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  1. S

    Political argument (Yeah, this is going to end well)

    I was wondering what happened to all of us when we got back. The hippies are now the government beaurocrats, college professors, lawyers, judges, and other assorted control freaks. As for the 2nd Amendment, maybe the Founding Fathers saw this coming, and wanted to make sure it didn't go too...
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    Electrical standards (of a sort)

    Or the calibers of ammunition commonly used on a list of devices which continually cause failures in some of the equipment we work on.
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    (Not so) Common Knowledge

    I've done the last twelve years in a calibration standards lab. The most interesting thing I've noted, is that 'highly educated' people in electronics simply assume the numbers they're reading on their instruments are correct. There is a void in people considering the concept that the...
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    VC3165 Frequency Counter

    I may be barking up the wrong tree, but I can't help but wonder what Harald told you at the beginning of your post. You sound like you have an ohmeter. Did you check the continuity of the pushbutton switches themselves. Like Harald said, it's not just a matter of if the switches are open...
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    VC3165 Frequency Counter

    Yeah, but did you check the continuity of the push-button switches themselves?
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    how long do various capacitors last?

    Your caps are epoxy-dipped solid tantalums. When I first started reading this thread I thought you were talking about the wet-tantalums that were popular in the 1970's (they look like aluminum electrolytics, and are still being sold today). Anyway, It's up to you on replacing them if it...
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    What kind of plug is this?

    Yeah, that's a standard 120VAC plug that was very popular during the time-frame mentioned. A lot of my gear uses that power input connection.
  8. S

    fluke 77 repair or replace

    I've got a 77 III, It uses a Bussmann DMM-44/100, and a Bussmann DMM-11. Do you have a Fluke 77 with a model number (mine's '3', in Roman Numerals), or just a straight Fluke 77?
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    tiny flexcable connector

    I don't recognize it. Some connectors are specific to the manufacturer. A lot of times I look for old scrapped units from the same manufacturer, and salvage parts I want. If I understand what you want to do, I'd solder small wires to each pin, and terminate the ends into a solderless...
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    Digital meter

    You need to be a little more specific. A 'power meter' is a very specific instrument for a very specific purpose. Do you mean you just want a standard volt, ohm, amp meter (called a DVM, digital volt meter; or DMM, digital multi meter) I'm thinking that's what you mean, but it'd help if you...
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    Buying Used Tek 465 Oscilloscope for 1st Time

    Ask him what kind of problems it has. Tektronix makes great scopes, put parts can be pricey if you have to fix it before you can use it. If the seller claims it works, at least you'll have a shot at a good scope.
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    A/D and D/A cal failure, HP54501A scope

    The 54501A manual is notoriously unhelpful, as far as HP manuals is concerned. Do you have a manual? Page 4-7 (Section 4-13) DAC Refernce Adjustment. If you don't have a manual, here's the basics: (You need an ACCURATE, DVM) Invoke 'Service Menu' by pressing front-panel "UTIL' key, then...
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    jvc auto shutdown

    Since you can't see the menu on your screen, I'm thinking you have a circuit problem that will require repair. I can't think of an easy way to diagnose a problem like that without troubleshooting the electronics with the schematic in front of you. One last thing I'm wondering about: Was...
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    jvc auto shutdown

    This may not help, but it's what I would try. Are you sure your television is tuned into whichever channel you are trying to see? Are you sure your television was built to receive the type of signal you are trying to view? (In the U.S., the television stations started braodcasting a digital...
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    Broken pot on amp

    Don't do that. The pots are controlling separate circuits and you'll damage them or shorten their life by tying them together. Do you have an ohm meter, people call them DMM or DVM's? You can measure the resistance of the working pot, and then you can buy a replacement for the broken pot...
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    Hello All

    Greetings, and welcome. What other subjects could possibly be more exciting and interesting than electronics?
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    funny demotivational pic

    The kids aren't any dumber, their parents will just sue now. I liked Slim Pickens ride, in Dr. Strangelove best.
  18. S

    What is this box looking thing??

    With the two pictures, I vote with KJ6EAD. The covered section is probably a transformer. It's probably a high current power supply. But CocaCola and KJ6EAD are right, it's going to get pretty toasty in operation.
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    Understanding current and voltage flow

    The visualization of the direction of current flow depends on if you're trained as a technician or as an engineer. I've had plenty of run-ins with engineers in discussions about this. Technicians are trained to think in terms of electron flow, engineers are trained to think in terms of...
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    WD40 ok as switch cleaner

    They call the type you want 'residue free'. I don't know what else you have in close proximity to the pot. Some cleaners actually melt plastic, I'd look for one marked 'safe for most plastics'. I sprayed a can in a clock radio volume control knob one time, and melted the housing of the alarm...
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