Rotel RA 12

SOURCE: the two 5 amp fuse inside the amplifier keeps blowing

Hi,

That must be the inrush current.
Maybe you are using the wrong fuses.
Please check if those are fast or slow types.
You need slow types.

Good luck,
Gerard

SOURCE: Rotel Amplifier RA-9808X

Instead of replacing you can try and clean it. There are a lot of good contact cleaners out there.

SOURCE: Are you able to provide a circuit diagram or even

I am sure I have fixed this model in the past. A lot of Rotel gear of this vintage, although sounding quite good, had been farmed out  to Taiwan for manufacture. This was back in the day before electronics came from China. But the quality of the build was often low grade, and hand assembled with custom made IC's and transistor arrays that are no longer available due to local manufacture(taiwan). Some gear was Japanese and better build quality.   Look for a 5 legged transistor (small black bodied device) device, or blackening of the legs of any  transistors(black death i call it).Is it possible to post an in focus  picture pof the internals to jog my memory on this amp. 

SOURCE: Manual circuit diagram

I don't believe that Rotel service manuals are available outside of authorized service centers. Can you provide us with the problem that you have? Perhaps we can guide you through the repair.

Thanks,
Dan