I spent a lot of years finding the best in low cost stereo equipment. My opinion is you cannot do better than the NAD 3020. So, like was said above, if your present broken amp is an NAD 3020, get it fixed and keep it. If not, look for another one. If not look for these in this order.
1. Any NAD (For inexpensive, it's hard to beat NAD.)
2. Any Arcam (Hard to find in this price range but I I found an AVR-100 for $200. For me, it's the best sound for a cheap amp there is.)
3. Onkyo 8255 (Two channel stereo that can be had for less than $100. I gave one to my neighbor who runs a pair of floor standing Advents and the sound is very good. By the way, I would not choose an Onkyo receiver for this list -- only the two channel stereo.)
All of these are used.
John
1. Any NAD (For inexpensive, it's hard to beat NAD.)
2. Any Arcam (Hard to find in this price range but I I found an AVR-100 for $200. For me, it's the best sound for a cheap amp there is.)
3. Onkyo 8255 (Two channel stereo that can be had for less than $100. I gave one to my neighbor who runs a pair of floor standing Advents and the sound is very good. By the way, I would not choose an Onkyo receiver for this list -- only the two channel stereo.)
All of these are used.
John