Question about Samsung HLP5674W 56" Rear Projection HDTV-Ready Television

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Ballast replacement I'm finding it very difficult to replace the ballast because the screw is not in a position for me to get a screwdriver there. Are there step by step instructions available?

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  • gmoney424 Jun 16, 2008

    Thanks, but how do I remove the light engine. I was able to remove 3 screws from the ballast, but it's the 4th screw in the upper right hand corner that I can't reach. Thanks

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  • Samsung Master
  • 8,617 Answers

Its actually easier to remove the light engine in order to get to the ballast easier unless you have a flexible screw driver. i am not aware of any step by step instructions other than possibly the service manual and often those arent very explicit.

Posted on Jun 16, 2008

  • Sonny Berry
    Sonny Berry Jun 16, 2008

    send me an email to my private email and I can send you a file that may help you, its not for your model, but they are all really close to being the same.

    slinteriors@yahoo.com

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Replacing ballast


Hello,

You would need to test the voltage coming to the ballast which depending on the ballast should be at least 320V but nothing higher than 370V maybe even 380V? (if someone know the exact please post)
CAUTION DO NOT TEST THE POWER GOING FROM BALLAST TO THE LAMP ITSELF (the ignition charge is too much ~15kV)

I assume you tried a new original Philips lamp and that you replaced the lamp door cover correctly.

Dec 31, 2013 | Samsung HLN5065W 50" Rear Projection...

Tip

How to Replace the Ballast in a Samsung DLP


Fist what is a TV ballast?

A television's ballast is a device connected to the lamp that provides an electric current, keeping the lamp operational. If you have a new lamp that isn't working properly, then you will more than likely need to replace the ballast. Replacing your television's ballast is less challenging than working with other parts of a Samsung Television, and is something that you should be able to do yourself.


  1. Remove the back panel of your Samsung DLP television, and then remove the lamp.
  2. Carefully unscrew the cover sensor switch, which should be located near the bottom-right side.
  3. Remove the two screws holding the lamp connector in place and slide it out.
  4. Remove the screws holding the inside unit of the TV in place, and very carefully ease the right side out, allowing access to the ballast.
  5. Unscrew the circuit board, remove the two cables going to the existing ballast and replace it with the new ballast in the same fashion.
  6. Put the inside unit of the television back in place and screw it in.
  7. Reattach the cover sensor switch.
  8. Reinstall the lamp and screw the back panel of the television back into position.
hope it works..

this is a image of the ballast of a Samsung .


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on Mar 25, 2010 | Projection Televisions

Tip

How To Know if it is the Lamp, or Ballast, that has failed.


Hi There. This is a very common issue with most rear projection Televisions. For example, you and your loved one are watching a great, and captivating movie, but suddenly, the screen go's blank. There is a "Lamp" signal in the right or left upper corner of the screen, and its flashing. Im sure at this time, you are very upset, and your loved one is, as well. don't worry about a thing. I will explain what is actually going on in this situation. In most situations, this will be a blown lamp, but in others, this will be a failed ballast.

Ok, first we will go over a few symptoms. The first will be the "lamp"

LAMP FAILURE

The lamp has only one symptom of failure. this will be a single pop, or a faint overheated filament smell. Normally you will here a single pop before the screen will go blank. The sound may continue, in some models.

BALLAST FAILURE

The ballast is a little tricky to diagnosis, audibly. There are three main symptoms of failure here.

1. The TV will usually give a "LAMP" failure code, even when the lamp has been replaced.

2. The TV will not make the normal click noise, or surge noise during start up. The absence of the start up surge noise is one of the quickest ways to determine whether the ballast or power board are bad, other than the lamp, itself.

3. The TV will make erratic, or rapid clicking noises during start up(5 clicks for every 3 secs). This is an indication of a weak ballast. It is unable to power up the lamp.

Now. Once you are faced with this issue, I would advise to simply test the ballast. Once exposed, you can visually inspect the component's as well. I will guide you through this with my procedure below.

