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    Not clear to me - you didn't mention your test...

    Not clear to me - you didn't mention your test method, you just said they test the same, but I'm not clear in what context "the same" means - the same as each other, or the same as a verified case...
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    Case hardened parts have a very hard skin and...

    Case hardened parts have a very hard skin and usually test harder than a regular heat treated steel. Thin parts are usually more economical to make from a heat treatable steel rather than to use a...
  3. First thing I'd do is to remove the input tube...

    First thing I'd do is to remove the input tube and see if the voltage is still there.
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    Understood - I'm not endorsing this, just an...

    Understood - I'm not endorsing this, just an observation that the OP may well be talking about 30 degrees and not 3.

    To me there's a purity and elegance with a Strat that pushing the design gets...
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    8mm screw height would allow a much higher angle...

    8mm screw height would allow a much higher angle than is usual.
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    Mesa Nomad 100 footswitch

    I have a Mesa Nomad 100 in right now and when switched on all three channels are selected on the footswitch simultaneously. It subsequently behaves normally once any channel is individually selected....
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    Original knobs are fairly pricey in the UK -...

    Original knobs are fairly pricey in the UK - something like £200 and often needing to be imported from the USA. A better bet would be just to fit new, but the customer wanted to retain the originals....
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    Pickup swap from hell.....

    I've just had an '69 335 in for a pickup swap and it's taken an unbelievable amount of time and effort due to the knobs being epoxied onto the pots. Who the hell thinks that was a good idea? That's a...
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    I remove the strings and springs then slacken all...

    I remove the strings and springs then slacken all 6 screws so the bridge plate sits flat on the body. Then carefully tighten the first screw until the rear of the plate just begins to lift, then I...
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    It's a couple of years since I last had one for...

    It's a couple of years since I last had one for repair and I can't recall the specific location, It's straightforward to check if the supply is there though on the ICs it supplies - U3-U7 & U10.
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    I worked in the hot metal days of the newspaper...

    I worked in the hot metal days of the newspaper industry. Lead was everywhere and it was planed, sawn, cast and handled all day long. In addition there was a lot of mineral oil used so the lead dust...
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    There are a number of voltages; A+, B+, C+ and...

    There are a number of voltages; A+, B+, C+ and VBias. Check them all. I've had these pedals in for repair where the 100R resistor in the A+ supply is open. If this is the case then you'll still get...
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    Acrylic lenses will polish out with a good...

    Acrylic lenses will polish out with a good quality metal polish. I've used 'Solvol' for acrylic. If a scratch is deep enough so you can feel it with a fingernail the surface will need to be rubbed...
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    I have a DMM that jumps when taking readings as...

    I have a DMM that jumps when taking readings as you describe. In my case its noise being picked up by the windings. I also get it with some pickups with the same meter. Even if you get readings that...
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    There's a trick I learned a few years ago that...

    There's a trick I learned a few years ago that uses air-drying modelling clay to bed the transducer and saddle in perfect contact to eliminate any gaps and even-out string pressure. Easily reversible...
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    They can fracture internally and then the only...

    They can fracture internally and then the only coupling is stray capacitance. Due to the high input impedance of the preamp you still get a small signal being amplified. Piezo transducers usually...
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    Power tubes can be pressed into service as...

    Power tubes can be pressed into service as regulators. I had an old signal generator that used a 6L6 as a regulator.
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    Solder flux can be a problem - especially rosin....

    Solder flux can be a problem - especially rosin. I'm increasingly suffering from a reaction to this after long periods of soldering - a constant need to clear my throat that last for days. I have...
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    A 6.5" speaker can be fine for vocal/guitar - I'm...

    A 6.5" speaker can be fine for vocal/guitar - I'm thinking of the Fishman Loudbox Mini (which can be had as a battery/mains unit). I have quite a few customers who have these and they do sound really...
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    From a practical perspective when I've invested a...

    From a practical perspective when I've invested a lot of time and materials into a one-off build and want to be certain that I don't make a mistake I use a dummy setup just to locate everything. ...
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    In the diagram there is no voltage divider...

    In the diagram there is no voltage divider action. The only change is to the effective resistance value as seen when measured across R26. Now, consider if the bottom end of R26 was grounded and there...
  22. I suspect with thermal fuses that some cheaper...

    I suspect with thermal fuses that some cheaper types operate if subjected to long periods of heat that's marginally below their nominal operating temperature, or if they're subjected to transient...
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    It also appears from the pics that you have the ...

    It also appears from the pics that you have the screened leads grounded at both ends - is this the case?
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    Take a look here for calculations to give a...

    Take a look here for calculations to give a better insight into the actual values involved;

    https://www.liutaiomottola.com/formulae/compensation.htm
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    I have scoped amps to see how biasing affects...

    I have scoped amps to see how biasing affects output level and for the ones I've checked the difference is very slight - too small in my opinion to make any difference within the normal range of...
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    I always bias on the cool side to prolong tube...

    I always bias on the cool side to prolong tube life and when amps go out they get played and everyone is happy. Given the price of tubes in the UK and the short warranty I don't think anyone would...
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    I don't, but I'm keeping a lookout for any more...

    I don't, but I'm keeping a lookout for any more of these if they turn up cheaply enough. I'll you know if I happen across a display.
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    I had one with flexible tips in the '80s and the...

    I had one with flexible tips in the '80s and the same tip lasted for years of frequent use, but I've not seen them for sale since then.
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