Question about Toshiba 57H81 57" Rear Projection Television

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I have replaced the lamp in my Toshiba model 52HMX84 and still have no picture. Could it be a tube?

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Have you checked the switch on the lamp housing has to push the switch so it can be switched on. sometimes the case does not hit it.

Posted on Oct 22, 2013

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Posted on Jan 02, 2017

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SOURCE: Toshiba 52HMX84 DLP color issues

DLP colour wheel reset tool...Goodluck not sold unless your order from Japan.

Posted on Feb 04, 2012

Anonymous

  • 1 Answer

SOURCE: toshiba 52hmx84 shutting off

When the bulb on one of these Toshiba DLP units burns out, the unit will show a blinking green and a solid red, and restart itself 8 times, then show blinking green and red lights. A replacement bulb costs about $200 and is very easy to replace. If you replace the bulb and the symptoms continue, the problem is probably the ballast. The manual and Toshiba support will direct you to an authorized service center, but if you are ambitious and want to save the expense, here are instructions for replacing the ballast yourself. First, many thanks to those of you who have done this before me and posted elsewhere. There was a request for pics of the ballast board install, so here it is.

FULL DISCLOSURE AND WARNING: YOU ARE ON YOUR OWN AND I WARRANT NOTHING FROM THESE PROCEDURES. I AM NOT A TV TECH. THERE ARE SOME VERY HIGH VOLTAGES IN THE BACK OF A TV BECAUSE OF THE LARGE CAPACITORS. BE CAREFUL. THERE ARE ALSO MANY DELICATE CABLES AND CONNECTORS IN THE BACK OF A DLP TV. PROCEED AT YOUR OWN RISK! IF YOU ARE UNCOMFORTABLE WITH ANY OF THE STEPS, CONTACT A TV TECHNICIAN IN YOUR AREA TO DO IT!

You will need:
1. A slightly long standard head Philips screwdriver.
2. A leatherman or small pair of pliers.
3. The Toshiba service manual. Refer to it often if you get lost. - download it here.
4. The ballast board (Toshiba Part Number: 23122468). I got mine from Conn's in Flordia here.
5. Some tape or a marker to label some of the cables so you don't forget what went where.
6. Patience. Lots of it. smile.gif

The Steps

1. UNPLUG THE TV! Put the TV somewhere so that you can easily get to the back of it. You'll need at least 3 ft of room behind the TV. REMOVE THE LAMP ASSEMBLY NOW.

2. Remove all of the screws on the lower part of the TV. Set the cover aside. It should look like this:

fc5ad1b1.jpg

3. To get an idea of where we're going, as you look at the back of the TV, just behind the fan and lamp assembly is the ballast board, looks like this:

a1b14510.jpg

4. Next, remove the screws from the silver brace arm in the middle and the bronze screws that hold the light engine assembly. This brace is attached to the ribbon cable by a Zip tie; you do not have to cut the Zip tie if you don't want to. Refer to the service manual if the pic below doesn't show the screws clearly, but it will be obvious when you are looking at the "light engine sled".

9b694bf2.jpg

5. Remove the bronze screw holding the plastic shield that angles down to the lamp. This screw is kind of hard to see just looking at the back of the TV, it is located up and above the ribbon cable attached to the back AV board.

18abb633.jpg

6. Using a small pair of pliers, squeeze the plastic nipples in and push the cable hangers out of the plastic shield. Remove the shield carefully from the back of the TV and set aside.

e7e5f5a9.jpg

7. Slowly and very carefully, remove the copper ribbon cable as shown. This copper ribbon cable was the hardest thing to put back in during reassembly, I kid you not. I hate that ribbon cable with all of my soul. Next, remove the yellow, blue, and red connectors as shown. If you forget where they went, the connectors are different lengths and only go to one and only one receptacle.

fd248cd9.jpg

8. Slowly and carefully, pull out the light engine assembly. There are 2 yellow leads that power the lamp assembly that you can remove if needed. To remove them, slide the rubber footing off, and you will see a very small clip, push the clip back while pulling on the lead and it will come off. If you do take the leads off, be sure to label them with a marker or some tape. Mine were quite stubborn in letting go (I didn't see the clips under the rubber footing before this posted), so I left them on. If you do leave them on, be carefull of the stress on the cable going around the lens assembly. I removed the cables from the plastic do-hickey holding onto them and moved the yellow cables to the front of the lens assembly.

