Speaker Fuse Going Out

[delfam]

So my right speaker fuse on my H/K 630 keeps going out, but it's only in phono and not aux or tuner. Any reasons why?

 

[Sir.Byrd]

Watch your woofers, do you have lots of low frequency rumble? If the cones are moving in and out slowly, either use a high-pass/low/rumble filter (should be one on the 630, but I haven't checked) or isolate your turntable better.

 

[GP49]

The two-transistor phono stage in most transistor receivers has a large-value electrolytic capacitor from the RIAA feedback loop to ground. It rolls off the subsonic bass response, such as warp energy. See if it has gone open on the affected channel.