I have Sony Trinitron KV-TG21L70 and working fine from last 8 years but now few days back it creates problem. The problem is display disappears with flickering but sound comes sometimes not. The red light is blinking as its on standby but when I change channel it goes fine. After few minutes working it goes again in same state. Can anybody tell me what could be the reason and solution?
Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, [Exclude the model number] in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
SOURCE: Sony Trinitron Wega kv-36fs120 wont turn on, standby/timer LED flashes 9 times.
try checking the soldered joints on the main circut board that attach the larger metal components...I re-soldered aprox 40 connections and now the tv works great!
SOURCE: Sony FD Trinitron WEGA KV-32HS500...red standby light blinks 6 ti
I
have over 10 years experience in electronic tech
support.
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.
SOURCE: sony tv picture keeps flashing
You likely have bad solder connections around the tuner area. This model has a history of problems in that area or the tuner itself.
SOURCE: Sony Trinitron kv-32hs500
plug out the tv and let it stand for about 2hrs so that it can reset itself if that does not work take the set to a tech for repairs the problem is in the power supply and related circuits good luck.
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