avionic
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Apr 24, 2017 at 11:25 PM
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Birthday:
Apr 10, 1957 (Age: 60)
Location:
Fort Dodge, Iowa cornfield
Occupation:
Pharm/Bio Maint.Tech.

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avionic

" Black Knights", Male, 60, from Fort Dodge, Iowa cornfield

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I very seldom open this page. So PMing me will get a quicker response. Dec 29, 2016

avionic was last seen:
Viewing forum Exclusively Sansui, Apr 24, 2017 at 11:25 PM
    1. avionic
    2. 4thgear
      4thgear
      yu dave got time to talk???
      rett
    3. avionic
      avionic
      I might look at this page once or twice a month--Send a PM and you'll get a quicker response!
    4. Mondry
      Mondry
      Marantz 2235 hum even at zero volume
      In search of that "perfect" piece, I have acquired a good looking Marantz 2235. Unfortunately it produces a humming noise through speakers, and I am hoping to get help figuring out how to fix it. The noise is present in all positions of the selector switch, even at zero volume. I have hooked up other sources in various configurations and so far have determined that the main amp is not the culprit. I have replaced the power filter caps, the caps in the power supply board and the tone control board (with the exception of two bi-polar caps), to no avail...
    5. avionic
      avionic
      I almost never look at this page--If you want me to reply--send me a PM!!
    6. 4seatPilot
      4seatPilot
      Hello sir... greetings from another aviation buff!
      I'm wondering if you can help me out. Hours of google have turned up very little for me.
      I have a CA-410 that has a blown output (no conduction where there should be).
      Transistors in place are NLA 2SB566A and 2SC476A
      http://www.datasheetcatalog.org/datasheet/HitachiSemiconductor/mXqxszv.pdf
      http://www.datasheetcatalog.org/datasheets/37/240835_DS.pdf
      The best substitutes I can come up are On-Semis MJE15035 and MJE15034.
      http://alltransistors.com/pdfdatasheet02/mje15034_mje15035.pdf
      The collector current is the same, power disipation seems similar, but the CEO and CB voltages are way off... other parts I find with closer voltage specs have different current ratings, and from what I understand the current rating is more important?
      Sorry to pull you away from your projects, I'm hoping this is an easy question for you! ;)
      Steve
    7. wsissons
      wsissons
      Hi there I know you know alot about the ns 1000m......Ive got a pair Ive got to pick up for 500.00 .....there in great shape......my concern is driving them I have a hk 930 right now and it does well on my ar 3a .......but feel I need to upgrade big time with the 1000s......If you can share some ideas Id love to hear them ....thanks Wesley......
    8. qsaudio
      qsaudio
      you are a FET MONSTER, lol, thanx for helping theses others out, you knoe a lot.
    9. Dr. Ear
      Dr. Ear
      Hi Avionic, do you have a copy of the SM for the Yamaha C-50 preamplifier? Cannot find it anywhere. Thank you! Kind regards, George
    10. avionic
      avionic
      Note: to those posting on this page..You will get a much quicker response sending me a regular PM. I very seldom look at this page..
    11. brad6285
      brad6285
      dave the amp looks great but i havent have time to set it up yet i can wait to hear it. the powder coating looks freakin awesome. will let you know when i crank er up. thanx brad
    12. shojam
      shojam
      Hi Avionic!

      I have been reading your posts regarding YAMAHA ca-1000....I really need your help on it...I purchased YAMAHA ca-1000 II from a vintage dealer few months back..problem started when right channel went off....found that power transistors along with 47 Ohms resistance are gone, so ordered for replacements ( B817C & 1047E)...in the mean time found another ca 1000 II in a junk market, which was in working state but with a hum in both channels...I replaced the right channel from the newly acquired one... Powered it but relay didn't worked....so i manually switched the contacts with the help of little wooden stick... a screaming noise was observed in right channel....so switched off the amp.....the replacement transistors are in my hands now but feeling hesitation to plant them, coz i think that problem isn't in channel's circuitry (all components were found in working state upon testing) .....Would you kindly help me on it...?
    13. Badger
      Badger
      Dave,
      Don't know if you got my last message. I talked to you back in Feb about work on a Yamaha Ca-2010. You thought you could get to it in 6 weeks or so. I'm checking back to see if you can fit it in. PM or e-mail me at brucepoland@yahoo.com and let have an update please.
      Thanks, Badger
    14. avionic
      avionic
      -----Notice----
      I don't do Yamaha BX-1's Don't even bother asking.

      Dave
    15. avionic
      avionic
      Either call me or PM me.I never use this page ..Dave
    16. OscarEmmy
      OscarEmmy
      Can you PM me with a price to assemble the second CA-1000 that is in several pieces? A ballpark would do. Thanks Dave
    17. OscarEmmy
      OscarEmmy
      Dave,

      My Yammie has started to behave strangely :( When it's cold, at startup the left channel takes several seconds to come on - after that it is normal, and there are no issues once it's warmed up if I switch it off then on again - it's only when starting from 'cold.' Any idea what might be causing the problem?
    18. pete05
      pete05
      I see you know your Yamaha gear! I have a query for you.
      I have a B-2x European version 220V 50HZ 1300watt. The problem is I live in Australia where the standard is 240V 50HZ. I would like to know if this could cause my amp problems?

      I have been monitoring our voltage and it sits between 229 & 235V my amp does run very hot especially the right channel my options seem to be a Variac or replacing the original transformers with toroids. What is you advice

      Any help would be great thankyou.
    19. ccwasson
      ccwasson
      I need my M-80 repaired/refurbished. I have it paired with a C-85. Only one channel is working. Would you be willing to work on it please? Thanks for your consideration
    20. OscarEmmy
      OscarEmmy
      Thanks. I just ordered the tape deck service manual and intend to work at getting the motor running. A friend at work just pretty much gave me a Thorens turntable she says she has had since 1972 (she was given it by a friend who upgraded) and it's in its original box...unused for a couple of decades! Not sure which model/arm/cartridge is going to turn up when she brings it in for me, but I am really thrilled regardless and isn't it amazing how generous people can be? I've wanted a Thorens for a long time, but thought I'd have to wait until I found a full-time job (I'm in my last semester of my PhD). LOL...sorry, wittering on, but just so darned excited! Ha ha :)
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  • About

    Gender:
    Male
    Birthday:
    Apr 10, 1957 (Age: 60)
    Location:
    Fort Dodge, Iowa cornfield
    Occupation:
    Pharm/Bio Maint.Tech.
    USAF ret. F-15(Eagle)Electronic warfare Craftsmen

    DIY Audio,electronics Been repairing Audio/Video since the late 70's

    Signature

    Bridged Yamaha B-6's / C-85 / PF-800/DL-160 / CA AZUR 740 /NS-1000M's
    Keep it pithy! No bloviating!
    RET USAF 1978-1998
    " Artie knows what we don't "-- PPP
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