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Fuzzy blue shadows blurring - Televison & Video

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  • aaron676 Sep 22, 2008

    There is a blue shadow to that is off to the right of the actual picture..

  • caballosan Sep 24, 2008

    Fuzzy blue shadows blurring in the middle of the screen.



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Search for convergence problems... I have same problem. Appears that there are two chips (IC) to replace to fix problem. TV repair man cost about $400 do it yourself about $50 if youe brave..

Posted on Aug 14, 2008


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I have a pioneer tv model pro-720hd. The picture just went fuzzy and everything has a blue shadow around it. What could be wrong?

Sounds like a problem in the blue HV convergence circuit, bad yoke or IC chip that drives the yoke coils.Could also be a bad blue CRT. Look at IC901, STK392-110 and releated components in the circuit, page 97 of service manual.

Look at the


Download Service Manual here:

May 27, 2011 | Pioneer Televison & Video

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After having our tv in storage for aver a year, now it has a green shadow to it. What could be wrong/

Not sure I understand what you mean by green shadow. I would check the fluid in the green and blue CRTS and verify they are clear. I would do this if the green color seemed fuzzy or blotchy looking on the screen.

When looking on a blank screen, do you see any arc lines of either green, blue or red? If so, you would need to lower the screen voltage for that particular CRT.

Feb 14, 2011 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

My copies and prints are blurred with shadows

That was the Solution that the ink cartridge required a replacement

Aug 13, 2008 | HP OfficeJet 7310 All-In-One InkJet...

1 Answer


You need service. Sounds like the convergence is out of adjustment. As the picture is formed by a tri- gun arrangement (one for each colour), if any of them is not correctly aligned, you will see shadows on any sharp line like text, or blurring on a picture. The shadow or blurring will often be one colour i e. red, blue or green.

Mar 27, 2008 | Mitsubishi VS-45609 TV

1 Answer

Problems with my Mitsubishi hd1080

If the Blue lines are blurs or shadows, then your Convergence IC's are going or gone bad.
I have the same TV - it will be 4yrs. old in Dec. Mine started with Blue lines & shadows, then Red, Blue, Green Shadows. This is caused from over heating. The Convergence IC's have to be replaced.
I have had 3 TV Repair shops all quote me a price from $350. to $400. to repair. They all said 4 years is the usual life time for these IC's.
Replace the STK932-110amps with STK394-250-E or STK392-150 for greater reliability.
Use only Original Replacement Parts, there are some cheaper but won't last and can't take the heat.
If you are a "do-it-yourselfer" here is a link with the directions and pics.
Good Luck!

Mar 19, 2008 | Mitsubishi WS-65869 65" Rear Projection...

1 Answer

Blue color problem

same here, fuzzy blue when trying perfect focus, all other colors are sharp. I have the 2 STK392-040 package

Feb 24, 2008 | Samsung HCN4226W 42" Rear Projection...

1 Answer


Please provide all part info for verification.....Your model is
HL-R5067W.......Engine # = ? , DMD # = ?.....Possible wrong part installed or bad new parts............T.

Dec 21, 2007 | Samsung DLP HL-P5663W 56" TV

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