purposes only, your actual part number may be different. Make sure you get the correct units.

Once you have located the ICs and heat sink look at the numbers printed on the ICs. The numbers on them should be of the form STK392-XXX. Note the number and go to http://www.encompass.com and order two. One is for horizontal and one is for vertical. You should also go to http://www.mcmelectronics.com and if you do not already own one order a good solder iron (40 watts with conical tip, temp control would be helpful), solder wick, heat sink compound, solder puller and solder.
You will need good soldering equipment and skills. Do not apply too much heat to the connections on the underside of the board or the lands will come off causing bigger problems. The secret to soldering/desoldering is to have a hot iron and concentrate on one part at a time. Keep good contact with the piece being soldered/unsoldered.

In addition you must have a clean tip to do a good job and get the soldering done in the shortest period of time. Use a good tip cleaner (looks like a kitchen scrubber) which can be purchased at the site I mentioned or a substitute you may have, steel wool or a damp cloth. All work about the same, the important part is that the tip is kept clean.

Sometimes you need to remove the heat sink to install the IC's leads due to the number, and difficulty, of getting them in the proper holes. This usually requires removing several screws from the bottom of the board or unsoldering the hold down tabs and possibly straigtening them to get them through the holes in the circuit board depending on your particular model. The ICs can be removed from the heat sinks by removing two hold down screws and prying them loose from the heat sink. This can sometimes take quite a bit of pressure.

Another problem to watch out for is bridging of the leads when resoldering the IC into the board. Before powering up the unit make absolutely certain that no leads have been soldered together or "bridged". Correct any issues. You do not need a large amount of solder on the leads. A nice round smooth connection is best. Look at some of the other solder joints to see what a good solder joint should look like.

If your eyes are like mine it would pay to purchase a pair of magnifying binoculars from the same site you can get the equipment from, http://www.mcmelectronics.com .

After replacing the ICs check all the resistors and microfuses in the area of the convergence ICs for opens. The fuses will look like resistors but no color code.

Remove the old ICs from the board and install the new ones. Be careful not to get the units too hot when installing the new ones. The heat sink compound goes on the back of the ICs in a thin coat to aid heat disapation. Don't over do it! Also clean all the old heat sink compound off the heat sink.

Once the ICs have been replaced and the unit is up and running you will need to set the convergence to align the beams. You should be familiar with this, if not the procedure should be outlined in your operations manual. If you lost your manual go to http://www.retrevo.com to get a new one for free.

If this was the only problem your unit should now look fine. While you have it apart you should clean the lenses and the mirror with a soft lint free cloth and window cleaner (no ammonia). Always spray the cloth, never spray inside the TV.

If the lines still will not converge you have a bad digital control box. Detailed intructions for removal and replacement of the digital box are located at my tip http://www.fixya.com/support/r4273935-replace_digital_convergence_box .

8520202.jpg

Example of a convergence IC. Your part # may be different.

Thanks for using FixYa.

hardrocko

on Dec 05, 2010 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

My 60" Phillips tv has a blurry picture at the bottom and the top


The convergence output IC's need to be changed. A very common problem with all projection tvs.

Jun 04, 2009 | Philips 60PP9352 60" Rear Projection...

1 Answer

No picture, no sound, power light stays on


this is a tricky one but i would say it could be a pannel inside that has gone with all the moving of the tv about you could hav just moved something inside that shouldent hv moved ( its easley done ) best thing to do is take it to a phillips dealer.

Mar 10, 2009 | Philips 60P8341 60" Rear Projection...

1 Answer

Color convergence s fine but entire picture needs to be moved to the right


Im no pro, but sounds like your mirror is misplaced or your unit is tweeked inside. I had my tv open with convergence fixed and now I am trying to match up the colors and focus to make the picture normal. Anyone have suggestions I would appreciate it also. Good luck!

May 24, 2008 | Philips 60PP9202 60" Rear Projection...

1 Answer

Disassemble Rear Projection TV


well the short answer is : Check the sides of the set see if there is a crack in the middle where you could separate them
Long answer: i would not recommend it even if it does, the screens are sensitive and could get dust inside the screen.
Never taken one apart that far. i suspect most tech don't because of the problems aligning and dust ect.. trying to get it back together.

Dec 13, 2007 | Philips 60PP9202 60" Rear Projection...

2 Answers

Scrambled picture when cable box is hooked to hdtv plugs on philips 60 inch rear projection tv


My hdtv component jacks will give a clear pic then pop back and forth into double images. Can anyone help?

Oct 03, 2007 | Philips 60PP9202 60" Rear Projection...

1 Answer

Scrambled picture when cable box is hooked to hdtv plugs on philips 60 inch rear projection tv


I have a 53inch philips that is showing pictre but showing green, red as shadows..

Oct 03, 2007 | Televison & Video

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