Question about Pioneer PRO-700HD 64" Rear Projection Television

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Blue lamp climbs up on a curve from center of screen

If there is text on screen from center to right side the blue curves upwards.

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Convergence sys. Usually they use STK ICs in there, replace them.


Mr Bob

Posted on Feb 07, 2008

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Samsung SP47W3HFX tv blue flickering curved line..


If the lines are slightly curved and stationary on about 2/3 of the screen its either the Blue CRT or the Blue CRT drive board which is having the problem.

Dec 19, 2009 | Televison & Video

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

Blue curved line at top of screen and yellow curved line at botto


Do you by chance have any speakers sitting on top of the tv or right beside it. Speakers are unshielded and will cause this effect.

Feb 03, 2009 | Televison & Video

1 Answer

Samsung Projection tv Blue line across the screen curving up


This set does not have a bulb. It is a tube type projection set that sounds like it has a convergence problem. Call a qualified tv repair company.

Jun 24, 2008 | Samsung - Projection TV replacement lamp...

1 Answer

Screen is curved inward on all 4 sides and there is a red, and a blue line that is curved at the top of the screen


This is a convergence problem.. possible deflection problem... you might need a tech to look at it...

Nov 19, 2007 | RCA HD56W66 56" HDTV

1 Answer

Uh oh... the colors are curved and wacky


replace the amplifier IC chips for the convergence.  part # stk392-???  could be from 040 to 120..  90% chance that'll fix it.

Oct 08, 2007 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Arched picture at bottom seperating the green and red


Your tv has a convergance failure. the convergance ic's need to be replaced. Upgraded part # STK392-150 or STK392-160. Both ic's should be replaced to prevent future failure of other colors.

May 20, 2007 | Toshiba 43H70 43" Rear Projection...

1 Answer

Descending curved line on screen


if the tv has a portal on the side open it up and make sure the screen is not out of it's track, don't set anything on top of the set it could make it happen also

Apr 13, 2007 | Samsung HCN653W 65" Rear Projection...

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