Question about Hitachi 46UX24B/25K 46" Rear Projection Television

Convergence circut I have a 46" hitachi rear projection screen tv. I know that it is the conergence that is out but I need schematics or part number to figure which one it is before I start taking it apart ant thoughts?

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raptorperf

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STK4274 IS the correct part number. 3 18 pin chips mounted to the right (looking in from the back) on heat sinks. Cross reference is NTE7187 available from www.mouser.com

Posted on Feb 20, 2010

raptorperf Feb 20, 2010

sorry, 3 ea, 15 pin not 18 sorry, 3 ea, 15 pin not 18

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Usually there are 2 convergence IC's, labeled STK392-110. Each IC has 3 channes. Each color needs to be corrected 2 ways, vertically and horizontally, so 6 channels are needed. usually one IC does red, red and haf of green while the other IC does the other half of green, blue and blue. If the red colors are off, change the IC closest to the red jack. If the blue is off, change the IC closest to the blue jack. If the green is out, you have a 50/50 shot at replacing the correct IC. It is recommended to use the STK392-150 when replacing the IC's so it might not be a bad idea to go ahead and replace both with the newer numbers.

Posted on Jun 26, 2007

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Hitachi 46f500 46 in problem double picture end two collor

This is symptom of convergence output chips failure in rear projection tv, replacement of convergence output chips will fix the problem.
Chips/ IC replacement requires soldering work in circuit board, if you are not familiar with electronics stuff fixing an soldering work, call local tv repairman to help you.
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http://servicemanuals.vstore.ca/

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Convergence circut I have a 46" hitachi rear projection screen tv. I know that it is the conergence that is out but I need schematics or part number to figure which one it is before I start taking it apart ant thoughts?

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raptorperf

Mike Longo

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Convergence circut I have a 46" hitachi rear projection screen tv. I know that it is the conergence that is out but I need schematics or part number to figure which one it is before I start taking it apart ant thoughts?

2 Answers

raptorperf

Mike Longo

Add Your Answer

Attachments: Added items

Related Questions:

Hitachi 46f500 46 in problem double picture end two collor

The screen is distorted and small (50%)when turned on...but continual operation (in excess of 5 hours), the picture size becomes normal. I have 46 inch rear projection TV...about 13 years old

Hitachi sp-46w - picture is fuzzy, ran magic focus and stops 1/2 way in the green. A code appears at the bottom right "5" any clue?

Conergence issue

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Samsung sp42w4hb Rear projection

Color out of line

Hitachi 50ux22b has dark screen and general CQ adjustment issues

Hitachi 46BX01B Convergence

Color convergence?

Not finding what you are looking for?

46UX24B/25K 46" Rear Projection Television

Hitachi 46f500 46 in problem double picture end two collor

Open Questions:

hitachi voltage regulator I read that my problem could be the voltage regulator but do not know how to locate it to replace it myself. My tv is an Hitachi 46ux24b/25k. Does anyone know how to replace this part? Thanks.

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