I have a Sony KP61HS10 tv that loses picture for a few seconds,then comes back on.Started out doing it once a day,but now does it several times an hour for longer periods of time.The sound never goes off,just picture.Anybody have an idea what it is and how to fix it?

Most possible that you are having the ddreaded dry soldering on the main board.. video drive., convergence.
Remove the rear panel and have a good look prefferably with good ligght and a magnifying glass to check for possible dry joints crested by consistent heat of componentt leads on the board. It will be good to do a solder job on the heating area of hte mainboard , particularly the sections of the IC , use a thin soldering iron with great precaution so as not to bridge the pins. Use a thin needle to clean any suspected joints, PLEASE TAKE CARE NOT TO END UP TAMPERING WITH A BRIDGING OF CIRCUITS, SO TAKE HELP IS NOT COMPETENT.
You might be able to tap softly on the board to confirm of the fault , tighten all connectors and contacts.
Take time to look into and dont rush . Finalise the spot suspected and do the soldering. Use good grade solder and wash off excess solder flux if it has flown out.
Confirm the fault and replace the back panel.