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

1 Answer

HITACHI 50UX10B AP23 CHASSIS NO POWER

HI! I HAVE A REAR PROJECTION TV 50UX10B HITACHI, I TRY TO TURN ON THE TV BUT ONLY SOUND A LITTLE CLICK I KNOW IS THE RELAY CLICKING BUT NO WANT TO TURN ON ALL FUSES ARE OK! ON TV AND POWER BOARD. THANKS!

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  • ecasiano77 Oct 12, 2008

    help! 50ux10b ap23 chassis hitachi

  • ecasiano77 Oct 13, 2008

    hi! i not see any light in the front the green or red is not coming on, or how put the lights, or send me image for see the 2kv hv, or more information thanks!

  • ecasiano77 Oct 13, 2008

    u said in a center the chassis but in the power board or the other tv circuit because the power board is on the right hand in a corner..

  • ecasiano77 Oct 13, 2008

    ap 23 chassis

  • ecasiano77 Oct 13, 2008

    ap23 chassis 1992 hitachi 50ux10b

  • ecasiano77 Oct 13, 2008

    hi! i need more specifications because i don,t know nothing about ic or horz output transistor or send me pics or draws thanks! good i know u are smart people

  • ecasiano77 Oct 14, 2008

    THIS IS THE VOLTMETER AND THE POWER BOARD

  • ecasiano77 Oct 14, 2008

    this is the best pic i can get thanks!

  • ilarioG Apr 13, 2009

    Hi i am having the exact same problem with my hitachi 55FX48B. i've opened the back and tried to determine where the problem in the power board could be but I don't see any damage. all of the led's on the power board turn on except for one. they turn on for about 5 seconds and then they all go off and the tv dose not power up. do you have any ideas in how i can find the location of the problem area or know of any faulty componemts for this modle that i could check to see if they are in proper working condition

    Thanks for you help




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  • 38 Answers

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

  • 3 more comments 
  • dkreavis Oct 13, 2008

    if u take a picture of the inside of your tv set i will show u where u have to look tk u marty

  • dkreavis Oct 13, 2008

    ok now forget every thing i told u it is not for this chaiss ok now. u have to old syle hit ok u need to check at the horiz output transistor on the collector it is right beside the flyback the big black thing in the center of the picture u should have 130 v dc if u donot the go to the power supply on the rigt side and replace the reg ic.that should be a str30130 ic thelast numbers on the parts is the voltage that should fix this unit let me know marty.

  • dkreavis Oct 13, 2008

    ok do u have a volt meter if u dont then u can do anything at all please let me know what kind of equipment u have. now if u dont have anything this is what i would do i whould change the str it should be a str13030 it will have 5 legs on it in the power supply board on the right hand side ok. i hope this will work for u marty

  • dkreavis Oct 14, 2008

    ok please send me a close up of the power supply marty

  • dkreavis Oct 15, 2008

    ok lets do this let me look and see if i have the service diagram for that unit i think i may have one and lets do this y dont u give me a number where i can call u so we cant this fix for u i will be tide up this morning but later on today i will call u when i have the swervice diagram. i hope this will hp u marty

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