Samuel Navas Posted October 20, 2013 Report Share Posted October 20, 2013 Hi chaps, Should I be concerned about the high-pitched whistling coming from the bottom of my Ultra 1 sled? What's the usual culprit? I'm running 24V from the original ultra batteries.. Thanks as always for your advice. Sam Quote Link to comment Share on other sites More sharing options...
Premium Members GerardSava Posted October 29, 2013 Premium Members Report Share Posted October 29, 2013 Are you sure it's not from the monitor? My Tiffen CRT would screech for a few minutes when it was cold. Quiet when warmed up. Try turning off the monitor and see if the noise goes away. Quote Link to comment Share on other sites More sharing options...
Premium Members Jerry Holway Posted October 29, 2013 Premium Members Report Share Posted October 29, 2013 Also try blowing dust off the tube, sometimes it's the dust "singing" - open up case AFTER removing batteries and turning monitor switch to "on" to drain off any excess voltage Quote Link to comment Share on other sites More sharing options...
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