Question about Samsung HCN4727W 47" Rear Projection Television

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Curved picture top an bottom

The picture on all 4 corners seems to fill the screen. on the top and bottom centers the picture is about 1 1/2 inches short. the three guns seem to be working but the convergance is bad too.

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  • 3,459 Answers

This is a common problem. Your convergence has gone out.

Common symptoms are...

1) 3D Video
2) Warped Video
3) Convergence menu does not adjust the red or blue correctly.

Go here for a solution...

http://www.fixya.com/support/r2861627-updated_convergence_problems_amp

Posted on Sep 05, 2009

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Posted on Jan 02, 2017

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I own a Panasonic HDTV projection monitor PT-47WX42C I am having convergence/warping issues; There is a large green/red curve in the bottom rear of screen about 4 inches tall, and stretching over more...


Replace the convergence ICs they will be big black ICs and will have Part number on them example STK392-110
Mats Electronics has them for 9.95 each you will need 2 .
1-800-628-1118

Sep 10, 2010 | Panasonic PT-47WX42 47" Rear Projection...

2 Answers

Projection HDTV Pansonic 47" Curving blue and green colors on top and bottom of screen.


You will need to replace your two convergence I.C.s.They are two large IC mounted on a large aluminum heat sink.Replace both,look for any burned resistors near them,replace those if needed,and readjust your convergence. Good Luck

Let me know if you need any further help

Mar 29, 2008 | Panasonic PT-47WX42 47" Rear Projection...

1 Answer

MONITOR LIGHT STAYS BLUE, BUT NO PICTURE


Hi
If your picture wasn't pinkish or dark at the top or bottom when it was working, then it may be the inverter has gone bad. Inverters are like light bulbs and have life expectancies on the capacitors.
If your picture was pinkish or dark at the top or bottom when it was working then you may have 1 or more of the bulbs failing.

To get to the inverter:
Remove the stand.
Take the screws out of the bottom rear edge (these hold the front trim)
The the trim then unsnaps. {Be aware of the wire to the power button board on the bottom corner}
Start at the bottom and release the trim by lifting away from the glass of the screen from the center outwards to the corners, then work your way up each side bottom to top (a pocket knife or thin putty knife will help release the catches) These sides can be really tough to pop off especially the last top clip on each side.
Then unsnap the top edge (rocking it while lifting helps)
Disconnect the power button plug or unsrew the screws.
Once trim is off, remove the 4 corner screws that hold the screen in. Then the screen will lift up.
unplug the bulbs and wire to the screen (screen plug that goes into the metal case pulls out)
then the inverter is under the center area under the metal cover
Shout if you need more info.
If you email me a good picture of the inverter , I may be able to get a better idea if it is the inverter from a visual.
Fran
bammbamm@ptd.net

Dec 13, 2008 | Gateway FPD1975W 19" LCD Monitor

1 Answer

The picture is drawn in from the sides


this problem we cal vertical fault..cause by capasitor is not in good condition at vertical area or loose solder at the vertical ic

Dec 08, 2008 | RCA F35673MB 35" TV

1 Answer

Picture is warped. rca 52 inch model p52929


This is hte beginning of a convergence problem. If you can solder, try resoldering the pins on the convergence ICs. These are large black ICs attached to a heat sink and will be marked STKxxx. If that fails to resolve the problem, replace the ICs.

Keep us posted.
Dan

Aug 25, 2008 | RCA P52929 52" Rear Projection Television

1 Answer

Model 665 16874


removed and disassembled inlet water valve - minature basket filter was clogged with white particulate which felt gritty.  cleaned and reassembled and reinstalled.  Works fine now.  Idiot repairman never mentioned a filter but wanted to replace entire valve at cost of 140 dollars including service call.   sears sux bigtime. And, from my experience with Fixya, so does your service since I never heard a thing since July EXCEPT for an offer to upgrade.  Thanks for nothing.

Jul 11, 2008 | Kenmore 16602 / 16604 / 16609 Built-in...

1 Answer

Distorted picture


i was just working on a set with the same problem .. i found a east west correction curicit with a falty transistor. something in that cuircit has failed.

Jan 05, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Curved picture


ur problems is on the pincushion check for a capacitor that its bad on the pincusion section  good luck.

Nov 01, 2007 | Televison & Video

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

1 Answer

Screen split with black bar through center, top of picture shows in bottom


It sounds as you desribe, the vertical output IC and or the b+ feed capacitor off the Hi voltage transformer feeding the vert. IC its required voltage. Not a really hard job to replace, but not for a handi person to do. This should be left to the professional, as there are no user serviceable parts inside this set and with the HI voltage and the safety issues its best to call somesone to assist you with this repair. Good Luck

Jun 14, 2006 | Sanyo DS31520 31" TV

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