Haverholm
Well-Known Member
So, I went and bought myself a vintage integrated amp to replace my NAD C 720BEE receiver. The SU-V4X was sold as defective, with sound in only the right speaker channel, so I went into this knowing it would be a restoration project.
I've never done anything like this before, but my mind is set on learning as I go along. And from what I hear about the model it should be worth the effort.
I've done my due diligence scouring AK and diyAudio for advice on similar issues with the same model. So there's a laundry list of things to test in order to get this thing working again.
All I've been able to do after the amp arrived was to check that everything lights up as expected when powered up, and taking the top off to have a look inside. So, it hasn't been hooked up and tested with any source or speakers yet.
The attached photos were taken after only a quick dusting off with compressed air. There is still a patina on some surfaces that I'll get to next. I don't know that any parts have ever been replaced, and this may be 40 years of built-up grime, sort of sticky to the touch.
I hope those of you more familiar with the anatomy of these old beasts can give a first look judgement on the condition and advise on my next move?
The below doesn't look so good to me. Once again, I'm new at this, but I feel there shouldn't be rust around those pins:
And finally, a closer look at the area around the speaker ports. I would assume this is where we have the problem with the faulty channel. As I understand it, there could be different causes, but if anybody can narrow it down from a visual inspection, it'd be a great help:
Thanks in advance for any help or advice you can offer!
Tomorrow I'll try and give everything a more thorough cleaning before I connect the amp to my turntable and speakers to actually test it.
I've never done anything like this before, but my mind is set on learning as I go along. And from what I hear about the model it should be worth the effort.
I've done my due diligence scouring AK and diyAudio for advice on similar issues with the same model. So there's a laundry list of things to test in order to get this thing working again.
All I've been able to do after the amp arrived was to check that everything lights up as expected when powered up, and taking the top off to have a look inside. So, it hasn't been hooked up and tested with any source or speakers yet.
The attached photos were taken after only a quick dusting off with compressed air. There is still a patina on some surfaces that I'll get to next. I don't know that any parts have ever been replaced, and this may be 40 years of built-up grime, sort of sticky to the touch.
I hope those of you more familiar with the anatomy of these old beasts can give a first look judgement on the condition and advise on my next move?
The below doesn't look so good to me. Once again, I'm new at this, but I feel there shouldn't be rust around those pins:
And finally, a closer look at the area around the speaker ports. I would assume this is where we have the problem with the faulty channel. As I understand it, there could be different causes, but if anybody can narrow it down from a visual inspection, it'd be a great help:
Thanks in advance for any help or advice you can offer!
Tomorrow I'll try and give everything a more thorough cleaning before I connect the amp to my turntable and speakers to actually test it.
The thrills of living in an apartment building!
). This also goes for the remote speaker terminals, so I'm afraid there's an internal issue.
