52hm84 Lamp not working sometimes

It may be the lamp and be advised---if this set has the quick on feature in the menu it will shorten the life of the lamp.

If there: it does not fully turn lamp off when set is shut down--lamp is lit at about 40 percent!

Dim picture usually is the lamp.

You need to first look from the side(left) and or back to see if lamp comes on even for a few seconds.

Average life span for the model indicated (52hm84) is 2,000 hours or 2 years.

The lamp is the place to start and it is customer replaceable so if you remove it and find it damaged (shattered inside) you know what your problem is.

Let me know what you have tried.

The fault is indicative of the lamp circuit, check the lamp fittings, check the power circuit and the ballast.
If the voltage insufficiency is present from the power supply it can lead to low current and thus the lamp will not power up. Also if the replaced lamp is faulty, not of original quality or if there are connector issues, this must be rechecked.
Check all the connectors on the power supply side and the motherboard. remove and reconnect.

Yes, the color wheel is the likely culprit. There may be dust inside the set that needs to be blown out with a vaccum blower.

Hello,

Your power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

I hope this will help in solving the problem.....

Ballast board it is what powers Lamp,
Call Encompass parts Distrubtion 1-800-638-3328

It's in the menu under setup or setting.

Replace the lamp.

It is possible the lamps may be defective or that they may be the wrong replacement for this model, as it may have a different wattage setup with the ballast. If you want to try to order the TB25 lamp from a different vendor, you can order the original Toshiba replacement lamp for this model (52HM84) from a major Toshiba parts distributor at the link below:

Toshiba 52HM84 Replacement Part TB25 Lamp / Bulb

how do I change the lamp?