Last night, I hooked a Sansui 5000A reciever, along with a pair of Fisher XP55B speakers (8 ohms) up to my computer. I haven't done alot with stereo equipment before, but after fiddling around a bit, I got it working. Although, one of the quick action fuses was blown, so I had to run everything through one channel and set it to mono.

Anyway, I had one speaker on A, another on B, and I had sound going to both of them. I had it at a moderately loud volume, and I didn't notice any problems, it sounded excellent, much fuller than the 2.1 computer speakers I replaced. Anyway, after giving me an eargasm for 20-30 minutes, the amplifier started giving off really bad, fuzzy distortion. It was a instant thing, one second it sounded great, the next it was distorted. It sounds fine low volumes, but if I try to crank it, it freaks out. It is much worse when I try to use speaker channels A and B.

I tried moving everything from the left to the right side (switched the fuses and speaker wires), and that side seemed to be free of the problem.

So, any idea what I did? I didn't pay money for the equipment, it was in my families attic, but it sounded good, and I'm disappointed it stopped working as intended. I was reading some other threads about how the 5000A was defective or something, and it was fixed with the 5000X. Anyway, thanks for any input...

Oh, and while I don't really know how to take it apart and fix it, I do understand wattage/current/resistance, so don't be afraid to use those kinds of terms in any explanation you give, if they're useful. If you need more info from me, feel free to ask if it will help you figure out what's wrong.

Hello Welcome to AK you were using a digital output from Puter ?? ...aka computer and have you used 5000 via CD tape player ?


I got a 5000 could help ya out

Again welcome to AK

brian :smoke:

Feel the heatsinks to see if the outputs are getting hot. Perhaps saturation is occuring due to those faulty diodes on the driver boards. Could also be a driver transistor(s) breaking down.

Check this thread for info on the problems of the 5000:
http://audiokarma.org/forums/showthread.php?t=60197

Especially post 10

I may be missing something here but did you try to replace the blown fuse before you powered up? As I read it you just hooked up speakers to the left side of A and B and ran the Sui in A+B mode. I may be wrong but that would create a 4 ohm load, some Suis are not real happy with that, and at "moderate" volume could cause some heat probs. Then you switched fuses and speaker channels and had it running. Which fuse blew? I don't think you should be operating with any blown fuse even though you can. I have one and it is still running smooth—hasn't become an arc welder yet :thmbsp:.