The Lamp, and ballast are housed in close proximity of each other in most rear projection DLP sets. There is an access panel located on the bottom rear side of the unit. Most standard Phillip head screw drivers will due. Once the screws are removed from the rear access panel, the panel can be removed, and put aside. Once the panel if removed, the internals will be exposed. The Light engine platform is where the engine, and lamp housing will be mounted. The lamp/ballast housing is slightly to the right of the light engine. It will be black, in color. Ok, gently unscrew the light engine platform screws,and separate all harness connection to the engine,before pulling the platform away form the cabinet. Make sure the wires going to the digital board are removed from the light engine Assembly, and lamp/ballast housing as well. It is very important to make sure that all wires are disconnected from the light engine, and lamp housing before the engine platform is pulled away from the unit cabinet. Ok, once the platform is removed from the unit, simply pinch the plastic clips and pull to remove the vent housing. Now, once the vent housing is removed, the ballast will be exposed. Pull the smaller connector (ballast control cables), out carefully. Be sure that you don't damage the connector or the cables. Ok, now you release the lamp housing, and remove it. It is just to the side of the ballast housing. Once the lamp housing is removed, the ballast will have a few screws holding it on the engine platform. Simply remove the ballast mounting screws, and lift up the ballast housing of the platform.

NOTE_Normally, the ballast has Two connections to the digital board and power supply. The third connector goes to the lamp. Connector one powers the ballast, while connector two, gives operation instructions to the ballast.

Ok. Once the ballast housing is removed from the platform, place it on a separate table, and remove the ballast housing screws to expose the ballast circuit board and components. This is where you will need to access a multimeter. testing is needed to confirm ballast failure. Although there are visual indications that will confirm failure, i would suggest to test as well. Observe the ballast before proceeding. If oil is leaking from the ballast, stop here and remove the ballast. Leaking oil indicates that the ballast is damaged beyond any doubt as the internal seal has been ruptured by excessive heat. This is one of the visual indicators that will require you to go ahead and replace the ballast. If there are no oil leaks visible, move on to the testing procedure. Turn the Volt Ohmmeter to "ohms" and touch the ends of the two probes together. The meter should show continuity or a direct short. Touch the probes of the meter to one of the white wires and one of the colored, blue or yellow, or any wires that comes from the ballast. This should show a short or continuous circuit. If it does not, the ballast is bad and should be replaced.

This will conclude the procedure. This will prevent you from purchasing the wrong part, when the "LAMP", code appears.

Here are a few other models that my tips will cover. HLT4675S, HLT5075S, HLT5675S, HLT6756W, HLR5067W, HLR5656W, HLR6767W, HLT5076S, HLT5676S, HLT6176S

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on Dec 02, 2009 | Samsung DLP HL-P4663W 46" Rear Projection...

1 Answer

Have checked all connections. Perfect audio. No picture. Have tried different channels. Does Akai have a recommended service depot or parts supplier in the Vancouver, Canada area? I suspect we need a lamp....


The television is actually pretty easy to check if you have a multimeter, T10 torx screwdriver or T10 socket, and a Philips screw driver. First of all remove the back cover from the television, do not worry about the screen assembly, it is flimsy but it is mounted on the inside to not go anywhere when the back cover is removed. Next remove the black voer that is mounted by 4 torx screws, the cover that has the projector part of the engine assembly sticking through, be careful not to damage the black foam rubber that is around the projector head. Once you have those two covers off, unplug the ballast power supply wire which is the white and black wire on the bottom of the ballast, the ballast is the circuit board that is mounted in front of the big fan on the right side Also has two wire coming from the top that plug into the lamp housing. With a multi meter check to see if you have power going into the ballast (TV has to be plugged in and turned on to do this step). If you have power going in then turn the television off and unplug it and and plug the power supply wire back into the ballast. Next remove the lamp which is secured into place with the one screw on the left side. See if you have power coming out. If you have power coming out than replace your lamp. If you do not have power going into the lamp than replace the ballast. If you do not have power going into the Ballast than replace the power supply which is part number DVL-U2830XC good luck in finding that part. If you have power going through to the ballast, and to the lamp and have replaced the lamp than replace the video board Part Number B0001

Dec 19, 2010 | Akai PT46DL10 46" HDTV-Ready Television

1 Answer

The lights indicated that I needed to replace my lamp. After doing so, the TV still doesn't have picture. What do I have to do to get it to work?


