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Samsung TX-R2779H Picture/Brightness Issues    
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runnonempt



Joined: 16 Mar 2009
Posts: 1
Location: Texas

PostPosted: Mon Mar 16, 2009 9:56 am    Post subject: Samsung TX-R2779H Picture/Brightness Issues Reply with quote

Good morning. This TV acts like a 'dimmer switch' at times. The picture fades darker, then it will come back normal. Then it will go brighter. It does it on Video inputs and RF and is not constant. I do not use the HDMI or components. Any idea of what I could do to repair?

Model - TX-R2779H
SVC Model - TXR2779HKX/XAA
Type - CR29Z30

Thanks.
Google

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kuhurdler



Joined: 28 Dec 2006
Posts: 2879
Location: Overland Park, KS

PostPosted: Mon Mar 16, 2009 10:36 am    Post subject: Reply with quote

sounds like the knob that adjusts the screen voltage is failing. it is probably attached to the flyback.
JTS1957



Joined: 21 Jan 2009
Posts: 2395
Location: Far, Far Away

PostPosted: Mon Mar 16, 2009 2:17 pm    Post subject: Reply with quote

CRT Filaments?
curt wolfe



Joined: 24 Feb 2009
Posts: 51

PostPosted: Mon Mar 16, 2009 3:47 pm    Post subject: Reply with quote

check for poor solder connections on high voltage transformer, also on crt socket.
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