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  1. S

    Happy Fathers Day!

    Well. At least the other side of the world GETS a Father's Day. Wouldn't want you guys left-out.
  2. S

    Denon AVR2105 Help Please if Can? New Member Hello to All.

    I'd get those voltage regulators up to snuff, and then see if you still have a problem.
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    Finding IC datasheet

    Are there any manufacturer names or logos on the board that might help identify what the board was made for? Like davenn said, the IC markings are not helping here. You don't know what the board came out of, or what it was designed to do? Where did you get it and wht do you expect to do with it...
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    Turntable Spinning Fast in Reverse

    Are you paying attention to whether your 12V adapter is AC or DC Were the wires cut before or after the transformer , (trying to figure-out if you're inserting the 12v before or after rectification).
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    Turntable Spinning Fast in Reverse

    You may have purchased one that actually has electronic component damage this time. If you look on the unit's identification plate for the manufacturer and model number, we might be able to find a schematic on it and offer some assistance. When you opened the chassis up, did you look around...
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    gas detection system

    Well hevans1944,it sounds like he got enough informtion from your extensive explanations to be satisfied, anyway. Field instruments I've used were primarily for for toxic or explosive gases. We'd take a sample of unknown other gases and let the lab run them through a gas chromatograph or atomic...
  7. S

    gas detection system

    Duh. I thought he was looking for leaks in a closed system. It sounds like maybe I was on the wrong track? He's trying to analyze which particular gases are being leaked?
  8. S

    dead tv.

    Brown burn marks on the board would indicate a problem area that should be checked. This would be a whole lot easier if you can Google your TV make and model number, and see if you can find a free schematic of your TV. You read 320VDC, so I assume you have a VOM (Volt Ohm Meter) (Also sometimes...
  9. S

    Variable switch

    Emergency 'Stop' switches sound like what you're looking for. Overkill for a small 9V project, but I'd check on-line for vendor catalogs to find what you're looking for. Digi-Key, Mouser, Parts Expess, Bigger vendors probably wouldn't sell to an individual, but if you check them you can find...
  10. S

    dead tv.

    If you've got a dead TV with no bad fuse, something inside burned open-circuit. Not always, but often when something 'open's, you can see physical damage. Did you look around the insides and see if you can see any burn-damage to any of the components. This isn't a sure-fire fix because damage to...
  11. S

    Old Tube amp

    Don't forget to find somebody who has a tube tester, to make sure those tubes are working properly.
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    sensor help

    Probably the simplest thing I can think of is a tilt switch. If the tip of the rod moves downward, the switch could close a circuit to a light bulb or a buzzer. This probably wouldn't work if you're holding the rod and moving it around. But most other sensors/switches I can think of would be...
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    gas detection system

    I'm not familiar with systems designed for this. I'm assuming you're talking about a pressurized gas, and not a gasoline fuel system. If so, what about a pressure sensor for your system? A digital display (or attached to a process control system) should tell you when you have a leak. If this...
  14. S

    Need some help about this edge meter

    I've always known them as being called 'edgewise' displays. I see a lot of instruments that use them.
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    Name that switch!

    I think me and davenn are techs and therefore think like techs. My thought is that the user use davenn's advice to simply fix the problem. If on the other hand, the user is thinking live hevans1944, that he intends to study the problem, I was wondering if there might be something like this...
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    DPDT SWITCH ON-ON to ON-OFF

    Your first imprssion was correct. Simply wire the circuit using one half of the switch for 'on''. Sliding the switch the other way will turn 'off' your circuit.
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    Davenns' 1000th post

    Is that an Old English U.S. 1,000 posts? An Austrailian Metric 1,000 posts? Or a Chinese unit of measure posts? Thanks for all the help for me and everybody else here over the years, Dave.
  18. S

    repair desktop fluorescent lamp

    The way my desk lamp works, is that I have to press and hold the push-button for a few seconds. (Then release it) The voltage goes to the ballast that fires the lamp, and that takes a couple seconds. Is this a new lamp you're unfamiliar with? Maybe that's the issue. My second suggestion, is to...
  19. S

    Missing cord, irregular size, help?

    That's a pretty standard 120VAC power cord for the U.S. 3-conductor power supply cord. IEC 320-C-13 or IEC 60320-C13 should do the job. Google them.
  20. S

    electronic apps

    No, but when you get one, you should also get a patent on it. It's easier to be an electronics overlord when you're rich.
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