Question about Hitachi 50V500 50 in. HD-Ready LCD Television

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The fan still working even if the tv set is off for a long time

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This is normal too cool the lamp inside the set.

Posted on Sep 04, 2009


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HL-S5687W looses picture and sound after heating up. When I change the channel, the picture returns. The fan is not coming on.

This does not but does in one way make some sense(I had to read your question a few times).

The key here is the fan does not turn on-----If any of the fans (lamp or others to a lesser degree do not come on: The lamp fan must come on or in a short amount of time--it should turn the set off and some have a lamp light and a temp light----

The set monitors the temperature of the lamp especially when set is turned off---it will not turn the lamp off until it cools to a specific temperature is reached----hence if set on for while and just unplugged which will kill the power to the lamp fan the lamp or even ballast that drives the lamp can be damaged.

Voltage to the fan can be measured and it must come on when set is powered up-----issue could be either fan is bad or no voltage is reaching it===most 2 wire fans will have the voltage marked on them--24vdc equals 24 volts Direct Current etc.

If a fan NEVER COMES ON (especially the large lamp fan) sooner or later something is going to get melted or fry.

Your description is a very good one but the issue is a bit rare (fan dead).

I would if there first check for voltage at the fan when set is turned on---if its there but fan not running the fan is bad.

Seen a few where dirt on the fan or even moving the fan blades made the fan kick on but by then you KNOW it is bad.

Let me know if you have questions or what you find.

May 24, 2012 | Samsung Televison & Video

2 Answers

I have a Samsung plasma tv model fp-t5894w when i turn it on it will say check fan then turn off

By Check Fan it means that the fan inside your plasma tv is not working. If the fan will not rotate the main system control will detect it show the message that fan is not working to avoid further problems. Its a fan with three wire. Two wire for power and the third on for read the status of the fan.

Just oppen the tv. Locate the fan normally you can find it on the top side. There will be one or two fans in plasma tv.

Remove the fan if its available anywhere near then replace the same with a new one. If its not avilable. The do the following.

You can see there is a spesification sticker on the fan. if you remove the sticker then you can see its bearing. Put 2 drops of any lubricating oil. Roate the fan leaf with finger for some time. Replace the sticker and fix the fan back.
I have added a video which will help you to do the same.

Then power On the tv and check is the fan failure displays again or not. If its displays the same the you should by an new fan.


Apr 03, 2012 | Samsung Televison & Video

1 Answer

Got a new lamp tv works great but wen I turn it off it has a very quiet hum is this normal also wen I turn it off blonks green for a while befor eventualy going away what dose this mean...

Hello; The noise when turning set off is likely the fan that cools the lamp down gradually. The lamp can crack if the fan does not work. Dust in the fan can also add to the noise. When the set is turned on, the microcomputer watches the lamp come up to full brightness and shows this with the LED colors. All lamps containing mercury take time to get up to full brightness.This also applies to mercury compact florescent lamps, yard lights, and even neon signs that contain mercury.

Jun 07, 2011 | Toshiba 52HM95 52" HDTV Projection...

1 Answer

Cooling fan won't turn off.

this set has more then one fan; one fan will run all the time to cool the digital circuit board---if it is the actual LAMP fan then you have a problem---the digital fan is very small and not located near the lamp.

Aug 06, 2009 | Hitachi 50V500 50 in. HD-Ready LCD...

1 Answer

I hear a small fan running even after set has been off for a long time

That fan is supposed to run.It cools the lamp after you have turned the TV off. It should eventually turn off.

Aug 01, 2009 | Toshiba 52HM95 52" HDTV Projection...

1 Answer

DLP TV Problem

hi, this is heat related and you will need to replace th enclosure fan in this unit. this will fix your heat issue. the fan has failed.


May 21, 2009 | Akai PT46DL10 46" HDTV-Ready Television

1 Answer

Hunter 52'' fan worked one morning not in afternoon?

try this. always start your fan on high. always. then set it to the speed you want. the flashing lights are, of course , telling you something. you need the owners manual. even if lowes dont sell that particular brand, they can help you find the info. you need.

Apr 04, 2009 | Hunter 52" Ceiling Fan With Light And...

3 Answers

Keeps shutting it self off


This sounds like a thermal - meaning heat - issue. It can be fairly expensive to track down this type of issue as it could be a failing component in the TV or even a small crack in solder on one of the circuit boards. Depending where you live there may be a TV repair service that can help with a minimal cost to check it out, but my instinct is that the cost to repair it will be close to or even more than purchasing a new one.

Hope this helps,


Mar 23, 2009 | AOC A42HD84 42 in. Plasma HDTV

2 Answers

Four Blink Code on SONY KDS-60A2000 Rear Projection TV

I took a can of compressed air and blew air into the larger openings. A nice cloud of dust and several puffs of air later, the tv turned on.

Sep 20, 2008 | Sony KDS55A2000 55" HDTV

1 Answer

Need a remote code that actually works!

I have never been a big fan of the universal remotes , but most of the times they do at least turn the tv on . You could possibly have a bad IR as well to . Whats your model # of the tv and what type of universal remote are you trying ?

Dec 29, 2007 | Hitachi 46W500 46 in. TV/DVD Combo

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