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  1. dave9

    Amp repair around SW Virginia

    ^ No, nobody knows that this is specifically what you meant. We're big on what you write rather than what you don't. ;) I suggest you check out local repair shops on the yellow pages or craigslist because the odds of someone here being near to you are slim, but I suppose it didn't hurt to try.
  2. dave9

    Amp repair around SW Virginia

    That's a pretty vague request, that it isn't specifically broken, just needs "gone over and tweaked". It seems like an invitation for someone to just take it, sit on it, and hand it back and charge $$$. If it had specific problems those should be handled on a case by case basis. If he is...
  3. dave9

    Running house LED lights on AC

    You took apart what specific light? You measured how for the LEDs and how from the wall? I suppose it is possible, there are some terrible generic designs coming out of China, but I do not think the results are accurate if you measured for any current model major brand light. Depending on...
  4. dave9

    Inverter generator

    No I haven't, and I would be looking at trying to find the component(s) on the inverter board that failed and replace those with same if not more robust part(s) so it is less likely to fail again, or is it encased in potting compound so you can't get to it? I don't know a lot about Generac...
  5. dave9

    Too good to believe...?

    I never know what to believe on Chinese direct-ship products. Sometimes the specs are outright lies. Sometimes they are creative marketing even when a scientific mind feels that stretch can't be valid. Sometimes there is a convenient excuse why the spec is wrong. Sometimes they practically...
  6. dave9

    Whirlpool washer CCU AAWCB-003 schematic needed

    ^ To some extent I'm seeing the opposite in the US, that no matter how much you pay it may not matter, that the cheaper appliances lack the computer controls and thus lack the circuit boards that end up failing in less than 10 years. It is a very strange state that my older appliances may...
  7. dave9

    Running house LED lights on AC

    ?? Maybe in Scotland the lighting circuit is separate, but it is not this way in the US. In the US it is most often a circuit shared with the wall outlets in the same room at a minimum, except in areas like bathroom or kitchen where there might be some outlets on a separate ground fault circuit.
  8. dave9

    Running house LED lights on AC

    It might help if you gave us a link to similar, if not the exact lights you have. A 60V, 10 x 6V LEDs, seems similar to some standard E26 ~ 10W bulbs I've taken apart. Those are definitely not losing 5-6W on conversion, more like a 85% or higher efficient SMPS so they are losing under 2W. You...
  9. dave9

    Whirlpool washer CCU AAWCB-003 schematic needed

    $22 delivered https://www.ebay.com/itm/AAWCB-003-Kenmore-Whirlpool-Control-board/132732607248
  10. dave9

    Pedal powered generator

    They will hate you for attaching bullsheet to things they would otherwise enjoy. If you want them to get more exercise, limit their game time and/or enroll them in sports. A charging system is very easy given specifics of the components, but this wild tangent of control is not so simple. Hey...
  11. dave9

    PWM - Potentiometer ohm importance...

    In a SMPS, anything that adjusts the output is adjusting the duty cycle. If you want a better answer, you need to get the controller chip part # and look at the datasheet to see if it is on a control line or the feedback loop. Are you just trying to learn how these work in general or do you...
  12. dave9

    Potentiometer Lubricant

    Yes it can be put on the carbon tracks but excess should then be wiped off with a paper towel so only a slight residue remains, or for blind tracks you can't get to, use their spray 5% formula instead of 100%.
  13. dave9

    Recommendations for inexpensive wired headphones?

    This topic looks a little suspicious like someone from a marketing department is using multiple new accounts to try to create buzz about something. Plus how could you find that video "some days ago" when it was only posted yesterday on youtube?
  14. dave9

    Issues with vintage JVC CRT TV

    The world has moved on. TV tubes have a finite lifespan, what are you going to do when the tube wears out even if you repair the rest? They are wasting a lot of power for what they do. Suppose you could make them last forever, magically, without any effort on your part. Would this be a good...
  15. dave9

    How to charge li-ion batteries

    I don't understand the question. Laptop batteries are typically 18650 cells. You can buy chargers capable of charging those on Amazon, a dozen models at least. If you want to charge them in the receiver as a series of cells then you need a hobby charger capable of a series of cells, a...
  16. dave9

    Power Google Home Mini

    On the home mini it is just a power supply. Yes I was intending that the car USB adapter be on the end that the mini was on, with the assumption that hopefully it would have enough margin to regulate 5V after the 12V had dropped over the 60ft run. Wait, "inside the wall"? I would just string...
  17. dave9

    Good, economic epoxy mixer?

    Clear plastic medicine/pill cups, with the markings on the side. Example: https://www.amazon.com/HomEquip-Graduated-Medicine-Non-Sterile-Disposable/dp/B01MZ64XGJ https://www.amazon.com/Dynarex-4252-1-Medicine-Polyethylene-Count/dp/B01N6MXK13 Similar cups come in larger sizes too but often...
  18. dave9

    Power Google Home Mini

    Is it possible the USB car charger is poor quality and/or fraudulently rated for higher current than it is really capable of? I would measure its output voltage voltage under load, while the mini is doing something, say streaming music over wifi and playing it at high volume. Assuming it will...
  19. dave9

    How do i connect a digital meter to solar panel to read amperage

    Pretend that the "Power/Charger" in this picture is the solar panel, and the load is what it is powering or the battery you're charging with it. https://robu.in/product/0-28-inch-digital-voltmeter-ammeter-dc-100v-50a-led-amp-volt-meter-shunt-red-blue/ Where you get your "Supply Power DC4-28V"...
  20. dave9

    HP CM1312nfi MFP Printer network port dead

    At the risk of asking a silly question, are you SURE? I thought that was what that blue cord was in the picture, and owner reviews on Amazon mention the USB port, as does the manual, pictured and on page 46. http://h10032.www1.hp.com/ctg/Manual/c01424292
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