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Sony KV-35v65 hv short

 
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PostPosted: Wed Jan 19, 2005 2:51 am    Post subject: Sony KV-35v65 hv short Reply with quote

Many people distribute a parts kit for this model of television. It
includes a dual power supply transistor in a single package, fusable power
supply resistor, and new HOT (Q502).

After replacing these parts the tv comes on but soon after it starts heating
up and the right side of the horizontal deflection starts to pull inward.
See this link to an actual picture of it in action
http://www.bass-x.com/sony.jpg (note that the dark area toward the bottom is
actually just a scan line, the camera was quick). If turned on soon after
going into protection, it will blow out all three parts.

Shooting some cold spray in the HOT area straightens the problem up quickly
for a minute. The only part left leading HV to ground in that area are some
high voltage film caps (C509, C527, C511, & C513). C511 is a large red
brick type which is probably the problem. I have also replaced D502, D503,
& D504 (damper diodes). See http://www.bass-x.com/sonyhot.jpg for a peek at
the schematic in this section. I am also putting the enitre schematic out
their if your an ambitious problem solver like me...
http://www.bass-x.com/sonymanual.jpg Lastly... I have resoldered everything
in the entire area after reading about numerous flyback solder flaws.

I guess I am looking for someone who might have run across this before and
remembers the repair. I am expecting it is probably a leaky/heat sesitive
cap, but could use some encouragement from someone who has been here if you
know what I mean.


Thanks!


Jerry
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PostPosted: Wed Jan 19, 2005 3:07 am    Post subject: Reply with quote

its a cap... seen this a long time ago.
my best guess is that its c511.
jsut make sure you use the correct value cap, and one with the correct volrage rating
(1.5kv+)

good luck.
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Hatessonys
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PostPosted: Wed Jun 21, 2006 11:36 am    Post subject: Re: Sony KV-35v65 hv short Reply with quote

[email protected] wrote:

After replacing these parts the tv comes on but soon after it starts heating
up and the right side of the horizontal deflection starts to pull inward.
See this link to an actual picture of it in action

I have one with the same problem.
I ordered the same damper diodes that you changed, as well as the Caps that are parallel to them. Including C511. I'm glad to see I'm not alone, and will post my results when I get the parts.
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