Opened my Adcom GFA-555ii and... Surprise!

stretchlstretchl Posts: 1,295
Doesn't seem to impact the sound quality, but what in the world did someone do here?

I bought the unit used either on here or eBay 3-5 years ago. Finally opened it as I'm considering putting it on the market once I get my Odyssey monoblocks in place. I'm sure this will kill the resale value so maybe I'll hang onto it as a refurb project.

Appreciate any input as to what's going on and, possibly, why.

Thanks.

3zsu20cjlccj.jpg

1tca4j83rpy9.jpg

rjk87rhulzw9.jpg

2yez9wnn4r8c.jpg

rsbli2u7xq5j.jpg
“Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
- Isaac Asimov

Hi-Fi
Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
Cabling by Groneberg
Visuals
http://StretchPhotography.com
http://Vimeo.com/channels/stretchphoto

Comments

  • ALL212ALL212 Posts: 1,133
    Somebody hacked the heatsinks and used silicon calk to insulate them?
    Aaron
    Enabler Extraordinaire
  • stretchlstretchl Posts: 1,295
    It looks like they just added those things on there? Any idea what the logic could've been, Aaron?
    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
    - Isaac Asimov

    Hi-Fi
    Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
    Cabling by Groneberg
    Visuals
    http://StretchPhotography.com
    http://Vimeo.com/channels/stretchphoto
  • ALL212ALL212 Posts: 1,133
    edited April 15
    GFA 555? I'm looking for a stock picture of the guts...

    MK I, II, III...I have no idea how many they had?
    Aaron
    Enabler Extraordinaire
  • la2vegasla2vegas Posts: 3,678
    Ah, but does it sound good? That is the question. :D
  • maxwardmaxward Posts: 380
    Just a guess: Perhaps there was a mechanical buzz that the owner traced to that area, so he not so neatly cured it with the silicone.
    Thorens TD-160C; Sumiko Talisman S; Jolida JD9; Marantz CD-53; North Star Intenso;
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  • stretchlstretchl Posts: 1,295
    Here's an image from Steve Hoffmann's that shows a different set of... heatsinks?

    wrlo2rfk1w9p.png
    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
    - Isaac Asimov

    Hi-Fi
    Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
    Cabling by Groneberg
    Visuals
    http://StretchPhotography.com
    http://Vimeo.com/channels/stretchphoto
  • ALL212ALL212 Posts: 1,133
    Ya... That's not your board either and that one's been modified as well. I'm not an Adcom guy but I'd bet those caps aren't stock. You've got WIMA (square red), maybe Nichicon ( the brown towers) and some orange "gum drop" caps in there also. See where those brown towers are in this pic? I don't see caps in those positions in your first pic.

    It might not be a "bad" thing they did but I'd agree that what you have is probably not stock.

    Aaron
    Enabler Extraordinaire
  • stretchlstretchl Posts: 1,295
    Just listening to it and it sounds good. Certainly no problems. Good soundstage, separation of the instruments, etc. Was trying to figure out where I bought it. I thought it was here in the Flea Market but can't seem to find a relevant FS post or any messages I sent about it. I don't think there's a way to list this for sale as a GFA-555ii with this stuff in it, right?
    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
    - Isaac Asimov

    Hi-Fi
    Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
    Cabling by Groneberg
    Visuals
    http://StretchPhotography.com
    http://Vimeo.com/channels/stretchphoto
  • la2vegasla2vegas Posts: 3,678
    stretchl wrote: »
    Just listening to it and it sounds good. Certainly no problems. Good soundstage, separation of the instruments, etc. Was trying to figure out where I bought it. I thought it was here in the Flea Market but can't seem to find a relevant FS post or any messages I sent about it. I don't think there's a way to list this for sale as a GFA-555ii with this stuff in it, right?

    As long as your ad discloses any pertinent information you should be fine. Give it a go you never know. :)
  • honestaquarianhonestaquarian Posts: 2,499
    Looks like some sort of modification/upgrade that was kinda done without caring what it looked like, because maybe they never expected to get rid of it or open it up.
    If it sounds good then I worry too much. You can always research what kind of mod it might be on an Adcom forum or something if you really wanna know.
    Living room Home theater: Upgrade Company modified Onkyo PR-SC5509,Sunfire Cinema grand Signature 5 channel amp(1st gen),Carver TFM-45,Carver M-400a,Panasonic TC-P50ST60 50" Plasma(last gen before Plasma production stopped)Pioneer Elite DVL-91,Meridian 519 Dolby AC-3 RF Demodulator,Oppo Digital UDP-205,TiVo Bolt VOX,Nakamich BX-300,Technics SL-1200MKII,Shure V15 Type VxMR cartridge,Polk SDA-SRS 3.1 TL(with RD-0198 tweeters, upgraded with Larry's rings, black hole5,an Avel-Lindberg 1000VA isolation transformer, VR3 customer crossovers and internal wiring),Polk CS-1000P(with SL-6506 tweeter),Polk Monitor 5jr(with RD-0194 tweeters),Polk RT-35i (1),Polk Mini Monitors,Polk PSW150(4)Monster Power HTPS 7000 MKII Signature series,Monster Power AVS 2000 Signature Series,Various MIT,Monster,Upgrade Company and Belden interconnect,power,HDMI,Coax and Toslink Digital and speaker cables.

