hey guys. a while ago, i got a ISL59885 to use as a sync seperator chip to use in a vga mod.
all works fine and dandy. recently, i got a new monitor, a polyview v398 (19" w/screen lcd), to replace my 17" crt monitor.
when i play my xbox on the new monitor, it tends to drop the picture for a second everynow and then. the circuitry for the vga mod itself is not wired into a box, rather it is just loose wiring siting behind the xbox.
this droppign of teh picture is only happeneing with the new monitor,a nd not the old one. the monitor says that the h-sync rate is 31.4kHz. the monitors sepcified range is 30-82kHz (
clicky).
what happens, is the longer i play, the more frequent this dropping of the video occurs, to the point where it is unuseable.
i figured it might be heat related, so i moved the chip to the side of the xbox, and gave it a spray with dads instant-freeze stuff (you sue to to instantly cool down electronic components). it seemed to go back to just doing it every now and then.
so teh million dollar question is; does heat on the chip reduce its effectiveness? and also, if i use the internal sync signals, would they work any better (
read the sync timing stats on this page)
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Topic: Isl59885 Sync Seperator Overheating? (Read 43 times)