8ed15863.jpg

9. Next, slowly pull out the light engine sled and turn it so that you have access to the ballast assembly, like so:

2b19530f.jpg

10. Noticing how filthy your ballast board probably is smile.gif, remove the two screws holding the ballast board.

13f0edf4.jpg

11. Now, remove the 2 connectors attached to the ballast board like so:

e2e3539a.jpg

12. Next, gently push the plastic tabs holding down the ballast board to the light engine assembly and gently push up the ballast board to loosen it from the plastic tabs grip. There are two other tabs on the other side. Now you'll now be able to remove the ballast assembly entirely to install your new board.

8d8ac6b6.jpg

13. Now, on the other side of the ballast assembly is the lamp connector. Remove the screws as shown.

ee3d4539.jpg

14. Gently turn the lamp connector towards you to remove it; notice the orientation of the connector so you install it correctly when you put the new board in.

a92acb87.jpg

15. Now, install your new board and put everything back together in reverse order. This would also be a good time to take some compressed air and blow out all of the dust in there. Take your time during reassembly and be very, very, very carefull connecting everyting back together.

16. Be sure to put the back cover on, and re-install the lamp assembly before connecting your inputs and powering back on.

17. That's it! If you did everything carefully enough, you should be enjoying your Toshiba again and just saved about $350! Congrats!

Posted on Dec 16, 2008

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1 Answer

Toshiba 52HMX84 DLP color issues


DLP colour wheel reset tool...Goodluck not sold unless your order from Japan.

Feb 04, 2012 | Toshiba Televison & Video

1 Answer

Buzzing sound, & no picture when TV is turned on-Model 52HMX84. Still have sound. Changed the lamp, did not help. I reported this problem in Sept before my warranty expired and all they did was send a...


Sorry this tv have more trouble than an average person can handle,the buzzing sound u hear that FBT-the Highvoltage Flyback Transformer 100% already dead also other possible components on the Highvoltage Deflection circuitries are dead too,must be troubleshoot by a qualify tv Tech.This tv is not going to be cheap to troubleshoot and repair by a Tv tech.The FBT alone replacement alone,will cost u like $200 already,also troubleshoothing orther electronics components cost U who Know?

Jan 10, 2011 | Toshiba 52HMX84 52" Rear Projection...

1 Answer

I get no sound or picture when i turn on my TV; the red lite blink 10 times and reset and it just keep doing that


Problem could be that the lamp has blown out or the lamp ballast has failed. Try replacing the lamp. If that does not solve the problem, you will have to have the ballast replaced. If you are handy you can do this yourself. Otherwise, it may cost upwards of $300 to have a service tech make the repair.

Jun 23, 2009 | Toshiba 52HMX84 52" Rear Projection...

1 Answer

Installed 2 new lamps, still no picture...


i had the same problem , first ? do u hear any arching noise like spark on the back of u set , if u do thats the ballast , it need to be repleace , now if there is not a spark u may have a bad light engine , need to repleace engine

May 01, 2008 | Toshiba 52HMX84 52" Rear Projection...

4 Answers

Toshiba 52HMX84 Sound no picture.


It's not a 1k Resistor but a 10k...it's the resistor R3 on the Circuit Board Part Number RPB-4434ZA (P/N: 23122468). If you don' replace the resistor you will keep burning your lamp. If you decide to replace the resistor by yourself...you should take the time to look at all the on the back of the board. This Board is made by the company Rubicon Corporation for Toshiba and it's a issue on the Toshiba DLP TV (62-52HMX84). If you don't wanna do the job yourself..bring your TV to a repair and give him the part number of the board and ask him to replace the board for you. If the price is higher than $350.00 go somewhere else...He try to fu....^&*%*%&%.

My email address is sleeper773@hotmail.com

Jan 16, 2008 | Toshiba 52HMX84 52" Rear Projection...

1 Answer

52hmx85 toshiba


yes it is, here is the advice on bulbs:

Projection TV makers charge an arm and a leg for their replacement lamps. They make it easy to do but as a result the custom lamp assy is expensive. The trick is to just buy the bulb for your model TV from any number of us aftermarket sources at a fraction of the lamp price and install it in the old lamp yourself. Really easy.
Hope ya fix it!

Jan 04, 2008 | Toshiba 52HMX84 52" Rear Projection...

2 Answers

No Picture


Was the lamp replaced? They're not always shattered inside...Sometimes they look ok and are defective.

Nov 27, 2007 | Toshiba 52HMX84 52" Rear Projection...

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