It is possible that the Ballast is not turning on the lamp. In past years it had been difficult to get the Ballast separate from the Optical Block but they seemed have them available. In order to replace it you will need to remove the Optical Block which is in the center. The ballast assembly is mounted on the right side of the OpticaL Block. Once the Optical Block assembly is removed, it is not difficult to replace. To order a Ballast, call 1800-631-3811. You will need the model number.
I hope this helps,
Skyassoc

Dec 10, 2010 | Toshiba 62HM95 62" DLP HDTV

1 Answer

Panasonic PT-61DLX76-K TV, no picture, red lamp indicator flashes once every five seconds. Bulb looks okay visually. Panasonic says bad ballast I need confirmation and service manual.


Hello.
Lamp should be replaced in average every 2.5 years. Bad lamp could look OK but it is not.
Replace the lamp first if it is older than 2-3 years. You have to do it in any case. If new lamp will not
work, only then you can start thinking about ballast replacement.
If you are OK with the screwdriver and you have technical skills you don't need service manual to replace ballast. You will need to remove rear cover and locate it near the lamp. It is not too hard.
Regards.
Russ.

Dec 01, 2010 | Panasonic PT-61DLX76 Television

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
remove the 4 screws holding the ballast in.remove the ballast and install the new one.

Jul 17, 2009 | Toshiba TheaterWide 52HM84 52" Rear...

1 Answer

I need simple instructions on how to replace the ballaster for a mitsubishi wd-62525


Minor point, the correct term is 'ballast' like on a fluorescent lamp.

Unplug the unit from the wall.

Remove the filter cover (from the rear, it's on the right side of the electronics cover). Remove the electronics cover (the one on the back with the fan in the center). Remove the rear metal plate (about 25 screws). Remove the right rear support bracket to gain access to the ballast area. Remove the ballast shield. Unplug the two connectors on the ballast module. Unscrew the lamp connector (2 screws). Remove the 2 screws holding the ballast in place, they're at the closer end, near the fan. Lift the closer end of the ballast board and remove (there's a hooked lip holding the other end, no screws).

Jun 13, 2009 | Mitsubishi WD-62525 62" Rear Projection...

1 Answer

How to replace lamp ballast 46hm84


Assuming you can get the part, here is the procedure to replace the lamp ballast:

1. Make sure TV is un-plugged and the lamp has cooled for at least one hour before continuing.

2. Place the TV on a flat surface with sufficient space to the rear to allow you to slide out the chassis.

3. Open and remove the lamp access door on the left-side of the TV (facing the front) by loosening the thumb screw. Behind the door you will find the lamp assembly which must be removed by loosening two screws (one on either side of the lamp base). Pull out lamp unit, careful not to touch the lamp or bump the unit. Set aside.

4. There are 13 screws that hold the lower-rear cover onto the cabinet. Use a 1/4 inch nut driver to remove these screws. Nine of them are along the top and bottom at the rear and another 4 on the left and right hand ends of the cabinet just to the rear of the front panel.

5. Next, note that the chassis is in two sections; left and right. The lamp ballast is part of the light engine assembly that is on the right chassis. You will save yourself much grief if you slide out both left and right chassis assemblies. There are 4 screws through the jack panel that hold the left-side chassis to the cabinet. Remove these screws. Also, there are two screws mounted vertically (one on either side) of the jack panel that hold the left-side chassis to the bottom of the cabinet. Remove these screws as well. Note that they are different from the other screws.

6. The right side of the chassis is held by 5 screws. First, remove the three screws that are holding the verticle metal brace and remove the brace. Note that there is a cable tie connected to this brace. Be careful not to cut or exert too much pressure on this cable tie or the cable running through it. Next, remove the remaining metal screws holding the right chassis.

7. At the top of the open cabinet just behind the metal brace that has need removed, you will see another metal screw that holds a light shield in place. This shield has several small wires that run through guides. Carefully remove these small wires from the guides remove the screw and gently remove the shield taking note how the shield is supported so you can re-install it again easily.

8. At the left side of the jack panel towards the front of the cabinet, you will notice some wire guides with wires routed through them. Carefully remove these wires from the guides so you can pull out the chassis without putting strain on the wires.

