20 Most Recent Toshiba 42H81 42" Rear Projection Television - Page 3 Questions & Answers

i dont now

Hi,

May I know if the unit has a led light at the front panel when you turned it on, it may help diagnose where the fault came from.

Jdvillanueva

This is a classic switchmode power supply, shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an Toshiba, Approved Service Center, this point is very important for a good result, Always contact, their local, "Head or Local Office" Now, when you get the information you want, then you can decide as to repair of replacement. The reason we want an approved agent, is that way, all the engineers are trained on their own brand sets, they have seen almost all faults, and will get the job done quicker, and for less cost, and usually have parts on hand,
http://www.retrevo.com/support/Toshiba-42H81-TVs-manual/id/311bh747/t/2/

The blinking is an error code - it tells you what board inside the tv failed. To find the code just count the blinks between the greater pauses.
Once you know that you replace the failed board and verify the others - they might have been damaged by the failed one. But i must warn you: on such an old tv, with an old, obsolete technology (it's a CRT projection one, out of production by at least 5 years) finding part will be difficult and expensive. And since the CRT's (the small tv tubes that generate the image) use extremely high tension (about 25,000 volts) the repair should be done only by an experienced person.

what is DC voltage on "C" of transistor at turn on?

SD TECH

All projection TV sets have two very common problems. One is convergence ( 3D/Warped video or dead set) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. In some cases the TV will also not show any video. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.






Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.


TV set after fluid change



SOLUTION

You can get the correct parts, step by step photo instruction guides, and support from www.TvRepairKits.com or click here

i need battery for Sanyo Xacti CG6 lithium-iron high power SN-SL20 3.7v 1500 mAh

Hi Rico,

This is an indication of out-of-regulation in the power supply section. It was caused by leaky/dried electrolytic capacitor in that section. It will drop the supply from normal voltage and will disable the unit.It needs a little warm-up to make itself stable but the symptom will get worst. Sometimes it has a bulged/dome at the top but not all, it is better that you have a capacitor checker/tester to determine its condition. Your unit will back to normal again if the leaky capacitor is isolated.

If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work in the power supply if you don't know the safety precaution of handling it, there some stored electricity enough to hurt you with a little mistake only.

Also check if your unit is under warranty /extended warranty, avail it because the manufacturer of your unit will fix it for free. Don't open the back panel, this will void the warranty.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

Try using the component cables instead of the HDMI cable because sometimes devices may not be HDCP which is why you get no picture.

Hi powerlink_sw,
If the symptom didn't cure by convergence adjustment through the remote control, this is an indication of faulty convergence board inside. You may replace the convergence IC's and some of the resistor around because its already gone bad. You may also replace the entire convergence board for your convenient. If the board replaced with new one, your unit will back to normal again. Also, consider bad solder jointsin that area, it will do the same symptom like what you've encountered right now. Find it first and re-solder. If you don't have necessary tools and test instrument and can't do the job yourself, I would advise you to look for a qualified technician to isolate the problem.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

http://www.theplasticman.co.uk/index.php?area=calculator&gclid=COmxu8a5sKcCFcxO4QodaUQ8Pw

Try that link.

From the symptoms you describe this souncs like what toshiba describles as the "hypermodule" problem. These sets had a problem with a cuircit board known as the "hypermodule" Now in the past it was common to replace this cuircit board.. trouble was they began to run out of theml so toshiba figured out that the board could be repaired rather than replaced... TO repair such a board is quite labor intensivel it involves replacing 11 very small micro components call capacitors. I have replace them a few timesl First problem you have is removing this board take time and effort.. secound problem is these parts are very VERy small. and even the most skilled techninians need a magnifer and a very steay hand; It can be repaired but the time and skill required dramaticly add to labor cost .. it cost on average around 400 takeing several hours to complete... Well at our shop it cost that.. it varies.. my only advice is if you find someone make sure they have experience repairing the hypermodule.
this is the module. it is in a metal sheild stang vertically on main board. the tiny circles are called capacitors to fix 11 need replaced...it is so easy to damage the board.... once damage ....no replacements

bourgen,

Your convergence circuit is bad. I have a tip at

http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics

which explains the problem, how to repair it and where to get the parts at the best price.

Thanks for using FixYa and for the great rating.

hardrocko

Please do us a favor and rate this solution after reading.

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both. Repair kits with instructions are also avail from www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.





SOLUTION #1

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

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.


TV set after fluid change



SOLUTION

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

Please do us a favor and rate this solution after reading

This would be a convergence adjustment. Check your user menu on the tv. Look for an item under video settings for a something called "Converge" or "Convergence". See if you can adjust it enough to fix the problem. If not, you may need to access the service menu and adjust from there.

After some research http://www.tacp.toshiba.com/tacpassets-images/models/51hc85/docs/51hc85_om_e.pdf There is no coaxial input for this tv. Also as far as the RF Modulator you unfortunatly are trying to use that incorrectly. The RF Modulator is used to convert the RCA or Red Yellow White cables down to Coaxile, not vice versa. However if you have an old VCR or better yet a cable box you would want to hook up the cable box then enter the TV using one of the RCA jacks, HDMI Jacks, or other inputs such as Svid. But easy enough if you have a vcr you can access cable through that as well, and make sure the tv is sat to the correct channel or input to access the VCR or other item.

ll projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.






Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.


TV set after fluid change



SOLUTION

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

tboy22,

Your convergence circuitry is bad. I have a tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics which explains the problem, how to correct it as well as where to get the parts at the best price.

Thanks for using FixYa and for the great rating. Please consider a testimonial.

hardrocko

This is not a TV problem? The sd-p1600 is a portable DVD player. Are you trying to connect it to your TV? Or is you Portable DVD Player not playing?

If the screen is green then it is not the bulb. Most likely the color wheel is not turning. There is a rotating wheel that has Red, Green and Blue color segments. If the wheel is not moving then it will just show one color. This is something that can be fixed but requires a repair service center.