Question about Televison & Video
The unit turns on, the display lights up, but the picture has a "Kaleidoscope" appearance, that is the colors are scrambled in a contour map fashion. I can't locate a pictorial or schematic for the unit anywhere to find out where the main video processor board is located. When the unit first started failing it had the appearance of a heat related failure in that I turned it off for 2 hours and the picture appeared normal for an ever shortening time before the kaleidoscope appearance reappeared until the kaleidoscope was permanent. Maybe if I had attacked the problem with freeze spray early on I could have located it, but now it appears I will have to dig deeper into it
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Posted on Jan 02, 2017
SOURCE: Pink screen
Is your grey scale or Black and white programming pink?? Thats an indication that the green and blue grids on the picture tube are week or that the red is over driving. First thing is take off the back of the set. Find the end of the picture tube and look at the printed curcuit board there. see if you can find and red drive controls there. Put on a black and white pic and ever so slowly rock that red drive control a little at a time till the picture looks almost normal.. If you get it to be a little \less pink then stop right there but if it starts to get a bit green or blue then try rocking those controls all back and forth till you get the bese B&W picture you can BUT BE VERY CAREFULL as there is alot of voltage on this picture tube and if your not carefull it will bite ya. Now dont be too critical as the tube is a bit weak so you probably wont get a perfact grey scale so if after a while live with it or get a new set. Good Luck.
Posted on May 02, 2006
SOURCE: Nikon Optiphot-2
You can purchase a variable power supply that will light this lamp and control its intensity if you determine that the power supply in the microscope is bad. This may be the easiest way to fix the problem. Parts for many older microscopes are no longer available and this is a common way to repair the microscope. It's also a common modification made to many laboratory instruments for research purposes. Carefully check the lampsocket as well. It's common for them to fail and replacement is the only cure. The lamp socket is not expensive.
Posted on May 22, 2008
SOURCE: SV470XVT Vizio picture freezes
Hello, This seems more like an interface problem then a board issue. Which interface are you using Component Video, HDMI or , RF(F Connector)? If you are using the RF (F Connector) there might be a problem in the tuner including the RF and IF sections on the circuit board. If you are using HDMI there might be a problem in the HDMI Integrated Circuit If you are using componente video the there might be a problem in the video circuits connected to the RCA jacks of the Component video input. If I were you I would have the take the TV back to the shop and have these items checked out, because board swapping is not the proper thing to do. I hope this helps, Thank you, Shuttle83 http://www.electron-age-technologies-llc.com
Posted on Jun 14, 2009
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