Question about Sony KV-36XBR250 TV
Set is losing sharpness on picture, you can't read end titles of movies.
if it is white brightlines along with blue back ground please check 1 sypply to blue video output transformer. 2 crt base or connector loose. 3 check components related to blue video ckt & blue video output transistor. 4 blue signal reaching to blue video section 5 verv very rare case if set is old set then there is a possibility of crt. hope this will help.
Posted on Oct 08, 2007
SOURCE: picture tube
Ibonne- firstly what is the reasoning for wanting a pix tube" do you have dark picture or poor color. generally when the tube is gone the screen changes to one color.the price of any pix tube is more than the set is worth generally.Please explain problem and maybe I can help you. cooltek Feb.15/08
Posted on Feb 15, 2008
SOURCE: blinking picture
TV Repairman came out today to look at my Sony KV-36XBR250 today with the exact same problem - he was able to adjust the settings through the service menu, but said it was a temporary fix only.
The picture tube is going and the Sony circuitry has a "video mute" that it uses when it senses the tube is not warmed up enough. The degraded state of the tube causes the blinking on and off as the signal from the tube wavers.
He ballpark estimated the tube replacement cost well above the price for replacing the set with a 37" LCD, so it's going to the dump...
Posted on Mar 13, 2008
have over 10 years experience in electronic tech
I know this isn't what you want to hear, but the problem you've described can't be fixed with troubleshooting. Your TV will have to be repaired. There is a part that has developed a defect and needs to be replaced. If you're still in warranty, the TV will be repaired at no charge to you. The warranty would likely be at least one year from the date of purchase from the manufacturer. If you purchased an extended service plan they will repair the TV at no charge as well.
If the TV is no longer in warranty, it will likely cost a minimum of $150 parts and labor. This is assuming that you only need one circuit board or small part. If the problem is more than one of the circuit boards, the price of repair could go much higher.
I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.
Please let me know if I can be of further assistance.
Posted on Jul 11, 2009
I have seen this flashing before, this could be an indication that the picture tube is weak, what happens is that if the white balance is off there is a circuit called akb it monitors the kathode of each gun and if they are not in balance it will attempt to balance it out. if it can't the picture will begin to flash, sometimes in some models the power light will blink 5 times. On some models the power light will only flash if the tv gives up trying to compinsate for white balance and shuts off compeletely. If you see the tv shutting off with 5 blinks then you know for sure it is time for a new set.
Posted on Sep 02, 2009
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