Question about Hitachi 50UX26B/27K 50" Rear Projection Television

1 Answer

Hitachi rear projection tv 50ux10b Picture and sound would periodically go off and then come in the past few days ---Now , the Red light comes on indicating that there is power , but no more sound or picture . I tried restarting several times and even pulled out the power plug and then tried again ---several times-- If this very complicated to fix -- like does it need a new tube? --It said free or did miss it ? Thanks ,,,,,Ralph

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  • Hitachi Master
  • 75,169 Answers

Check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Pull up older posts. Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. http://electronicshelponline.blogspot.com/

Posted on Jun 02, 2017

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Posted on Jan 02, 2017

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ctf1800
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SOURCE: HITACHI 52"PROJECTION TV WITH BAD

Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

Posted on Jan 28, 2008

  • 927 Answers

SOURCE: Hitachi 50UX10B rear projection TV

Good Day, eledttech;
Symptom: NO SYNC ON MAIN PICTURE PIP OK
Cause: IX04.
Good Luck, big IRISH.

Posted on Aug 19, 2008

  • 38 Answers

SOURCE: HITACHI 50UX10B AP23 CHASSIS NO POWER

please check all the lights that are in the chassis hitachi puts led in the chassis so that if one of the lights are not working then u know that circuit is bad. now there is 2 things that hit has wroung in the units and that is a 2kv hv cap of the horiz output transistor that burns up and kill the power supply look for a small black or brown fuse it will not have glass on it it is rt behind the reg ic in the center of the chassis it allwas opens up because of the hv cap doonot run the tv without out that cap it will overload the horiz drive and will burn upo the horiz output but u have a very good ctv ther if u fix it will last u a long time and it is a very easy tv to trouble shoot.

Posted on Oct 13, 2008

mistersony
  • 320 Answers

SOURCE: Hitachi rear projection lcd lp500 series

It is likely the projection lamp is weak, causing the picture to cycle on and off. Take the lamp out and examine the reflector. If it is dull and cloudy, it's time to replace the lamp. A new lamp will have a reflector that is shiny and looks like a mirror. Be sure to rate this solution. Thanks!

Posted on Nov 08, 2008

tlm931
  • 273 Answers

SOURCE: TV PIcture and Sound Shut Down

it would appear its shutting down in a protect mode
its possible its a convergence circuit problem or something on the deflection bd
but it most likley will require some assistance from a tech that is used to working on this type of set
if you noticed when it does come on that the colors are all off line then suspect convergence circuit trouble the the green leds tell you what source is still alive there is a chart in the cabinet that will correspond with each source voltage that can lead you to tracking it down if you know what to look for and have the tools to do so

Posted on Jan 21, 2009

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Hello repko,

This looks like a problem related to your High Voltage Protection circuit. This circuit shuts the TV down when it senses a high current condition (a short in a vital circuit). It may not involve extensive repairs, but it will involve some repair work. I can give you a better diagnosis if you do a few things for me.

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1 Answer

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please check all the lights that are in the chassis hitachi puts led in the chassis so that if one of the lights are not working then u know that circuit is bad. now there is 2 things that hit has wroung in the units and that is a 2kv hv cap of the horiz output transistor that burns up and kill the power supply look for a small black or brown fuse it will not have glass on it it is rt behind the reg ic in the center of the chassis it allwas opens up because of the hv cap doonot run the tv without out that cap it will overload the horiz drive and will burn upo the horiz output but u have a very good ctv ther if u fix it will last u a long time and it is a very easy tv to trouble shoot.

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Good Day, eledttech;
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