lloyd@ficc.ferranti.com (greg lloyd) (10/23/90)
In article <35131@cup.portal.com>, ekalenda@cup.portal.com (Edward John Kalenda) writes: > Yes, some monitors CAN be ruined by misprogramming the Video Control chip > on the video adaptor. [The 6845 registers] must be setup properly in as > little time as possible or you risk overloading the beam control circuitry > in the monitor.... > > The main consideration seems to be the sync timing. Get it off too far and > the deflection circuits saturate, leading to possible overload of the > high voltage transformer. Yep, I have dead proof (as opposed to living proof) that monitors can fry when you don't talk to them nicely. I just fried a monochrome monitor by using a defective floppy controller card. It was weird: on every disk access the sync signals to the monitor would stop or go crazy causing awful sounds to come from the monitor. After about 15 disk accesses the monitor died and would not work at all. I should have shut down as soon as I saw what was happening. The monitor is a cheapy Samsung green screen about 4 years old. Any clues on how to fix this one? -------------------------------------------------------------------- J. Greg Lloyd Systems Application Engineering 3655 Westcenter Dr. Houston, TX 77042 lloyd@ficc.ferranti.com ph: (713) 274-5260 --------------------------------------------------------------------