Question about Toshiba TheaterWide 52HM94 52" Rear Projection HDTV

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Toshiba 52hm94 - Bulb replaced/no picture - How to test ballast?

How can I check to see if the ballast is bad?

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  • gc01 Sep 12, 2008

    My 52HM94 seems to be going through bulbs much too quickly.



    The rated life for the bulb is 2000 hours.



    I operate the unit according to the user manual.



    The current is not cut off when I turn the unit off (the on-off indicator blinks for a few minutes after turning the unit off)



    I have had the unit 4 years and I have just installed the 5th bulb. On average, I would say that we use the unit less than 15 hours per week (780 hours per year).



    I have been told that the ballast may need replacing... Another $250 service call... Is this going to fix the problem?



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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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ctf1800
  • 4402 Answers

SOURCE: Yellow blinking status light

I would make sure you have it seated correctly into the ballest some times the connector will come undun

Posted on Jan 18, 2008

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  • 4234 Answers

SOURCE: Toshiba Ballast part number

Use the following part number: 23122468. The cost is $48.38 from TRITRONICSINC.COM
Dan

Posted on Mar 18, 2008

Slinteriors
  • 8617 Answers

SOURCE: New bulb/TV still shuts down

Its far more likely the result of the power pwb capacitors that have failed. As the 34 code will appear if the capacitors fail on the Power PWB. You can get the V26 DLP Power repair kit at the following link.with free instructions
http://servicemanuals.vstore.ca/product_info.php/pName/mitsubishi-v26-dlp-power-pwb-repair-kit/cName/repair-kits

Posted on Apr 30, 2009

mbelectronic
  • 147 Answers

SOURCE: Need to replace the ballast on a 52HM94

the ballast is a small rectangular board.it is very easy to change.remove the lamp and you
will see a plug where the lamp plugs into.remove the two screws on that plug.then
remove the 4 screws holding the ballast in.remove the ballast and install the new one.

Posted on Jul 17, 2009

Sparko1
  • 167 Answers

SOURCE: hlp5063 no picture, have tested and replaced....

The Ballast voltage should 300 volts. You may have a problem on the power board. Possibly some bad capacitors. Look for the tops of the capacitors to be domed instead of flat.

Posted on Aug 01, 2009

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Sounds like the ballast is having an issue. The ballast is easially replaced and should be available from www.tvcircuitboards.com

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I HAD THE PROBLEM OF BULB NOT TURNING ON. SOME PEOPLE SUGGESTED TO GET THE BULB CHECKED WHICH WAS ALRIGHT, SOME SUGGESTED TO CHANGE THE BALLAST WHICH WAS SMART BUT THERE WAS NO WAY TO CHECK IT OTHER THAN PUTTING A NEW ONE AND TESTING IT. I CALLED THE TECHNICIAN AND HE CHANGED IT BUT STILL NO PICTURE AND SAME CODE OF BULB NOT WORKING. THEN HE CHECKED FUSE ON POWER SUPPLY RIGHT NEXT TO WIRES BRINGING POWER SUPPLY TO BALLAST BUT IT SEEMED OK. HE DECIDED TO CHANGE IT TO SEE IF THIS FIXES THE PROBLEM AND WE CHANGED IT. WE TURNED ON THE TV AND WALLAH. SUGGESTION IS TO CHECK EVERYTHING BEFORE SPENDING MONEY ON NEW BALLAST OR BULB. 2 CENTS OF ADVICE, IT IS SOMETIMES WORTH TO BRING SOMEBODY WHO KNOWS WHAT HE/SHE IS DOING.

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Hlp5063 no picture, have tested and replaced....


The Ballast voltage should 300 volts. You may have a problem on the power board. Possibly some bad capacitors. Look for the tops of the capacitors to be domed instead of flat.

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I have a Toshiba 52HMX94 rear projection T.V., i've had it for 4 years, replacing bulb every year. I now have another new bulb, but when I turn on the T.V. i hear a buzzing noise from the rear, and then...


Hi,
Your TV requires ballast power supply board that gives you buzzing noise when TV turns ON.
Ballast supply board is available in Part Store and replacement of that board requires expertise.

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1 Answer

Need to replace the ballast on a 52HM94


the ballast is a small rectangular board.it is very easy to change.remove the lamp and you
will see a plug where the lamp plugs into.remove the two screws on that plug.then
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You have bad capacitors in the power supply that took out the regulator, or the ballast circuit is defective. Not really a repair for the novice. Good Luck

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