Question about Hitachi 53SDX20B 53" Rear Projection Television

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Hitachi 53SDX20B Bule ghosts

Where there is a light color there is a blue Ghosts auto focus didnt work

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Re: Hitachi 53SDX20B Bule ghosts

KIT10 $29.50
Repair Kit for Hitachi convergence Chassis DP-14G
KIT10 Includes 2 pcs STK392-150 , 1 each of the following 1W axial lead fusible resistors:

Posted on Dec 05, 2007

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Set 51uwx20b, how do i fix magic flash to reset factory settings

Convergence board needs repair, google you model # and see if you can purchase a repair kit.

Nov 22, 2011 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

Colors on tv are seperating. looks like double images.

Hi, Try the auto convergence or auto focus to eliminate the problem, if this does not work, you may have to get the TV repaired, the common problem are the power amplifiers that correct the color convergence, that is why you get color shades or ghosts in the images.

Nov 29, 2010 | Hitachi 50UX57B 50" Rear Projection...

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Hitachi 53SDX20B

Hi, common issue but difficult for lay person to fix, tube sockets and spark gaps on crt boards need to be cleaned, hard to get at but most local shops have probably done more than once, if you want to attempt get back to me & I`ll explain further, video-tek

Jun 09, 2009 | Hitachi 53SDX20B 53" Rear Projection...

1 Answer

Color ghosts out of allignment

This is a convergence problem that can be as simple as poor connections on the pins of the convergence ICs or defective ICs. If you can solder and are comfortable working inside the set where there are potentially dangerous high voltages even when unplugged, you can fix this yourself.

Let me know if you wish to attempt the repair and I will post additional details and instructions.


May 05, 2009 | Projection Televisions

1 Answer

We have blue ghosts with brilliant colors

This sounds like the most common thing that fails on projection TV's, regardless of the brand. The convergence circuit has two STK392-110 IC chips mounted on heat sinks to drive the convergence yokes. They typically last anywhere from 5-10 years, then they fail. A more robust part is now available (STK392-150) as a direct drop-in replacement. My shop has installed these IC's in hundreds of projection sets and had fewer than 1% of them come back with repeat failures. Also check the following low-ohm feedback resistors to make sure they did not go out of tolerance:
  • RK42: 2.7
  • RK46: 2.2
  • RK58: 3.9
  • RK52: 3.3
  • RK50: 3.3
  • RK54: 2.2

Jan 25, 2009 | Hitachi 50UX52B/53K 50" Rear Projection...

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My tv

the tube could be weak or you may just need to have it reconverged so the color will go back in place

Jul 04, 2008 | Hitachi 43F300 43" Rear Projection...

1 Answer

Color Issues with red ghosts on screen

The suggestions listed would be relevant for 'Ghosting' by itself, however you mentioned you tried to use the crosshairs to line up the images4.gif, which implies convergence - red/green/blue image separation and/or distortion. NONE of the solutions mentioned were anywhere close to the fix for this problem - this us usually cut and dry; convergence circuit failure. Generally, STK ICs are used. (Common parts are STK392-010/020/040, STK392-110/120/150/180, etc.) Most times replacing BOTH of these chips will be enough, sometimes there will be a blown fusible resistor and/or burnt resistors near the chips themselves. If you don't implicitly know exactly what I'm talking about, don't attempt it - take it in to a repair shop. For in-shop repair, this would NOT exceed $250 (EVER) at our location, unless there was more damage done, which is a one in a hundred situation. Good luck!

Jan 10, 2008 | Hitachi 43F300 43" Rear Projection...

1 Answer

Hitachi 53SDX20B

might need convergence amps, common problem with bigscreens

Oct 31, 2007 | Hitachi 53SDX20B 53" Rear Projection...

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