I just bought my first tube amp, used, its a fender hot rod deluxe. First day i had it, it sounded great. Next day while im playing i start to smell some BBQing coming from the amp, before i turned it off i check to look at the back but nothing looked abnormal. I let it sit for about 45 minutes and now when i turn it on it makes crackling noises whether im playing it or not. I dont know if i just need to change the tubes or if i need to take to a tech. Some advice would be great
Thanks