Question about Sony FD Trinitron WEGA KV-34HS420 34" TV
My Sony Trinitron KV-34HS420 will blink the standby light 3 times upon pressing the power button, then turns off. From what I've read, this is an issue with the power circuit, but can anyone give me any pointers or advice when I got try repairing this? Should I best call a certified technician instead? I do some bit of electrical work, but never on a TV before. Thanks in advance!
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Posted on Jan 02, 2017
The relay is in the power supply area. I am sure that the fault is not the relay.
It is very common that there are various components starting to go off spec from age. Most of the failures are in the scan amplifiers and power supply areas.
It is also possible that the CRT emission is too low from age. What happens is that it is on the minimum edge and this explains why the set may turn on some of the time.
When the main uPC in the set sees any potential fault conditions it will go in to a protection mode to prevent damage and to be safe. Your set is probably borderline to operate.
Considering the age of your set, I would be shopping for a new TV set.
Posted on Jul 12, 2008
SOURCE: Sony wega trinitron KV-34HS420
did a quick google got this:
blinking is the self diagnosis working.
Posted on Aug 27, 2008
Sony FD Trinition Wega KV-32HS510 Try to turn tv on -it starts then shuts off -stand by lights keeps flashing. Memory stick light flashes then goes off.
Posted on Dec 01, 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.
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Posted on Jul 11, 2009
SOURCE: sony kv-34hs429
The 6 blinks are a diagnostic code to indicate the problem circuit. I'm on the road at the moment, but will look up the code when I get to the shop. In the mean time, a few questions:
1) Does this occur all the time or just after or before a warmup period?
2) Have you noticed that this is occurring more frequently lately or did this just start?
Posted on Aug 07, 2009
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