[email protected] wrote: > It's more likely that the fan is causing a power drag that is affecting > your monitor. > > A UPS may be your best bet, if you can stand the beeping when the fan > acts up. > > On 2015-06-25 17:24, Fred James wrote: >> I live on the top floor of an apartment building with a flat roof ... >> apparently under a roof top ventilation fan. >> >> My monitor, a ViewSonic flat screen LED screen, blinks and flickers >> during certain periods but only when the roof fan is running. I cannot >> tell if the interference is coming directly from the fan, or possibly >> from electric wires that may be in the wall? >> >> I have been playing with a couple sheets of aluminum foil on the wall >> behind the monitor ... maybe it is just my imagination, but that seems >> to help a little bit? And sometimes it seems that it doesn't. >> >> Any suggestions? Thank you >> Regards >> Fred James Absolutely ... UPS is/was always there (APC Back-UPS ES 750) Regards Fred James
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