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Yamaha CA-610 and CA-710 Integrated Amplifier Service & Repair

Recently, two friends with lovely vintage Yamaha CA-610 and CA-710 integrated amplifiers sought my assistance to have them repaired. One was dead, the other was not working well.

The Yamaha CA-710 had blown one channel. One of the original output devices, a Sanken 2SA745, had a collector to base short and it had taken out one of the driver transistors.

The CA-610 was exceptionally dirty and greasy inside and working intermittently due to this contamination of switches and rotary controls.

I fixed both of them and their respective owners were extremely happy, they had probably both not sounded so good in years!

Full writeups coming soon…

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How amazing do these Yamaha integrated amplifiers look, especially now with their meter illumination repaired!

9 thoughts on “Yamaha CA-610 and CA-710 Integrated Amplifier Service & Repair”

    1. Hi Edgar, yes I repaired both of these a couple of years ago, no problems with either after repairs, both were dead when they came in and each needed slightly different surgery, but nothing massive. I’d suggest the next step if you are local to Perth is to give me a call and we can book her in for a proper inspection and repair.

  1. hello im working 2 ca 610 2 yamaha amps both had a blown channel fixed the blown channells but bias issues on both all checks fine any ideas thx ed

    1. Hi Ed, thanks for your enquiry and yes I have many thoughts on this. Technical assistance can be accessed through our consults, should you need it. This caters for extended technical discussion, tools, procedures, T&M equipment etc. I’m closed now until early January, have a great Xmas though and get back in touch once we reopen if you need me.

      1. I have a Yamaha CA-610 everything works except the AUX port. The AUX has very low volume output and hums. Any suggestions on what the problem might be. I really want to fix this to pass unit on to my grandson.

        1. Hi Dan, without seeing and testing her, it’s hard to say, but testing will reveal the issue. She will need other age-related maintenance anyway, so I suggest taking her to a reputable vintage hi-fi repairer in your city. Lovely amps, well worth keeping in good health!

  2. Hi Dan- I have a Yamaha CA610-ll I bought new back in the late 70s that has been used since then. You think its time to recap,etc? What brand caps would be an upgrade? Thanks.

    1. Hi Ray, it’s Mike by the way and thanks for stopping by! Our advisory service is available for enquiries like this, but briefly, a full service is the minimum I would recommend at this age, along with any overhaul work, as required. Every piece is unique and should be assessed and worked on by an experienced specialist as this will provide the best result and minimise the risk of damage. There is no one brand of capacitor that I recommend, I use various premium brands/series here @ Liquid Audio, dependent on customer budget and requirement, equipment type and role in-circuit.

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