Can't say I've ever had any issue with fans.

My Hitatchi one doesn't have a fan, but it does get quite warm. I'm pretty sure my Mum's old Digihome one doesn't have a fan. My Humax 9150T does, but that only comes on for the first few seconds when it is switched on. On mine it always either slows down or stops completely (not sure which). Don't think I have ever heard it come back on during use.