    Bedroom 2 channel system:Integra DTM 40.4,Nakamichi BX-100,TiVo mini,Musical Fidelity X-LPS,X-PSU,Carver TFM-25,Sony KV-34XBR970(last of the widescreen tube sets before production stopped)Technics SL-1200MKII,Shure V15 Type V MR cartridge,Polk RT-55(with SL-6506 tweeters),Polk PSW-200 in plexiglass(2),Sony Playstation 3 slim.Monster Power HTPS-7000,Monster AVS-2000, PowerVarious Kimber,Audioquest and MIT interconnects and speaker cables.
  • F1nutF1nut Posts: 42,703
    stretchl wrote: »
    Doesn't seem to impact the sound quality, but what in the world did someone do here?

    I bought the unit used either on here or eBay 3-5 years ago. Finally opened it as I'm considering putting it on the market once I get my Odyssey monoblocks in place. I'm sure this will kill the resale value so maybe I'll hang onto it as a refurb project.

    Appreciate any input as to what's going on and, possibly, why.

    Thanks.

    3zsu20cjlccj.jpg

    1tca4j83rpy9.jpg

    rjk87rhulzw9.jpg

    2yez9wnn4r8c.jpg

    rsbli2u7xq5j.jpg

    Looks like another hack job from the Upgrade Company.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • stretchlstretchl Posts: 1,295
    Just sent the photos to an adcom repair/refurb specialist, https://hoppesbrain.com

    Here's what he sent back:

    "Wow, that is shockingly bad work! Looks like someone attached these heatsinks to one pair of the driver transistors. These transistors do in fact run a little hot, but they only need small heatsinks to run well within normal range. Giant heatsinks like this are inappropriate. Also, the other two TO126 packages transistors also run hot, so this person's modification doesn't even address the whole issue. I'd be worried that other things have been tampered with, by someone unqualified.

    I do actually have a new input board kit for the 555 MKII coming out pretty soon. It's a lot like the MKI board, of which I have attached a photo."

    j6vhkm4m6t3c.jpg

    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
    - Isaac Asimov

    Hi-Fi
    Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
    Cabling by Groneberg
    Visuals
    http://StretchPhotography.com
    http://Vimeo.com/channels/stretchphoto
  • EndersShadowEndersShadow Posts: 16,833
    @stretchl

    I will give you 2 dollars and lightmans phone number so you can prank him
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • stretchlstretchl Posts: 1,295
    @EndersShadow I don't get it...
    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
    - Isaac Asimov

    Hi-Fi
    Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
    Cabling by Groneberg
    Visuals
    http://StretchPhotography.com
    http://Vimeo.com/channels/stretchphoto
  • ZLTFULZLTFUL Posts: 5,061
    He is offering to buy it from you for the sum of 2 American dollars and @lightman1 s phone number.

    It was an attempt at humor.
    It was clearly wide of the mark.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
  • la2vegasla2vegas Posts: 3,678
    ZLTFUL wrote: »
    He is offering to buy it from you for the sum of 2 American dollars and @lightman1 s phone number.

    It was an attempt at humor.
    It was clearly wide of the mark.

    jaz76k8bkaxz.gif
  • stretchlstretchl Posts: 1,295
    I was thinking, "Two dollars? Two dollars for what?" :)
    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
    - Isaac Asimov

    Hi-Fi
    Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
    Cabling by Groneberg
    Visuals
    http://StretchPhotography.com
    http://Vimeo.com/channels/stretchphoto
  • EndersShadowEndersShadow Posts: 16,833
    ZLTFUL wrote: »
    He is offering to buy it from you for the sum of 2 American dollars and @lightman1 s phone number.

    It was an attempt at humor.
    It was clearly wide of the mark.

    Correct on both counts...

    You’d mentioned selling it briefly.... I tried to be funny and swung wide lol....

    Apologies for muddying up the thread.....

    Been a long day..
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • gwhgwh Posts: 1,433
    There was one for sale local (Lawton, Oklahoma Craigslist) I facilitated the shipping only.
    Mystery solved?
    HT:
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    Signal Cable speaker wires & interconnects.
  • stretchlstretchl Posts: 1,295
    I don't remember. Could've been. You remember working with me specifically or just that there was a 555ii you helped someone on here with? It's been a good amp for me - all I need and more for my 705's.
    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'
    - Isaac Asimov

    Hi-Fi
    Apple Lossless --> Squeezebox Touch --> Joule Electra LA-100 Mark iii --> Yaqin MC-10t --> LSiM-705's
    Cabling by Groneberg
    Visuals
    http://StretchPhotography.com
    http://Vimeo.com/channels/stretchphoto
  • corticocortico Posts: 588
    edited April 20
    Yikes! Looks pretty sloppy, seems that the hot glue and the bent fin on the heatsink is trying to avoid it shorting a Fanta the chassis...

    I have the good habit of opening every piece of equipment I buy, to find previous repairs, excessive heat digs... etc.

    if it looks hacked, I’ll send it back. It’s a bit o a forensic work, but I can learn a lot about how the unit was kept just by observing the interior.

    Other than that, I find the interior of this amp something really nice to look at! Central toroidal transformers and big filter caps symmetrical layout ... super!
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