I recently got a Yamaha P2200 from a friend and it got an annoying hum right around 60% volume. After reading some of the comments, I decided to open the amp and try to replace all the cap. I am currently looking at the Drive Stage Board and I noticed a lot of unidentifiable capacitor. My question is how important is replacing all of these tiny capacitor? and if so, what is the method to identify it? Also, is there anything else I could do to improve the sound quality of my amplifier?
Yamaha P2200 Humming
- Thread starter Skylape
- Start date
Might want to determine if it is your source first by trying a different one, before tearing into it. One test is to short the inputs of the P-2200 and then turn the attenuators up. best to monitor the o/p's with a scope (your eyes) when doing these tests.
I have 2 of them in for service right now, they are solid units. I will test the big ecaps, will leave the original ecaps in, since the owner was not too concerned about changing them. Check bias, offset. The original binding posts are junk and all need changing.
I have 2 of them in for service right now, they are solid units. I will test the big ecaps, will leave the original ecaps in, since the owner was not too concerned about changing them. Check bias, offset. The original binding posts are junk and all need changing.
Im pretty sure it is the amp because it's still hump even when I remove the amp from the source. Only if I disconnect the input cable completely, the amp stops humping. Also can you elaborate more, Im pretty new to this.
How do you remove the source? With a key stroke?With a switch?
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Sounds like a pre-amp issue.(DBX or Sound card).
Hmm.
No,Likely a little, at least.
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Have you tried this combination with a different amplifier?
Does the hum remain if you back off the volume from the 60% position?
So I did not have this problem before on my previous amp.
It became less noticeable to a point that I cant tell it anymore.
Using the XLR balanced IC's?
Yes, how do you know?
