Question about Mitsubishi WD-62725 62" Rear Projection HDTV-Ready Television

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Ballast is loose and not connecting to the new lamp . . . Any suggestions?

I tried to replace the bulb and I'm having the problem you mentioned in this post regarding the ballast. It was very loose and not connecting to the new lamp. Also, it seems to have pushed back further into the compartment. Any ideas on how to secure the ballast? I don't want to mess anything up.

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Whats a bulb? whats a ballast?

try calling an expert for I don't even know what you mean.

Posted on May 24, 2008

  • larry hanson
    larry hanson May 24, 2008

    ok seems I,m behind times and an old dieing dinosaur.

    I see bulbs and lamps for sell here.. hope somebody else can clear this up before I re-educate myself.
    sorry

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New lamp worked for 2 weeks, last night would not turn in so removed lamp thinking it was burnt to send back under warranty. Lamp appeared fine so reinserted and tv surprisinly turned on. this morning...


Edwin, sounds like you might be having a problem with your Ballast. The Ballast is what fires up lamp. Typically if this is an older unit, when you replace the bulb, you will have to replace your ballast as well. It is harder to fire up a new bulb, then it is to fire up an old bulb. That's why you wouldn't notice the problem until you changed your bulb.

Mar 01, 2014 | Panasonic Projection Televisions

1 Answer

Replaced lamp broke in Sony KDS-R50XBR1 50" HDTV after 2 minutes


When you say "lamp broke", do you mean the lamp actually physically broke? (as in 'exploded'?)

Was it a Factory replacement bulb, manufactured by Sony? (did it have the Sony logo on the box?) Many "3rd party" lamps are made from inferior materials, made in inferior conditions... and produce inferior results... including what you've mentioned. If this is the case, I suggest getting a replacement, or better a refund, then get a real Sony lamp... personal experience speaking here.

Normal failure mode of the ballast is that it will usually be totally dead, probably 85% of the time. Sometimes you will see one that's struggling to output enough power to maintain proper brightness.

What you describe would be a VERY rare failure, indeed. The ballast can not really burn out the lamp, by design. It's possible the ballast could have been weak, and just now failed... if the lamp still looks to be in good physical condition, this is a possibility, though remote.

BTW... 6 years is pretty good, but it's more about operational hours. I believe those low power lamps should last 5,000 to 8,000 hours, for an original Sony lamp.

Another thing to keep in mind is the lamp cooling. If the fan that cools the lamp has failed, and for some reason the detection circuitry is not realizing that... this could be a problem. These arc lamps operate at about 1200 degrees F (internally), and require a lot of cool air to keep them from literally melting, or exploding.

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1 Answer

TB25-LMP replaced but TV will not work


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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1 Answer

What is a ballast board


The ballast is a power supply for the lamp---it produces over 10,000 volts to fire and run the lamp----when you replace the lamp the two wire plug it connects to goes direct to the Ballast.

The spark plug type wires are there for a good reason--lots of rf there.

Double check lamp went in correctly and mated with the plug it goes into.

Looking to try a ballast: Google the model number with the word ballast.

Mar 22, 2012 | Projection Televisions

2 Answers

Replaced lamp in toshiba 46hm84. still get


Hi,do you hear any strange noises? If you hear clicking or like wanting to turn on it could be the board that powers the lamp it's called the ballast.Here's the instructions to replace it :http://www.fixyourdlp.com/guides/samsung/bp47-00033a.php The ballast is the most common failure besides the lamp.The ballast is the one that displays the lamp indicator if it's not able to power bulb or if bulb is not responding.Have a blessed one!

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2 Answers

Sony KDF50E2000 lcd tv has burned out it's second bulb. Replacement bulb was OSRAM brand. It only lasted 10 months, now it won't come on. Should I be looking at the ballast or did I just get a poor...


Hi,Osram lamps average around 3000-4000 hrs.Normally 1 -1 1/2 yr.I do think the lamp went out.The ballast is a possibility,when it's going bad it will make clicking noises or attempts to light the bulb.I recommend to get the Original Philips lamp for they average 6000-8000 hrs 3-4 yrs.

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1 Answer

Mitsubishi 52525 TV Red Lamp LED


340v should be on power pwb plug PL on the 1 and
5 (GND) pins for the ballast. and the ballast plug CN should also have the 340V with pin 1 of that plug being GND nd pin 3 should have the 340V If the PL plug on the power board is low the power pwb has a problem most likely the doubler circuit. If CN plug voltage is high say 360V the ballast is suspect.

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I have some proble dlp tv I put new lamp;put the problem didnt whant away

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2 Answers

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I have sangsun DLP with many point in all picture how canI resolv problem?

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