lookin for some info now that i figered out this site

k here goes my marantz i just got it bak from the shop everything was good. threason i brought it in was cause its runnin a lil warm on the top of the screen where the amps r located the tech at the shop a long time friend of mine told me that it fine thet run very warm. so what i did was take 2 fans out of some computers wired them togetha its keepin everything cool!!!!! is there something else i should look at way its hot or just cause of the age of it