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  1. S

    Smoke detector mystery

    As I said, I don't know how the detector circuit is wired. Don't you think you should be looking for competing circuit paths? Is this the only detector with the problem? Maybe the unit itself took a hit, or failed from natural causes. How did you run your 22 gauge wire to the unit? Any routing...
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    Smoke detector mystery

    I don't know how the detector circuit is wired, but I would assume that it operates (at low current) continuously. If you're using a thin gauge of wire for battery power, I could believe that the wire itself appears as a load in-line with the battery, to the smoke detector circuit. I suppose...
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    Aiwa NSX 3500 CD Tray problem

    One other thing to try first, is to unplug power to the unit to see if that clears any internal memory start-up sequence menu internal to the device.
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    Troubleshooting

    Do you do any electronic repairwork? Do you have any skills in electronic troubleshooting? The first thing I'd do, is open the chassis and blow-out any dust or animal hair with compressed air. If you have pets, a lot of times the pet hairs get into electronics and covers the components...
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    Technics SA-GX670 Left Channel

    I recently gave this input on a similar question about another model in a different post: I've seen this happen many times in older audio gear I've worked on. The speaker-select switch was worn or dirty. May not be the problem, but that's what I've seen often-enough to check. I'd check/clean...
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    The whole reason I am here... :)

    As a side-note: You replaced the fuse, and you blew the fuse AND a resistor this time. Replacing the fuse and resistor alone, is not going to fix the problem. You have some other electrical fault involving another component or the motor itself. Can you see any other electrical damage inside...
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    Highest sensor read question

    A variation on a 'sample and hold' circuit?
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    What could be the failure cause of a circuit when it works 18 times over 20 times

    That's not much to go on. I would guess one of your inputs or outputs is hanging-up (not returning to it's 'rest' state). Without more information, I'd take voltage readings when the circuit is working, and then again when it hangs-up,to try to isolate the problem. Do you have any floating...
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    US wall switch alternative

    This isn't what was asked for: on-off in the same direction, but since I often find our posts on Google searches, I'm submitting this additional information: These two switches are regualr wall toggle switches with a return-to-center momentary action: But you flip one way to turn-'on', then...
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    Has Miniaturization Killed the Hobby Enthusiast?

    I'm nobody, but I'll give my opinion. I'm in my 60's When I was a kid, if I wanted a particular electronic circuit, I had to build it. When my kids were born, I built them electronic toys, but soon found them disinterested in what I made, because for $5, they could buy a toy that had many...
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    Sony STR-DH820 A/V Receiver Not Powering On after some time of disuse - Help!

    Sony used to make superior stuff, then they started letting the Chinese build their stuff. I've had nothing but problems with the Sony stuff, made in China that I bought lately. The first thing I'd do, is contact the Sony on-line technical support group with your model number. They've got...
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    Cannot figure out the connector name/model

    The fancy connector type with the locking tabs on the sides makes me think they might be proprietary to the company who made the board, I don't recognize them. You may be stuck with just getting a size that fits. The problem being that if the connector doesn't lock in place, it might become...
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    Motion captor (with ball)

    If you're interested in the rolling-ball type tilt switch, these are a couple of mfgrs: C & K Switch RB Series Rolling Ball Sensor Switch Mountain Switch also makes rolling ball tilt switches.
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    How do I unclip this wire harness / clip or whatever it is???

    I second that. *steve* identified the connector in your picture as one that is soldered to the board. It is called a 'header'. I know you're having contact problems and you want to fix them, just remember as *steve* said that will be a delicate operation if you're not experienced in component...
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    US wall switch alternative

    They're called 'momentary' switches. I don't know your application. Unless you have an outside circuit to maintain circuit continuity after you flip your momentary switch, take care in your switch selection, to be sure that you don't buy a switch for your circuit that actually momentarily turns...
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    Securing component to heatsink

    There are mica electrical-insulating wafers, and blue thermal-heat transfer wafers. If you need the mica, electrical-insulation wafer to isolate the heat sink from the TO-220 component, be sure to use nylon fastening hardware, not a metal screw (which would defeat the mica wafer insulator). Some...
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    Old folks in-home personal alarm system?

    That IS the most logical, practical solution. Unfortunately, I am dealing with the human factor here. Two people who can still get around, and have a damnable aversion to admitting that they can't fully-function. Having a personal alarm is tantamount to saying 'look at me, I might need help'...
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    Motor runs, but not under load

    Alright, throw-in corrosion of the mechanical parts as a possible issue. My bet, is your bearings in that motor need to be replaced.
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    3 pole wireless switch

    I know I must be dense because I still don't know for certain what you're dealing with. If you've got thermocouple wire running up the stack for locations # 6 & 7 (from your read-out console), I'd just check with one of the following manufacturers for a switch box at your console. Cole-Parmer...
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    3 pole wireless switch

    aaron1987, we're getting closer to understanding what you need, but I'm (at least), not there yet. So, you've got 'lines' that run all the way up the stacks. Are these thermocouple wire 'lines', or lines to thermocouple transmitters (that operate on the frequency of concern to you)? Maybe the...
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