Top 10 Toshiba 42H81 42" Rear Projection Television Questions & Answers

it needs the hyper module replaced might as well have em do the stk packs too its too old to be a lemon the part that was replaced was not new it was in someone elses tv and had problems there too the trick is to find someone that will fix it so it lasts

Also,check micro fuses F851,F852,etc.
and with a good digital meter, check resistors feeding B+ to
convergence circuit.
I have been using Stk392-110T made by Toshiba with no re-calls.Hitachi also has an upgrade IC.
And be sure to check your soldering of IC pins--good connect,
with no short.....T.

I have a Toshiba 42H81 that has the power indicator light blinking and the TV will not turn on

The power supply is in protect mode. There is most likely a short on one of the boards, or the high voltage generator, or a scan amplifier, or the power supply itself has a failure. Without troubleshooting the set it is impossible to know.


Jerry G.

Likely to be the STK convergence chips causing a protection circuit to switch the TV off. Have you got any onscreen convergence problems (i.e, colour fringes)?

havent a clue normally only answer car questions,but if its one of them projection things then if its anything like the ones in our local bars then they have all chucked them and bought a flat screen with built in digital tv for the football on the spanish tv .Because they have all had similar problems to yours with them ,long time to work and fuzzy images and when you have a lot of scotsman and they cant see the ball you will understand why the english ended up with so many colonys ,Their violent

GO again into the customer menu and look for something that says Hall, Surround etc--I have seen this before--usually it is a setting that creates a problem where the background sounds are so loud you cannot hear the people talking......go thru every section of the menu--I be you will find this is your problem.

Let me know what you find--I am here to help people. I do not think you have a circuit problem--only some thing in the menu has been set to the wrong place.

If this has helped you, rate this solution as I do this here for FREE.

SD TECH

The most likely cause is shorted convergence chips and possibly a few pico fuses.

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 a convergenece repair kit with instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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 herehttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

The Code is 2267 or 2193 For CTF4071/CTF268/CTF3271 (DIGITREX ) Applicable to Newer SKY+/SKY+HD (Version 9 )(Rev 9) 2) Follow the sky remote programming instruction available online. For other TV Brand, please e-mail:[email protected] for instruction. A small fee of 5 GBP is applicable. Thanks

Look at some photos if they show your problem you have a convergence trouble.

Total parts cost if parts purchased on EBAY will be under 30 dollars.

I can step you through the fix but if convergence it means both of the STK-392-110 CHIPS need to be replaced.

The hard part here is getting at them--I can tell you the best way to do this as I have fixed over 1,000 sets with this kind of problem.

Other than the chips there are a few resistors around them that need to be checked--easy and they are cheap parts if needed.

Let me know your skill--I will post photo of the chips and what typical convergence problems look like.

If this information is helpful rate this solution as "very helpful" as I do this here for free.

SD TECH