Screen shrinks monentarily then zooms in untill screen is blank, then turns off.

OK PEOPLE I GOT THE SOLUTION TO THE MAG INNOVISION LT916S GOING BLACK AFTER ANY LENGTH OF TIME BEING ON!!! I JUST REPAIRED MINE TODAY! THE PROBLEM IS THE CAPACITOR BANK IN THE POWER SUPPLY PART THERE ARE 6 CAPACITORS I HAD A FEW LEAKY ONES "NOT GOOD" THE CAPACITOR SPECS ARE AS FOLLOWS 470UF 25V 105 DEGREES C MEANING 470 MICRO FARAD/25 VOLTS I HAD A VERY HARD TIME FINDING THE 25 VOLT ONES SO I WENT WITH 470UF/35V 85 DEGREES C THEY MIGHT NOT LAST AS LONG AS THE OTHERS DUE TO THE TEMP RATING HOWEVER, IM THINKING SINCE THEY CAN HANDLE UP TO 35 VOLTS IT SHOULD EVEN OUT AND HEY, ITS WORKING SO FAR SO GOOD!! THE CAPACITORS ARE FROM UNDER A DOLLAR A PIECE TO A COUPLE BUCKS EACH. THE CAPACITORS HAVE A BOLD LINE RUNNING UP ON ONE SIDE INDICATING THE POLARITY. BOLD LINE SIDE IS "-" SIDE WITHOUT BOLD LINE ITS "+" THE POWER SUPPLY BOARD HAS THE POLARITYS STAMPED ON THE BOARD ITSELF UNDER EACH CAPACITOR. EASY 30 MINUTE FIX IF YOU ARE LEARY ABOUT SOILDERING, FIND A FRIEND THAT KNOWS HOW TO. ITS REALLY NOT THAT HARD THOUGH AND YOULL HAVE SOME DECENT ROOM TO WORK WITH. I PROMISE WHEN YOU OPEN IT UP YOU WILL ALMOST CERTAINLY SEE AT LEAST 4 OF THE 6 CAPACITORS BULDGING AT THE TOPS MAYBE EVEN LEAKING BROWNISH STUFF. DO YOURSELF A FAVOR THOUGH AND REPLACE ALL OF THEM WHILE YOUR IN THERE "THE SIX BIGGER ONES ONLY" IF ANY OF YOU NEED FURTHER HELP OR ANY OTHER QUESTIONS ABOUT THIS PROJECT PLEASE FEEL FREE TO EMAIL ME AT [email protected] I DAMN NEAR WENT CRAZY TRYING TO FIND A SOLUTION ON HOW TO FIX THIS THING SINCE I SPENT OVER 300 BUCKS FOR IT NEW. AND IM BY NO MEANS A EXPERT WHEN IT COMES TO THIS STUFF BUT I DO KNOW A FEW THINGS. AS IM SURE MOST OF YOU DO. TAKE CARE YOU ALL AND THANKS TO THE GY WHO MENTIONED SOMETHING ABOUT CAPACITORS BEING BAD IN HIS. open it up and check that 6 capacitors. mine had the lines on the screen and eventually died completly. almost certain thats whats wrong. ive had three other people tell me that thier capacitors in thier where buldging/leaking at the tops just check it out if they are your in luck cause its a easy job and cheap if you do it yourself! good luck!

Your problem is likely caused by a cold solder connection in the yoke/horizontal deflection circuit. Most likely easily repaired by most service shops.

I had a similiar issue that caused all my Microsoft applications to zoom out to 500%. It also caused PDF documents to shrink and go the the last page. The issue was caused by the Intellatype software that came with my ergonomic keyboard. The issue was resolved by disabling the zoom feature of the sofware on the zoom tab.

Question of noone?? In one of your posted solutions you mention a 'cold solder joint'. Do you think that is what may be wrong with all of these Zerox monitors?? I posted my problem here on the forum, and quite a few others seem to have experienced the same problem. I eventually sent my unit back to Calif while I visited Thailand for a month. Upon my return I had received the same unit back (via serial number). It has worked properly thus far for 6 months. But they never sent one piece of paper back with the returned unit describing the repair or whatever. I have no idea of what problem and/or how likely it is it will occur again??