Question about Toshiba 40H80 40" Rear Projection Television
I can not get the convergence to adjust
Your symptom sounds like a damaged convergence IC.
This is a common failure for this particular television.
There are two and large IC’s that control the convergence in a big screen set. Some of the newer sets only have one. They are secured to a very large aluminum heat sink. They will have a part number stamped on them that will start with an STKXXX-XXX, like STK392-110, and they are located on the signal board (on the left as you look into the back of the set).
Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.
There are also two resistors on the front of the board located in the middle that are fusible link resistors, these should be checked for opens and replaced if they are found so.
I would suggest that you contact a service center in your area for a complete diagnosis and repair, as this type of repair can get a little tricky. But if you want to repair the set yourself, just remember to be careful. The capacitors and CRT’s can hold a charge and may shock you.
If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.
I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.
You can also try http://www.tvrepairkits.com/ , I have not tried them yet, but they do carry OEM or better parts.
I hope this information allows you to resolve this issue.
If you need further assistance please comment to this post and I will try to help you further.
Posted on Oct 03, 2009
Hello it sounds like the convergance chips may be the problem 2 big black chips connected to a metal frame called a heatsink these will be at the back of the tv get a quote from an engineer as it's a big job to do yourself hope you get it repaired
Posted on Oct 03, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Dec 11, 2012 | Televison & Video
Mar 16, 2012 | Toshiba TP55F80/81 55" Rear Projection...
Press the MENU button on the remote.
2. Press 3 to select the Screen option.
3. Press 4 to select the Adjust Projection TV option.
4. Press 4 to select the Advanced Convergence option (the
Advanced Convergence screen appears).
The green pattern is fixed. The red and blue patterns are adjusted to
the green pattern. The Red Convergence appears first by default.
5. Colored cross-hairs show the current adjustment position on the
grid. To move the cross-hairs to a different position, use the
CH+/- buttons on the remote to move the cross-hair highlight up
and down, and the VOL+/- buttons to move it right and left.
6. Use the arrow buttons to adjust the red pattern. Each press of
the arrow button makes a slight adjustment from the center of
the cross-hairs - you can press and hold the desired arrow
button to make a faster adjustment, and then make fine
adjustments with single presses of the arrow button.
7. Press the INFO button to switch to Blue convergence and follow
the steps above to adjust the blue pattern.
8. Press OK to exit. You will be asked if you want to save the
Yes Saves adjustments.
No Returns to the Advanced Convergence screen allowing
Clear Exits screen without making any changes
Note: Before you use the advanced convergence feature, you must
complete the previous steps to align the tubes
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Problem with Hitachi 51F500 51 in. Rear Projection HDTV-Ready Television
i want to learn how to do convergence on my tv its a hitachi rear projection i have problums with colors not aligning,could you lead me in the right direction ps: i don't have the remote so i
can't magic focus
Posted by ejaparks on Mar 03, 2011
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Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.
Here is an example photo....
Jul 04, 2008 | Philips Magnavox 9P6034C 60" Rear...
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