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I changed the bulb. Now
Make sure that the bulb you have replaced is a genuine factory replacement. If its of a higher wattage than the previous one and is drawing more power from the ballast then the protection circuitry will kick in and turn off the tv to prevent damage.
on Feb 17, 2010
TV picture is overly red, there is no black color.
Thanks for using FixYa. From what you have described it seems that you have to
replace the convergence IC and check power resistor for leakage, if values are
not exact you have to replace them. The typical cost to get this fixed by a pro
is about $300 - and it doesn't mean that he/they will do a job better than you
do. The parts are less than $100 (about $20-$30 for the IC's) if you want to do
it yourself. Replacing only the IC's MAY solve the problem; however, many
people have also had blown resistors requiring replacement. Why would you ask
should you replace both of the IC's if only one is shot?! If one is shot the
other one is not far away and for that little price of the chips it worth
changing them both at the same time. Also the convergence board should be
checked for cracked solder. If you replace the ICs and the resistors are shot,
the ICs may blow again almost immediately, meaning you may have to do the
repair twice. Please do rate the solution if the issue is
resolved or else revert for further assistance.
on Feb 07, 2010
Why wont my tv focus it say not availible
This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
on Nov 24, 2009
I recently purchased a samsung
Please check +20 volt and -20 volt supply at CNZ03 (4 pin connector) in convergence board, coming from power supply. If any of them is missing, check pico fuses in power supply board.
Let me know your finding to move to next step.
on Nov 03, 2009
My samsung hcl4751w converg control is not
Your symptom sounds like a damaged convergence IC.There are two and large IC’s that control the convergence in a big screen set. 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.aspxAnd their phone number is a 24-Hour Order Desk: (800) 274-4666I 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 I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up) Please Note: If you cannot rate this post with the highest rating, then please do not leave any rating. I am doing this for free and I do not think that any rating other that the best is needed. If you need further assistance please comment to this post and I will try to help you further.
on Sep 27, 2009
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