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Question about Samsung TSK2792F 27" TV

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Horiz sync After about 15 minutes set loses horizontal sync. I have no service info.

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Henry Thomas

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Take the tv to a tech the tv is haqving a problem in the power and the horizontal circuit.you can get a schematic from www.samsphotofact.com

Posted on Apr 04, 2007

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THIS TV HAS BEEN GOOD TO ME BUT NOW OF LATELY ITS BEEN TURNING ON AND OFF ON ITS OWN, I UNPLUG IT FOR A FEW WEEKS AND PLUG IT BACK IN WORK FOR A WHILE BUT STARTED TO DO THE SAME THING AGAIN. PLEASE HELP.

These sets are prone to having bad solder contacts in the horizontal/flyback section of the set and they cause the symptoms you describe.
If you have done soldering and can locate the flyback and horiz. section look for bad solder contacts otherwise book a service call and ask for an estimate - The whole chassis of the set can easily removed for servicing.
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Picture goes into horizontal lines while watching then you shut it off for 10 min. or so and it resets it self

solder connections in horiz.drive/output circuit.also solder the flyback transformer.if only 10 minutes you need to solder in the
horiz.circuit area.get a magnify glass and usually will see hair line cracks around the
components.
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U have to trouble shoot for leaky capacitors in the video and horizontal circuits/Areas
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check horizontal drive tramformer for intermitance is common problem some time blows horiz transistor to or vertical IC intermintence to
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hi there, lack of horiz. width means horizontal section problem, test some electrolytic capacitor at horizontal section and try video section. ty
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RCA Guide Plus Gold Gemstar

The set tries 3 times to come on (3 blinks) if there a problem such as a short, it will cycle without turning on. Unfortunately your set is notorious for having bad flyback transformers. Most likely the horizontal output transistor is shorted as well. Common causes for your symptom are: LL05 (horiz out transformer) RCA part# 257805; TL 02 ( horiz output transistor) 2SC5148; and open connections on the printed circuit board at LL 04 and L14401 (coils) all of which can cause the horizontal output transistor to be shorted.













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Re; Model # AV27765

Wait one second here if the ic wasent producing horiz drive you wouldny be getting any picture.. Your saying the set is floating the picture side ways?? your gonna need a scope to see where your losing the horizotal sync pulse from my friend.. No insult intended but if you have no horizontal drive there would be no High voltage therefore no picture.
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