Hitachi 43FWX20B 43" Rear Projection Television Logo

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Posted on Aug 22, 2011
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Our tv will all of a sudden go black but we will have sound whats wrong? it is a Hitachi model # 43fwx20b

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  • Expert 136 Answers
  • Posted on Aug 22, 2011
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Bad high voltage circuit. the audio is on a different power supply circuit so you will still get sound. refer to service tech

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1helpful
1answer

Hitachi 43fwx20b started with blue lins in screen then one night pic went out still powers up but no sound or pic ,but u can hear a ticking

You need to replace the STK ICs they are big black ICs and will have Part # on them- STK392-110
Mats has ICs $9.95 1-800-628-1118
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The convergence board is bad. Replace the STK voltage regulators and any associated discolored resistors.
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I have a hitachi rptv model #43FWX20B and the picture has a red tint to it. Opened back up and red green and blue bulbs light up. red bulb stays bright while blue and green go dim to bright as tv plays....

Howdy;
Since you don't have any white lines with the red screen/picture I would say that the red bulb (CRT) is conducting too much. There is an adjustment control for that. The 'sceen' control is behind the speaker cover and service cover. Turn red screen control slightly to the left until you get a good black and white picture.

Good Luck, Big Irish.
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Hitachi Model # 43FDX11B. Will not power

Mine just developed the same problem.. did you find a solution/fix?
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Digital broadcasting

Yes, that particular model has a digital turner in it. You ARE setup for the big switch!
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Picture problem

Most likely there is a strong possiblity that the vertical scan amplifier for the observed colour channel is starting to fail. An experienced TV tech who works on your model type can fix this.

Any fault is fixable. It is a question of the amount you are willing to spend, and the avialability of parts from the manufacture.

Jerry G.

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Hitachi 43fwx20b intermittent vertical hold loss...humidity?

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:


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
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Will not turn on/ black screen

My Hitachi Tv 43fwx20b turn on but not have sound and picture
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