How to repair power supply Dynaco PAS tube type stereo preamp Transformer issue SDS Cap Board

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  • เผยแพร่เมื่อ 23 ต.ค. 2024

ความคิดเห็น • 33

  • @Valerifon1
    @Valerifon1 8 หลายเดือนก่อน

    What you showed us regarding the power cord - Wow! Great job of sleuthing there Mr.Terry! Mental note made! Isolate the suspect part for testing! 😎👍 Cheers - Luther

  • @alexdeleon7135
    @alexdeleon7135 3 ปีที่แล้ว +9

    Well spotted. Your integrity as an electronics repairman is a joy to behold.

  • @hestheMaster
    @hestheMaster 3 ปีที่แล้ว +2

    Best electronics troubleshooter and repairman on YT! Hey another visit from Snauzeramous!😎👍🏻👍🏻

  • @bigmac4948
    @bigmac4948 3 ปีที่แล้ว +1

    Nice Terry. Look'n forward to part two.

  • @davidsigglekow1349
    @davidsigglekow1349 3 ปีที่แล้ว +1

    Always look forward to your videos! Great work sir! You are quite the Tech.

  • @midmodaudio6576
    @midmodaudio6576 3 ปีที่แล้ว

    Thank you for detailing your trouble-shooting method, very informative. My only complaint is the owner's mod of a blue LED indicator lamp, it should be AMBER : )

  • @Robert-xn3jb
    @Robert-xn3jb 3 ปีที่แล้ว +1

    The easiest way to repair these is to throw them away! I had to say it…. Great videos!

  • @djfrank59
    @djfrank59 3 ปีที่แล้ว +2

    Hi Terry, I've actually experienced a defective power cord twice. Similar situation. Look closely at the conductors. strip one of the ends and take notice to see if you see any green, liquid oxidation. There were power cords made in the 60's that had this issue and would corrode the copper and cause resistance. I had a few Fender guitar amplifiers also that had this power cord issue. Great video.

  • @preiter20
    @preiter20 3 ปีที่แล้ว +6

    Some ghouls come from Portu-ghoul....Can't beat Snauzeramous. More great troubleshooting tips from D-Lab!

  • @TheTrueVoiceOfReason
    @TheTrueVoiceOfReason 3 ปีที่แล้ว +1

    I think I have Snozzeramus' great grandpappy, a big old brute that MY grandpop used to used for certain plumbing jobs. Used to melt that thick old plumbing solder faster than a 40 watt flat tip on 0.020 Kester. One of these days I'll drag it out and make sure the old cloth covered wire is intact.

  • @srtamplification
    @srtamplification 3 ปีที่แล้ว +4

    Good catch on the PT.

  • @dirtydon8661
    @dirtydon8661 3 ปีที่แล้ว +2

    Your work is a delight to watch!

  • @darthbubba866
    @darthbubba866 3 ปีที่แล้ว +1

    Gotta love those old PAS preamps!

  •  3 ปีที่แล้ว +2

    I loved this video Terry! Simple explanation and corrections performed!

    • @d-labelectronics
      @d-labelectronics  3 ปีที่แล้ว +2

      Thank you my friend, I try to keep a simple approach

    •  3 ปีที่แล้ว

      @@d-labelectronics and you succeed! Best repair bench tech channel on TH-cam!

  • @chienminchang40
    @chienminchang40 7 หลายเดือนก่อน

    Good job , I have one this preamp, only use for phone stage now.

  • @bruceferrero8178
    @bruceferrero8178 3 ปีที่แล้ว +2

    Good catch Terry.

  • @gaylen8467
    @gaylen8467 3 ปีที่แล้ว +1

    Yea, pre amp fixing, way to go Terry

  • @edwardhannigan6324
    @edwardhannigan6324 3 ปีที่แล้ว +1

    Great video Terry...Info and expert repairs..Ed..UK..😀

  • @kornucopia9460
    @kornucopia9460 ปีที่แล้ว

    smart thinking about the transformer situation

  • @fatboysonny
    @fatboysonny 2 ปีที่แล้ว

    Brilliant as always, thank you

  • @waynethompson8416
    @waynethompson8416 3 ปีที่แล้ว +10

    Terry,
    Just a thought about the new power cord.
    Are the wires that make up the power cord rated for the total current that might be drawn for the amp AND everything else that might be plugged into the sockets in the back?
    I understand about the reason to not use a 3 wire cord on the replacement cord, but is there a reason that you chose to not use a polarized plug?

    • @jasonlamoureux7578
      @jasonlamoureux7578 3 ปีที่แล้ว +3

      Indeed.. I was going to ask the same question. I would've thought a polarized 2 prong with the hot running to the new fuse location.

    • @kgsalvage6306
      @kgsalvage6306 3 ปีที่แล้ว +1

      I agree that a polarized cord would still be a good idea. Keeping the hot line going to the fuse and switch. Only a safety thing.

  • @electrolytics
    @electrolytics 3 ปีที่แล้ว +1

    Great video thank you.

  • @kornami8678
    @kornami8678 3 ปีที่แล้ว +1

    Good shootin'!

  • @brucemillar3015
    @brucemillar3015 3 ปีที่แล้ว +3

    Why not use a polarized line cord as a replacement cord? It guarantees that you will be switching the hot side of the line every time.

  • @jcool0122
    @jcool0122 3 ปีที่แล้ว +1

    !!! Another great video

  •  3 ปีที่แล้ว +1

    I own a Dyna PAS 2 preamp that had the same problem except I had an intermittent no power problem. I replaced the cord and plug and the problem went away.

  • @moodyga40
    @moodyga40 3 ปีที่แล้ว +1

    some of the pass needs a mains fuse

  • @cesaru3619
    @cesaru3619 3 ปีที่แล้ว +1

    always double-check

  • @jdmccorful
    @jdmccorful 3 ปีที่แล้ว +1

    Good start. Thanks for the look.