questionable amp service

Discussion in 'Amp Central Station' started by ozcal, Feb 8, 2019.

  1. Silverface

    Silverface Poster Extraordinaire Ad Free Member

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    Wow, how odd. I do know of a few "amp specialists" around LA that came out of guitar amp manufacturing QC departments and only had "on the job training" - but they know to stay within limits. And I'm rusty enough that I'd probably turn it down, although I *could* do it. It'd just take me too long to kick the right synapses into gear! :lol:

    But most of the real pros know are all in their 50's and 60's, and we all learned basics building Heath, Eico and other non-instrument related gear - receivers, "hi-fi" amps and preamps, crossovers, power supplies....oh - and fixing cathode-ray tube TV's!

    When we were in high school at least a quarter of electronics was *required* as part of "shop" class. I took 4 years, the last as lab assistant (i.e. I taught the class while the teacher took naps after eating an apple that had a faint smell of vodka o_O).

    We even rebuilt...and had working...a surplus Navy portable radar unit. Until some guys in suits from the TRW Systems complex next door showed up and demanded it be deactivated - apparently it was fouling their satellite test gear:lol::lol::lol::lol:

    There are also guys like Rob Robinette who had military - and more - electronics training. Amp builder Mike Holland is another ex-military guy.

    However, I think I know what you're talking about - FAR too many "techs" have appeared with training that started...and ended...with Gerald Weber and Aspen Pittman books and a used (and not understood) copy of the RCA Receiving Tube Manual.
     
  2. archetype

    archetype Fiend of Leo's Silver Supporter

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    You and I are from the same era and we understand each other on this kind of equipment. We and others gave ourselves broad experience and can deal with an old tube receiver given an appropriate signal generator or two.

    I really don't know why you choose to vehemently grind this axe about how an AF tech should inherently be a capable IF and RF tech, but you seem to feel strongly that this must be the case. You know techs who are competent with AF, IF, and RF and ply their practice as guitar amp techs. I don't know guitar amp techs who are competent across AF, IF, and RF.
     
  3. lammie200

    lammie200 Tele-Afflicted

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    In my experience, as a lot of people here have said, servicing old tube amps can be hit or miss. I had a pair of VTL mono locks that worked great for 15 years. One crapped out and I sent them both back to the original designer. He fixed it and recapped them. It crapped out again in about 3 months. I contacted the designer and he said it was time to call it quits.
     
  4. Silverface

    Silverface Poster Extraordinaire Ad Free Member

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    "vehemently"

    Damn, I'm too old and tired to "vehement " anything! :lol:

    Sorry, didn't mean it to come out that way at all!

    My point was that good, solidly-trained, professional electronics techs that have education in the subject should, IMO, be able to handle radio tuners - which are not among the most complicated type of electronics job handled.

    Rarely will all that be memorized, which is why everyone I know also has a well-worn reference library (and computer bookmarks) we use when - "if" - we take in such jobs. And most dedicated "instrument/amp tech shops" will refer that work out simply because they are SO backed up with work for gigging and recording musicians they just don't have the time - unless it's for a "regular".

    There's just little time between stuff like 3-day retube/rebias/checkup jobs on 6 amps for a touring pro, re-profiling/radius change/refret on a custom neck for a left handed shredder, inspection/authentication on a couple 50's Gibson electrics for a broker, 5 separate ICE power supply replacements on hybrid bass amps, fixing a mic-through-side 3"x2" hole in a D-41, replacing the one broken string for the 10 year old kid by installing a new set and adjusting/making his $80 acoustic playable - for $5 (45 minutes of work when shop rates are posted - $75/hr)

    - and spending time on the phone (or with a walk-in) explaining why you just can't help him debug/fix his DIY non-working 5F1 (or 5E3) kit and teach him why the little colored stripes on those things that went in places marked "R3" and such on the board are *different*, and that taller tube he found with "EL84" on the glass DOES fit a same socket on the amp - but NO, it will not give him *more gain* because it's bigger, it won't work at all, and he'll have to look up why. 15 minutes to an hour explaining all this for free to be polite. Almost EVERY Saturday.:confused:

    Oh, and discovering a rusty, decades-old Hot Rod Deville had original factory wiring slipped down in between the jack post slots....

    ....and never soldered.

    o_O

    (which is why I'm glad I'm home only doing limited stuff for old bandmates and referrals, pus some shop "overflow" and specialty items like pedal steels....)
     
  5. Greggorios

    Greggorios Tele-Afflicted Silver Supporter

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  6. archetype

    archetype Fiend of Leo's Silver Supporter

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    Cool, brother. :D I've forgotten where I put my vehemence. Is that what I came into this room to find? Why did I come into this room, anyway?
     
  7. Silverface

    Silverface Poster Extraordinaire Ad Free Member

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    Mine's in "Effigy" - a little town outside Reno NV. Great for hangings from what I hear.

    :lol:
     
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