Question about Televison & Video
PICTURE WITH RETRACE LINES,PICTURE DISAPEARE WHEN BRIGHTNESS FULL.SOUND OK,
Posted by Anonymous on
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Posted on Jan 02, 2017
could be but there are a few checks that need to be donr first.. Try to turn down the g2 control just a bit on the flyback transformer. If no effect unsoder the blure drive transistor on the crt board If the blue is still there that means the crt is shorted and you could try to clean the elements with a crt rejuvenator and see if that helps. If the screen goes to red and green after you disconnect the blue drive transistor then you need to check the osd drivers as well as the rgb output drive from the video IC. If the blue gun in the tube shorted or leaky I have in the past and it really works a isolation transformer that plugs in to the crt socket and the other end plugs into the crt. What this does is isolate the the gun of the crt from the filiments and thats where they get shorted or leaky but for how long it will last who knows.
Posted on Mar 26, 2006
Here are the values:
RY04 >>>> 68 ohms >>>> 1 Watt
RY04A >>> 47 ohms >>>> 0.5 watt
RY02A >>> 330 Ohms >>> 0.25 Watt.
All resistors should be 5% tolerance.
Posted on Apr 17, 2008
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