A-700 find

Discussion in 'Yamaha' started by Celt2006, Apr 9, 2018.

  1. Celt2006

    Celt2006 Member

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    Im excited. Just made a deal on a great condition smoke free home an A- 700. ...for a hundred bucks. Think i made a good deal. I may however take it to the local hifi shop to have it deoxed and recapped with updated caps before playing..ill be pushing cv d9 dpeakers for now but want up grade speakers
     

     

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  2. OMGCat!

    OMGCat! AK Subscriber Subscriber

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    Nice find and that is a great price.

    I'd definitely recommend doing the service work on it before putting it into regular use. Also getting rid of the corrosive glue and solder joint touch up is a must.
    After you're done with that work you'll have one of the best integrated amps out there IMO.

    There are quite a few threads on the A-1000 which is the big brother of the 700 and the 700 itself. Read up and you can get a good idea of which repairs you'll need.
     
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  3. Celt2006

    Celt2006 Member

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    Cool. Thanks.. I will read more and have been...looks like ill have more into it after the hifi shop gets done with it but thats ok... Ill give her a listen this weekend on cv at 10s in my house then drop it off for resoration... Yup excited
     
  4. Bratwurst7s

    Bratwurst7s In The Frying Pan Subscriber

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    Yeah, you did good. The A-series are some very good sounding integrateds. What OMGCat said about the old glue removal is seriously important. That stuff sucks up moisture and corrodes everything that it contacts. Solder joints are going to start failing, re-flowing is a must.

    Cheers,
    James
     
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  5. Celt2006

    Celt2006 Member

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    Wonder what all that will cost?? Ill get it done however.
     
  6. avionic

    avionic " Black Knights " Subscriber

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    A lot less if you DIY....;)
     
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  7. Celt2006

    Celt2006 Member

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    Never did that kind of stuff. I know basics like solder sucker and have soldered a couple resistors about 25 years ago..lol
     
  8. zaibatsu

    zaibatsu Well-Known Member

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    You probably have all the skills needed, can always practice on any other board to get used to it again.

    This thread is a great read, from someone in the same boat as you:
    http://audiokarma.org/forums/index.php?threads/a-700-restore.813092/

    You can probably clean the glue out, change the caps, and resolder the main board yourself.
    Just build a dim-bulb tester first if you go the DIY-route, as it'll save you a blow-up from a small mistake.
     
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  9. campamp614

    campamp614 New Member

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    I too just purchased an A-700 from ebay. does anyone know of a good repair tech who is familiar with these amps who can do the above maintenance?
    I watched the youtube video from stereopolice and read the comments from zaibatsu. sounds like he knows how to work on these amps.
     
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  10. OMGCat!

    OMGCat! AK Subscriber Subscriber

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    Depends on where you are and if you want to ship the amp.
     
  11. Celt2006

    Celt2006 Member

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    Well heck I might do that!!!
     
  12. Celt2006

    Celt2006 Member

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    On a somewhat related note... What might a decent soldering kit be..not too expensive...cheap as i could go and have something that would get the job done. I think i want to take a stab at recapping my cv d9s before putting them all together and in use
     
  13. Celt2006

    Celt2006 Member

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  14. OMGCat!

    OMGCat! AK Subscriber Subscriber

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    I never used a cheaper soldering station since my cruddy 20w pencil iron I had as a kid.
    I'd recommend looking at a used Weller or Hakko on CL or eBay. You can usually pick them up cheap and they last forever. Also parts are easily sourced and you've got a known good quality tool.
     
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  15. Bratwurst7s

    Bratwurst7s In The Frying Pan Subscriber

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    This is good advice. A good iron will just make the work easier. A decent used 50w Weller won't cost the world and you can trust it not to quit half way through the job. If you find that you like doing this stuff you can always sell the iron on ebay and buy an 80w soldering station.

    Cheers,
    James
     
  16. Bratwurst7s

    Bratwurst7s In The Frying Pan Subscriber

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    A good soldering station is a great thing. My kids gave me a nice Ersa 80w station for Christmas a few years ago and I love it.

    IF that X-Tronic thing holds up a station is much nicer to use than a simple iron. For $60 if it holds up that would be a useful starter. I don't know the brand but if the 3 year guarantee is real and gets honored that would imho be quite a good starter kit for the money.

    Cheers,
    James
     
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  17. Celt2006

    Celt2006 Member

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  18. avionic

    avionic " Black Knights " Subscriber

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    I have one of those. This station was purchased new maybe 7 yrs ago. It kinda sounds like a SCR is getting noisy now? I haven't popped it open yet. Probably a good time to replace it. Before it craps out.

    -- Just depends on the condition of the ebay unit. Plug it in and switch it on. LED goes blinky blinky and iron gets hot. Or does it get hot ?;)
     
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  19. Celt2006

    Celt2006 Member

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  20. avionic

    avionic " Black Knights " Subscriber

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    Not familiar with that brand from china.I know a lot of people use Hakko's.I have no opinion. I've been using Weller since I was in my mid teens.Every CTK in the F-15 integrated avionics backshop, world wide, had a Weller station.

    CTK - consolidated tool kit-
     
    Last edited: Apr 12, 2018
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