Question about Hitachi 43UWX10B 43" Rear Projection Television

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TV won't turn on. Red power button flashes then shuts off.

Had a convergence problem, and replace the IC's (STK 392-110). Now the TV won't turn on. The power button flashes 4-5 times and then shuts off.

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  • Anonymous Mar 08, 2009

    I just have a constant red blinking light with clicking sound. I trash picked this in excellent physical shape, but it will not turn on...any help would be great!

  • kasara Apr 01, 2009

    I have the exact same problem, replaced IC's and some resistors and now TV won't turn on, hear a clicking, power light flashes 6 times and then shuts down. I know the connects are correct b/c I had photo before I disconnected to soder.

    bnmdaniels - did you ever figure out how to fix?

    Thanks

  • www_kentucky Apr 10, 2009

    when pushing the power button, the TV clicks, the red light comes on, then the TV shuts back off 1-2 sec. later, with no blinking of the red light. Sounds like it wants to come on and show picture but cuts off right before. model# 50ex8k serial# val015318

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  • 3,459 Answers

Check your soldering. If you shorted two pins together the TV will shut down. This is common. Just desolder the shorted section and resolder it again. This will typicaly fix it.

Posted on Apr 08, 2009

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Did the TV work but with a convergence eproblem before you changed the STK's.? If so it is very likely you have misplaced one of the several leads when reassembling the set. It is ususally a perfect cure. Power light flashing 4 times indicates this type of problem.

Posted on Feb 21, 2009

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1 Answer

Toshiba tp50g90 projection tv, red flashing light won't turn on


FYI: WHOEVER told you 110 chips can be replaced with 120 chips is wrong.

Easy way at this point to way at this point to see if chips are the problem is to UNSOLDER AND REMOVE BOTH CHIPS. Make sure not shorted connections and power set up---set will function without the chips but look terrible.

Try Suburban Electronics for the correct chips----only safe replacement for them is the 150 chip----stk-392-110 and stk-392-120 are not interchangeable.

The blinking light indicates a short.

LET ME KNOW IF YOU HAVE QUESTIONS AS I HAVE FIXED hundreds OF THESE SETS.

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Check High voltage Block.After replacing ic's (STK convergence ic's) you need to adjust Black&White scale.Turn ALL screen adjustments to min.Turn TV on and adjust screen slowly for each gun (I would start with Red first ) when you came to point that you see red background with white lines across, at that point G2 is too high (that will cause TV to shut down,don't worry just lowered adjustment and turn tv back on) so adjust to proper voltage and do the same for each gun.After that, adjust focus for each gun (again all controls are on High Voltage Block and HVB is mounted on front of your tv after you take speaker gril out) black box with 6 controls' screen RGB, focus RGB .
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Hello

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Angel
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You need first to test the ICS, by checking for continuity the pico fuses at the base of the ICs, then replace the faulty STK.

You should trying doing it yourself only if you are a proven electronic repairer.

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