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kv29 E1E problem

 
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thefixer
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PostPosted: Tue Jul 13, 2010 11:31 am    Post subject: kv29 E1E problem Reply with quote

hello every body , I have Sony kv 29 E1E .The problem is gets off after about 5 seconds.when trying to put it on i have to unplug it for about 1 minute.then always the same problem .Any idea about this .trhanks in advance.
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Pentode



Joined: 30 Oct 2007
Posts: 85
Location: Nr. Manchester (UK)

PostPosted: Tue Jul 13, 2010 6:32 pm    Post subject: Reply with quote

Usually bad soldered joints, we 'call dry joints' that are dull Grey looking with cracks around the soldered lead... but yet again could be capacitor problems.

The usual places are the power supply, line output and driver circuit and also the Frame output circuit this usually called the vertical amplifier.

There are lethal voltages inside a TV...

remember, it's the volts that jolt but the mills that kill, mills is a fraction of 1 ampere.

If in doubt leave it to a someone knowledgeable in these fields.

Dave
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thefixer
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PostPosted: Tue Jul 20, 2010 12:24 pm    Post subject: Reply with quote

[quote="Pentode"]Usually bad soldered joints, we 'call dry joints' that are dull Grey looking with cracks around the soldered lead... but yet again could be capacitor problems.

The usual places are the power supply, line output and driver circuit and also the Frame output circuit this usually called the vertical amplifier.

There are lethal voltages inside a TV...

remember, it's the volts that jolt but the mills that kill, mills is a fraction of 1 ampere.

If in doubt leave it to a someone knowledgeable in these fields.

i want to add that there is a pin in power supply written on it "PROTECT".i disconnectted it then the tv gets on always without being off in 5 minutes .but when make search nothing found.it CPU can make this this problem.
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