9. CAREFULLY, start to slide out both chassis sections, left and right. Be careful not to pull any wires. If you notice a wire that is becoming tight, stop and make sure you take the strain of off the wire before continuing. You will most likely not be able to fully remove both chassis. You will not have to in order to replace the ballast.

10. The ballast assembly is located in the right-rear portion of the light engine assembly. It is held on to the circuit board by four plastic posts and retaining clips, one on each corner. The projection lens is part of the light engine assembly and is exposed. DO NOT TOUCH the lens with your fingers or tools. Before you remove the ballast, you must remove a metal piece that covers the heat sink. There is one screw on each side of this cover. The one on the left is difficult to reach with your fingers so use a magnetic screwdriver if you have one. If not, use some kind of sticky substance on the point of the screw driver so the screw will lift up with it. Remove the metal cover. Next, remove the two screws that hold the brown lamp socket to it's base and carefully remove the lamp socket. Also, there is a small white cable connector on the right-rear section of the ballast that needs to be CAREFULLY removed. Do not pull by the wires; use a needle-nosed pliers to grasp the plug and gently wiggle if off the connector. Gently move the white plastic clips at each corner and lift off the ballast assembly.

11. When installing the replacement ballast, be careful to gently seat the ballast by exerting pressure only on the four corners where the posts are. In this way you won't crack the circuit board. Replace that small cable connector, the lamp socket (it's key-wayed so it cannot be installed wrong), and the metal cover over the heat sink.

12. Take you time and follow your steps in reverse order. The both sides of the chassis must be slid into the cabinet together to avoid too much tension on small wires. Notice that there is a verticle tab on the light engine chassis that must be aligned on the right side of a veticle guide that comes down from the top of the cabinet enclosure. If you do not have the tab on the right side, the chassis will not fully seat back into the cabinet. Replace the light shield, route the small wires through the guides and also those on the left side of the jack panel, replace all screws and braces.

13. Replace the lamp assembly and replace the lamp door and hand-tighten the thumb screw. The set should fire up. If it does not, the problem may be with the light engine in which case it will not be worth the expense to fix.

Good luck and take your time.

Jun 08, 2009 | Toshiba Projection Televisions

1 Answer

Won't show picture but has sound


You can have numerous problems. I have the exact same television in my shop awaiting parts because they are extremely hard to find. The service manual is useless unless you have the diagnositc software adn operational software to properly test the television, so do not attempt to buy a manual online you will waste your money. The television is actually pretty easy to check if you have a multimeter, T10 torx screwdriver or T10 socket, and a philips screw driver. First of all remove the back cover from the television, do not worry about the screen assembly, it is flimsy but it is mounted on the inside to not go anywhere when the back cover is removed. Next remove the black voer that is mounted by 4 torx screws, the cover that has the projector part of the engine assembly sticking through, be careful not to damage the black foam rubber that is around the projector head. Once you have those two covers off, unplug the ballast power supply wire which is the white and black wire on the bottom of the ballast, the ballast is the cicuit board that is mounted in front of the big fan on the right side Also has two wire coming from the top that plug into the lamp housing. With a multi meter check to see if you have power going into the ballast (TV has to be plugged in and turned on to do this step). If you have power going in then turn the television off and unplug it and and plug the power supply wire back into the ballast. Next remove the lamp which is secured into place with the one screw on the left side. See if you have power coming out. If you have power coming out than replace your lamp. If you do not have power going inot the lamp than replace the ballast. If you do not have power going into the Ballast than replace the power supply which is part number DVL-U2830XC good luck in finding that part. If you have power going through to the ballast, and to the lamp and have replaced the lamp than replace the video board Part Number B0001, good luck finding that part. If you have replaced the Video board, ballast, lamp, and power supply and it still fails part your television out and make parts available for other people because the last thing is the engine assembly which costs 2999.00, yes that number is right Two Thousand Nine Hundred and Ninety Nine Dollars. Again, parts are very hard to come by for that model and unless your a customer like that one I have that actually wants it fixed don't bother with it.

Feb 24, 2009 | Akai PT46DL10 46" HDTV-Ready Television

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