Trying to refocus a blue CRT

you have to keep your finger half pressed down or it will always refocus and also do a new light reading.if you keep your finger half way down and reposition it should stay locked

Try different resolutions. LCD screens have a native resolution that they look best at. Setting the screen to something else can make the screen images/icons/text seem blurry.

Right click on the desk, choose Properties, choose Seetings, and try some of the other resolutions.

Projection TV sets have two very common problems oulined below.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

• 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.
• No Audio/Video - TV Makes Chirping Sound

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Solution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


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 #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc

Common problems with rear screen projections. Either you need to refocus the alignment, or you need to have the Convergence IC's replaced. In your owners manual, it should tell you how to refocus the alignment.

not sure if this will help but you might have to replace the stk and convergance board part # BP95-00142p.. you might when after replacing that part refocus your tv... Price for part should be 100.42 plus shipping cost or try to find a tv shop near you for part number... Good luck

When you switch between objectives, you don't want to have to refocus every time. By getting a [b]microscope[/b] with objectives that are parfocal, you'll be able to move between <b>objectives<b> without much need for refocusing.

Mag light offers a lifetime warranty on most products here is thier contact info.

Warranty / Service Address: MAG Instrument, Inc.
1721 East Locust Street - 51453
Ontario, California 91761-7769 Warranty Business Hours: Monday - Friday 7:00 a.m. - 4:30 p.m. Pacific Time Warranty: Phone
Fax 909 947-1006
909 947-5041

Hope this helps You
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the convergance amplifiers have failed and need to be replaced also some resistors and pico fuse have failed as well. the amplifiers are STK392-040 you will need to have a tech replace them. this is the most common repair of rear projection TVs. the cost may vary from tech to tech but the ICs are about $60 each there are two of them and they both need to be replaced.

youre convergence ICs need to be replaced there are two of them they are both STK392-110 you can get replacement Ics and free instalation instructions at the following link.
http://servicemanuals.vstore.ca/

Hello, if you want I can supply you with the service manual, please leave your email. Best regards, Arpi