Kv27fs100 After set plays about 2-3 hrs the pix convergence shifts to the right of images.Will not adjust out,seems to be more of a heated up problem.if i shut tv off it takes however long it cools down before turning back on and messing up again.Im wondering about a bad focus grid causing this and my tube may be bad,is this a possibility?

Sounds like you have a parental setting on the tv that is set to only allow 2 hrs then shuts down... try going into the menu and looking for parental settings or sleep settings... if that isn't it try spacing the tv away from the wall to allow circulation... it may be over heating... next would be to get a circuit checker for the wall plug and make sure the polarity is right at the power source... you would be surprised at how many homes are wired bkwards... usually sign of this problem is electronics in your home seem to burn out with in 6 months or sooner... tester has 3 to 4 lights on the bk of it and looks like a wall plug.. costs about 5 $

1.) If the set will not adjust one of the two STK-392-560 convergence chips in this set is bad.

2.) You can buy both chips on Ebay for less than 14 dollars plus shipping.

3.) Usually, just both chips need to be replaced and the set adjusted--sometimes there will be a fuse or resistor that protects the chips bad as well.

4.) If you are able to do this repair yourself you can save a lot of money---Most shops try to charge 300-400 for this kind of repair---I have done hundreds of them and here I charge 200-250 depending on the set.

5.) If you are not able to do this yourself shop around where you live--if they say it has to go to the shop---keep looking as any good tech can do this repair right in your home--usually takes about 1 hour.

6.) The reason this kind of problem happens in all rear projection sets is the chips are mounted on heat sinks to keep them cool(metal with fins) and a white grease(heat sink compound) is applied to the metal back of each chip to quickly transfer heat---after several years from the heat the grease dries out and one of the chips cannot stay cool enough and it fails.

7.) After the chips and any other parts are replaced and the set adjusted--it should not have this problem again for several years.

I do this here for free so if this information has helped you take just a minute to give me a vote here, I am here to help people.

If you have any questions or need advice just reply to this posting here.

REGARDS, SD TECH

CHECK FOR THE SUFECE MOUNT CAPACITORS AT THE SMALL CONVERGENCE CIRCUIT BOARD

Your TV most likely has one of two possible problems.

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.

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.

try fixing the convergence 2 after your've aligned the convergence 1 - the second (accessed via the set up control) let's you adjust on 9 different axis to align the red and blue tubes to the green. you select which + sign you want to adust by pressing the corresponding number for the + ie 1 for the top left, and 9 for the lower right corner.

good luck (note - you cant change the green only the red and blue, if the whole edge is a mess try moving the image (you need to be in zoom mode, and then access the position adjustment via the pitcure set up screen.

The tv has 2 focus adjustments for each tube, mechanical and electrical.

1. Mechanical focus is set by looking at screen from back (through inspection plate on back of most samsungs) and rotating the lens assembly on CRT. loosen wing nut and turn lens assembly to go through focus and back to best position.

Put convergence pattern on screen and manually misadjust bottom red and green lines convergence so they can be seen through inspection hole.

With back cover of TV off you can usually reach your hand up beside the lens assembly to loosen the wing nut then rotate to adjust. Green is in the middle. The focus will be obvious when you rotate and look

When you are finished make sure the foam dust protector is not over any of the lens assemblies and the wing nut is tight.

2. Electrical focus - located at front of unit. the front grille/speaker cover is removed and maybe a cover over the front crt inspection hole.

In the inspection hole there is a black plastic "Focus/screen adjust Assembly" with 2 rows of 3 controls.

One row is focus and the other is screen. The middle controls are for green with R/B on either side. Usually the controls are labelled as "focus" and "screen". You want to adjust the focus controls, one for each color. Look for the focus or screen label imprinted in the plastic. Don't play with the screen settings.

With the same misadjusted convergence pattern you can see a red, blue and green line. Adjust green focus and watch green line for best focus. Do same for other 2.

Screen adjustments are very exact and delicate. The easiest way to deal with them is to turn color off in Customer adjust menu. Put any color tone adjustments in the middle (low, med, high, put at med).

You should have a b/w picture if there are no crt or other color related faults. If it is close to B/W leave screens alone.

If the pix is too green, then the green screen setting must be reduced a small amount. Do not play with these adjustments as most TV repairrers have a difficult time adjusting them.

If focus adjustments don't help then focus control or CRT may be defective. Needs expert to determine.

easyab

http://calgaryconvergencerepair.weebly.com/convergence-ics.html

So you are able to adjust? the crosshairs move left and right up and down. you might have to get a tech to adust it in service mode.

Center the controls as best you can, disregarding the pix for the moment. Then, do a mechanical setup, getting the alignment as close as you can. Now, perform the electrical setup and see what you get. If you can't get it any closer, you'll have to address the convergence probem that we suspected you have...accordianman

I am guessing that you did the convergence menu 1.CONVERGENCE MENU "MENU 2159, 4 FINE, 5 COARSE, 6 MISC
2. There are Fuses F9A04 & 05 that may be open.
3. If you do the self test do you come up with 2-2?
4. Self-test on threads here or at ctechnicians.com
5. If one or both fuses open you will need to change convergence amps and parts.(Kit)

Key Functions
7,8,9 = select R, G or B
+100,0,PRE-CH = mute R, G or B
INFO = test/normal
4 = shifts from point to line, grid move
2 = restore factory
SOURCE = H/V select
ADD/DEL = Save
S.MODE = exit
MUTE = cursor forward
P.MODE = cursor back
Volume +/- = moves convergence left or right
Channel +/- = moves convergence up or down
1 = zero's all convergence settings (ugly!)
U/D/L/R = move cursor
SELF FOCUS = saves the convergence adjustment - do before exiting

Good luck.  I let a sub-standard service joint work on mine - they replaced the OEM chips with a higher wattage equivalent, and I've had nothing but problems ever since.