A few years ago I purchased the Klipsh Promedia 2.1 speaker system for use with my computer. All worked great until two days ago when I noticed a loud hum emanating from the sub woofer.
I did some trouble shooting which determined the following:
1. The humming is noticed as soon as the power is turned on. It does not change in volume as the volume control for the sats or sub are increased/ decreased.
2. I have tried plugging it into other outlets, which did not help.
3. The hum is there even if the audio input cable is disconnected or connected to another source (tried an mp3 player)
4. The sats seem to work fine.
5. The sub does not seem to work correctly. It seems to put out too low a volume and the sound from it seems distorted.
6. After taking the sub apart, I verified that the hum comes from the speaker (as opposed to an electonic part). The four largest radial electrolytic capacitors on the one board have a brown "gook" around them which I think is an indicator that they have failed and leaked. They are both rated at 4700 uf. One is 63 v, the other 35 v.
Does it make sense that it would be the caps? I would try my hand at replacing them, but after searching radioshack and the net, I can't seem to find capacitors of the same value.
Any advice would be appreciated.
Thanks,
John
I did some trouble shooting which determined the following:
1. The humming is noticed as soon as the power is turned on. It does not change in volume as the volume control for the sats or sub are increased/ decreased.
2. I have tried plugging it into other outlets, which did not help.
3. The hum is there even if the audio input cable is disconnected or connected to another source (tried an mp3 player)
4. The sats seem to work fine.
5. The sub does not seem to work correctly. It seems to put out too low a volume and the sound from it seems distorted.
6. After taking the sub apart, I verified that the hum comes from the speaker (as opposed to an electonic part). The four largest radial electrolytic capacitors on the one board have a brown "gook" around them which I think is an indicator that they have failed and leaked. They are both rated at 4700 uf. One is 63 v, the other 35 v.
Does it make sense that it would be the caps? I would try my hand at replacing them, but after searching radioshack and the net, I can't seem to find capacitors of the same value.
Any advice would be appreciated.
Thanks,
John