Oops!

Discussion in 'DIY Discussion' started by penance, Jan 3, 2004.

  1. penance

    penance Arrogant Cock

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    I managed to track down the source of my annoyance
    IE a dicky input selector on the amp

    So i decided to whip the board out and reflow the solder before buying a replacement (fingers crossed on this, new year = must not spend willy nilly)

    When i first got the amp s/h it had those 'orrible BFA sockets so i duely trotted out and obtained some normal type posts, wich i fitted.
    Well to get the board out i need to remove the posts as the hold the heatsink to rear of amp.
    Guess what numpty here did when he fitted the posts...........
    I managed to cover the threads with solder:rolleyes:
    I've tried the sucker and the braid but nadda.

    Not got a thread die to suit, so while im off beating myself with a big stick can anyone suggest a method of removal??

    Also had a look at the op-amps, OPA604AP, any point replaceing them if i ever manage to remove the board?
     
    penance, Jan 3, 2004
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  2. penance

    themadhippy seen it done it smokin it

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    why not try putting another nut on
     
    themadhippy, Jan 4, 2004
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  3. penance

    penance Arrogant Cock

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    Cause i wanna take em off;)

    I think your meaning to clean the threads?

    Im going to have a look in work for a die tomorrow, failing that another nut or hacksaw:eek:
     
    penance, Jan 4, 2004
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  4. penance

    themadhippy seen it done it smokin it

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    you got it
     
    themadhippy, Jan 4, 2004
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  5. penance

    I-S Good Evening.... Infidel

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    Technically the 604s are fine op amps. They're not the nastiest of cheap by any means (the dual version, 2604 is about £2.50). However, you can always have a play with replacing them. AD825s are always popular. Otherwise go up in the burr brown range to the 627. Otherwise, I'm sure WM can advise on more esoteric ADs.
     
    I-S, Jan 4, 2004
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  6. penance

    penance Arrogant Cock

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    Thanks isaac
    would i need to play with anything else? or a direct swap?
     
    penance, Jan 4, 2004
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  7. penance

    I-S Good Evening.... Infidel

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    The 604AP is a DIP8 package, so the 627 would be a straight swap. The AD825 comes only as an SMD8A, so you'll need some converter modules, or get good with your soldering.
     
    I-S, Jan 4, 2004
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  8. penance

    penance Arrogant Cock

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    do you know anything about the AD8065?
    Seems very good on paper but i can only find reports of its use in CDp/DAC, but apparently is a good replacement for the 604
     
    penance, Jan 5, 2004
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  9. penance

    wadia-miester Mighty Rearranger

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    Too good for you :D voltage probs with this one +/-13V max, the 604 isn't a bad opamp, the 627's are very 'nice' and full bodied, good texture, for me misiing top & bottom a bit, 8610's are also very good, 825's are very good too, depends on the sound your after, but remeber most now come in the smaller pacakes, and you will need to use a discreet mount device as well, some times removing, the old op-amps can be trouble especialy on decent cuicrit boards, 4 layer or more, a vacum desoldering tool is almost a must, else track repairs will be your staple diet Andy :rolleyes: you may also need extra decoupling too. Wm
     
    wadia-miester, Jan 5, 2004
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  10. penance

    penance Arrogant Cock

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    yer, before anything i need to measure voltage (pin 4 and 8 i think)
    LCaudio do the 8065 on a DIP package with decoupling caps fitted already.
    Hopefully i can use the smt desolder station at work, dont want track repair:eek:

    Soudwise, i guess im just after a tad more dynamics and oomph:D
     
    penance, Jan 5, 2004
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  11. penance

    penance Arrogant Cock

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    Tone
    how would you describe the character of the 8610/825 (if they are similar)?
     
    penance, Jan 5, 2004
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  12. penance

    zanash

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    My post has disappeared again !!

    Damn damn damn

    I said the 604 is pretty good for the cost ...you can better it by paying loads more!

    use solder wick to remove the over solder.
     
    zanash, Jan 5, 2004
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  13. penance

    penance Arrogant Cock

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    Hi Pete :)

    Tried solder wick, wouldnt get it out of the threads
     
    penance, Jan 5, 2004
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  14. penance

    wadia-miester Mighty Rearranger

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    Andy, I ordered 100 of the 8065 still bloody waiting :mad: the 8610, is a cross between the 627 & 825, it's good, I prefer 825's for some things 8066's for others, the 65's are the singles, they newer op-amps are much quieter, but haven't got the voltage range the others have, plus you will need better regulation (IMHO) to get the best out of them, also some pre's & int's don't always respond to 'by the numbers upgrades', it's the whole package, no just any one item. Tone
     
    wadia-miester, Jan 5, 2004
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  15. penance

    penance Arrogant Cock

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    Tone, i see what you mean ubout it maybe not achieving anything, but at the small cost.............:D
     
    penance, Jan 5, 2004
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  16. penance

    wadia-miester Mighty Rearranger

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    Just out of interest, what are LC selling the mounted packages for Andy?
     
    wadia-miester, Jan 5, 2004
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  17. penance

    penance Arrogant Cock

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    penance, Jan 5, 2004
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  18. penance

    wadia-miester Mighty Rearranger

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    Bags of doubles, no bloody singles, thats a fair price too for the punters :)
     
    wadia-miester, Jan 5, 2004
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  19. penance

    penance Arrogant Cock

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    yer, thought it wasnt a bad price, around 40quid for me lil ole shearne
    may give it a shot, after further deliberation
     
    penance, Jan 5, 2004
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  20. penance

    timpy Snake Oil free!!!

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    I've got AD825's in the Wadia 15, they are the sonic equivalent of a fairly large hammer :D, perhaps a bit of a shock for a Shearne :)

    I love 'em though.

    Cheers
     
    timpy, Jan 28, 2004
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