20 Most Recent Toshiba TheaterWide 46HM94 46" Rear Projection HDTV Questions & Answers

If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

yes they both the same part number one is board number and other is manufacturer number, board number is what it is and manufacture number is if its in other tvs.

for a reasonable answer a model number is needed

What is the problem with your PTV? Provide more details please. Check this linkhttp://electronicshelponline.blogspot.com/ and pull up older posts there, and see whether it help you. See it in flipcard option, which can be selected from the drop down window at the left top of the display window. It might help you to search more easy. If you want any more assistance, be free to come by comment.

Replace the lamp and make sure that the lamp door is completely closed.

Hello,

Remove the TV wire from the wall plug, wait for about 30mins for TV to settle, plug it back into the wall and power on the TV and see if problem will persist.

If problem persist then problem is either from a dying lamp or a power problem. If the blinking light it green, then it means you need to replace the lamp, but if the blinking light still persist after changing the lamp, it means your TV is having a power problem.

This problem is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on.

All these can be checked on the power supply board.

But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Regards.

Check the projector setting, make sure it set at color setting. Or maybe the projector board has broken. Go to service center.

Projection sets have two very common problems.

The first common problem is convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

make sure the lamp is fully inserted and making good connection. a lot of people will forget to close the door, the tv will not function with the door open. close the door fully. unplug the tv for 2 minutes and then plug in and let it boot up for 30 seconds before you push the power button. toshiba is notorious for malfunctioning if you start hitting buttons right after you plug it back in, make sure you wait.

if this still wont fix your issue, look for the flashing leds on the front of the set. they will eventually give you an error code to go with. the tv can take up to 1 minute to come on and will try 7 times before spitting out an error.

Most likely the relay that is connected to the power switch is bad, This puts tv in the off mode but the picture still remains.

I would try leaving the TV unplugged for 30 minutes to let the TV reset itself.
If that doesn't work, most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20.

It looks like a bad capacitor in the power supply circuit.
worth the fix

Hi,
Seems Ballast Supply is not working and causing buzzing sound. It is power section that fires up Lamp in TV. Ballast supply is available in Part Store for this TV.
price of this part is bit high so please confirm that ballast supply is bad because I'm far away from TV and can guess what might be wrong upon your feedback. Local TV tech will help you to confirm.
Thanks.

Hi Often convergence problems are caused by failure of the chips on the convergence board itself no DIY im afraid unless your good with a soldering iron?

There is a convergence board located inside the set that regulates the alignment procedure. this board is malfunctioning and there is a chip set on the board that has failed. you will need to replace this board in order to restore proper convergence functions.

Very likely the lamp. Easily changed yourself.

Try using the cables that were included with your PS3, (yellow, red, white) when you see your PS3 on that input. Plug in the HDMI cable. There should be something saying that an HDMI is detected and if you want to use it. Check the HDMI input on the TV and see if you see anything. The other thing that you might want to do is do a firmware update on the PS3. sometimes there are compatibility issues with HDMI

the outer trim just pops loose behind that there are several screws the plexi is held in by those crews i believe so once you take the screws out you can clean between the two screens