Linards Ticmanis wrote:
On 04/23/2011 03:54 PM, Steven Hirsch wrote:That's a classic symptom of having two older monitors without magnetic shielding side-by-side.What about deteriorating (or undersized) capacitors in the PSU? Couldn' they also produce such an effect? I remember once fixing a cheap indoor powered TV antenna that caused this same effect by simply soldering a decent 4700�F capacitor across the DC power-in socket.
Filter capacitors in the monitor were my next stop if the lines were not the result of external changes. Slowly moving horizontal bars or tears are the video equivalent of audio hum, with similar causes and cures. -michael NadaNet 3.1 for Apple II parallel computing! Home page: http://home.comcast.net/~mjmahon/ "The wastebasket is our most important design tool--and it's seriously underused."