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  1. S

    No Color. Black and White Picture

    Yeah. It's possible you have a circuit problem, but it could just as likely be something simple like a knob. I used to work in a TV repair shop during the CRT days. I'm trying to remember the quick things to check. There was one pot that was the first thing to check on this type of a problem...
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    Please Help?

    If you don't have the operator manual, Google it. DVD/Blu Ray players have become so unnecessarily complex that no one can keep up with the many functions they now employ (depnding on the mfgr). If you don't get what you need from a Google search, contact the manufacurer website,they probably...
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    110v AC and 120v AC Inverter

    I don't know what the specification is, but I've lived all over the U.S., and I've seen wall outlet power anywhere from 109VAC to 127VAC. Anything you buy and use in the U.S. can be marked, 110VAC, 115VAC, 117VAC, and 120VAC, and any of them work fine from any wall socket. I don't think you have...
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    Cable/plug damage prevention.

    There are potting kits available commercially if you're interested. I hate using the stuff because if I ever do want to go back in and work on the contacts, it's a pain to remove. I'm not familiar with your specific type of connector, but If you plan to just do a permanent fiix where you don't...
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    Please Help?

    Sounds like a command signal problem. Has your DVD player got some kind of freeze-frame function that's activated? Or is there some type of selection on the menu that's enabled (like TiVo, or any other possible automatic function that's enabled at turn-on?) It's possible this is a circuit...
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    Does anyone recognise this symbol?

    I can't say with certainty, but I'm with davenn on this. The oval circle is the generic symbol for a fuse, the resistor in the middle of it would indicate a fusible resistor to me. With engineers being trained us U.S. schools, European schools, and wherever the engineers are coming from for...
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    Why does my amp do this?

    Take a look at the solder connections to your speaker output jacks,and the condition of the jack themselves. This sounds like the problem davenn mentioned, but as long as you're inside looking around, the speaker output jacks in the amp should be looked at too. Oxidation, corrosion, or even a...
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    Slow day at the Forums...

    It's Saturday here in the U.S., I usually don't even get on the computer on the weekends. So I think that makes it tomorrow for half of us. I think the weekend explanation is the most likely. I usually am out doing non-computer stuff on the weekends.
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    KLH R3000 Stereo Receiver wont turn on.

    Hopefully it was just the capacitor. When I lose a small innocuous componet like this wthout explanation, I always follow the trace on the board to the connected components, just in case something ahead of the cap failed, which resulted in the destruction of the cap. It's pretty common to just...
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    Power supply

    I would have approached this the same way you did, suspecting the electrolytic caps because of the unit's age. Having done that and knowing you have a virtual short, the next thing I'd do is disconnect power, and run a quick continuity check with an ohmeter, looking for a shoted (or 'leaking')...
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    How to delete an old email address on Google account

    I can't help, but I'll add my pet peeve about gmail. Anybody I ever sent an email to gets added to that left column lower block on the screen, and there's no way to get rid of it. When I email a company for information, and a woman's name from that company appears in that block, my at-home...
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    VIP???

    *steve* said mine was for 'Very Interesting Perspective", right before he told me I was wrong. (That's a joke. He only thinks that, he never actually said it)
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    Voltage Regulator IC

    Your original part is an 8-Pin DIP (Dual In-line Package), and they sent you a surface mount component. It's possible that the electrical characteristics are similar, just the physical size/package is different. That is a very common issue nowadays. You need to pay particular attention to the...
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    What breaks when you "gently" drop something?

    Don't forget to check the battery compartment if it has one. A lot of times on impact, the batteries shift, bending the battery contacts on the toy, or misaligning them. That's the first thing I check after something like this.
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    Bread Boards & Wishful Thinking?

    Hey, I thought everything was going wireless now.
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    Hilti tools service lights

    Your speculation sounds pretty close to me. EXCEPT, it would be pointless to build this shut-down circuit and integrate it into to those tools if it could be easily over-ridden. That 'flashing light', is bound to be a coded signal; not just a bright flash. You'd need their coded signal to...
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    need help fixing my record player

    What davenn said. Can't tell much from what we can see, but it looks like your power transformer is still there, that's good. The bad part is that you mentioned burn marks under one of the boards. You'll probably be able to see a damaged electronic component or components on the board directly...
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    Please Help? Vacuum Tube TV

    Yeah. The first thing you'd have to do is pull the vacuum tubes and test them, which isn't easy to do these days. Very few tube-testers around. Then you'd have to get replacement tubes, which aren't all that easy to find these days either. Then you'd have to troubleshoot the TV to find out...
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    Wein bridge vs. Phase shift oscillator

    What's the application?
  20. S

    Brushless motor and ESC

    Sometimes I don't know whether to state the obvious because it's remedial information or not. We don't know how much background people have when they ask questions. 1) Brushless motors are DC. An ESC is generally a DC to 3-phase inverter. Did you apply AC or DC to the ESC? 2) I don't THINK...
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