Hello, I have some Xtant 2200i amplifiers that I would like to refurbish back to factory specs or better if possible. I have been unsuccessful at finding any information for these amplifiers. Schematics, values... anything. Not to mention, these are way above my knowledge. Since these are my personal amplifiers I was going to try to learn and refurbish as I could. I see now, that is going be extremely difficult without any resources for schematics or information. With that being said, im going to swallow my pride and send these to a qualified person. can anyone recommend a person knowledgeable on these Xtant 2200i amps? Thanks.
I don't have anything specifically on those. Posting a photo of the amps and of the components that are damaged beyond recognition may help.
In what way have they failed?
In what way have they failed?
Only one of them is actually having problems. The orange low impedance LED is blinking at a steady beat. When I measure dc offset of both channels I'm getting readings that are fluctuating rapidly anywhere from 35mv to 135mv. I connected a test speaker to the amplifier outputs and I am hearing a distorted buzzing type of sound that matches the blinking low impedance LED flash. Someone has been in the amplifier and has did some work. I don't know if this could be causing the problem. I can post pictures tonight when I get home. The rest of the amplifiers are working but bias seems to be different on each one. Dc offset seems ok with the rest of the amplifiers at around 25mv.
Hopefully, all you have is shorted outputs in that channel.
As far as I know, there are no common problems in these (xtant) amps that would justify any refurbishment.
As far as I know, there are no common problems in these (xtant) amps that would justify any refurbishment.
As I mentioned in the original post, someone has been in this amplifier and has attempted some repair work. Here are a couple pictures. I don't know if this could be causing the issue. I can't seem to find any information on this part. Any insight on this would be greatly appreciated. Thank you.
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Well, after reading up on how to post pictures on the forum, I think I may have gotten it. I should have done my due diligence before attempting to upload the pictures without knowing the process. I apologize. So, here are the pictures of the board and the suspected repair. I have googled the capacitor markings but have not found any specific info on that capacitor. I know the original value of the cap since I have multiples of this amp. I am just trying to determine if this replacement that was used is the correct value. Hopefully, the pictures give you an idea of the repair and if this could be the issue described in my second post.
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What was missing from post #7?
This is a 2-channel amp. Both channels should be identical. Compare the connections of the components on this channel to those in the other channel.
You may want to remove those 4 resistors and the small cap to inspect the board condition under the resistors. The capacitor could likely be soldered to the top of the board. The jumper may be for a damaged via for the resistor.
This is a 2-channel amp. Both channels should be identical. Compare the connections of the components on this channel to those in the other channel.
You may want to remove those 4 resistors and the small cap to inspect the board condition under the resistors. The capacitor could likely be soldered to the top of the board. The jumper may be for a damaged via for the resistor.
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