Monitor Intereference on FM

[Eaglesbush]

Hello

Pretty much a newbie question here ..

Both my CRT Monitors iiyama 454 & 455 produce intereference with FM listening ~ iiyama suggest raising resolution to 1600 which does help improve sound ~but does not help my work

I have receiver very old Yamaha CR 400 & new Teac DAB Tuner Th300DAB and they both suffer. The computer is next to my Hi Fi stack but there is no intereference until I switch monitor on

Coax from external aerial is reasonable good quality satellite screened

Computer & monitors are plugged into wall sockets with belkin surge protectors
HiFi stuff into seperate wall sockets

Desk layout has monitor only with Computer & Hifi below desk & the Tuner is 1metre away from monitor

I would like to eliminate the problem & would consider LCD Monitor but as I need very good graphics the LCD would be very expensive
In the meantime I'd be grateful for advice

Thanks