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  1. H

    Switched Mode Power Supply/Switching Power Supply (SMPS)

    Photos of the vertical PCB.
  2. H

    Switched Mode Power Supply/Switching Power Supply (SMPS)

    Ok. I took photos of the components attached to the center heat sink and the stand alone heat sink. For the center, number 1-13NM60N (Q801), 2- a diode-checks good, 3-F9NK90Z (Q501). Attached on the other side of component number 3, is a W9NK90Z (Q351). Q351 was definitely bad when I started...
  3. H

    Switched Mode Power Supply/Switching Power Supply (SMPS)

    Thanks again, Mr. Kapp. I will try our suggestion in the morning. If it doesn't work, and I mean activate that 52volt side, I won't be able to sleep. Just better to be hopeful and think it will, so I can. :-)
  4. H

    Switched Mode Power Supply/Switching Power Supply (SMPS)

    Thanks for the reply, Mr Kapp, however, this is a dual output voltage power supply. One side is 12vdc and the other is supposed to be 52vdc. Maybe I didn't explain well enough. The 52 volt side only has two wires on it (red and white) and a two pin plug. The 12 volt has 4 wires (black and...
  5. H

    Switched Mode Power Supply/Switching Power Supply (SMPS)

    Hi all. I have a question about a power supply. Input is 120vac. There are two outputs. One is a four wire 12vdc (two pos, two neg, hooked to a single pos and single neg output on the board) and the other is 52vdc (one pos and one neg). This thing runs a surveillance system (cameras and a...
  6. H

    Resistor Question

    Thank you, hevans1944. I actually did read about voltage drop and found it wasn't as intimidating as it originally sounded. Your last post summarized my understanding quite well. As far as being "more than you (I) need to know..." let's just say there is quite a bit that I do need to know and...
  7. H

    Resistor Question

    Just so you know, I have received replacement .56 Ohm resistors. My meter will display .6 Ohm and drop to .5 Ohm, back and forth. So I am going to conclude my meter is at least able to measure a resistor of less than 1 Ohm. I have an analog meter somewhere. The first one I ever bought and it...
  8. H

    WiFi Antenna Composition

    Hi all. Before I start taking this thing apart, because I am getting intermittent WiFi transmission and reception from it, can anyone tell me what I should expect to find when I remove that heat shrink from the antenna? Is there anything else inside there, other than what feels like a...
  9. H

    Need a little advice about Solder Paste's and Hot Air Soldering.

    Don't really concern yourself with which paste is the best. Most all of them are following product manufacturing guidelines and are making similar products with similar properties. Just look for a higher rated T4 solder with a rather low melting temp, like I mentioned above. The reason this...
  10. H

    Need a little advice about Solder Paste's and Hot Air Soldering.

    One of the bad things about solder paste is that it does not last as long as regular solder wire. I don't mean on a board, but in storage. It should be kept refrigerated and it typically has an expiration date.
  11. H

    Need a little advice about Solder Paste's and Hot Air Soldering.

    I disagree with Ylli. Hot air soldering and solder paste is great to work with, with SMD components. Very easy to use and the results are pretty impressive. Are you really talking about the Quick 861DW? A nice gun, but there are far less expensive ones out there, if you want to try one of...
  12. H

    Resistor Question

    Thank you again, Bluejets. I do use the resistance setting for resistors and the diode setting for diodes. The diode setting on my multimeter is also the continuity setting. I just have to push a button to get a tone for conductivity. Reading voltage drop is a bit past my level when it comes...
  13. H

    Resistor Question

    Actually, I just came back here to report that I am not able to duplicate the diode setting-resistance value claim that I made before. I only get voltage through the resistor, and not capacitance. And I only used the diode setting to confirm continuity through the resistor, not to obtain the...
  14. H

    Resistor Question

    Thanks guys, for the replies and information. When I used the term "open" I was referring to the passing of any current through the resistor. I did that part of the check check using the continuity (diode) setting on my multimeter. The display did not change from the one being displayed...
  15. H

    Resistor Question

    Haaaa....thanks for your reply, dave9. :-) It shows open with zero resistance. That is why I have to replace it and how I know it is bad. I wish I was as good as you and was able to tell if an electronic component was good or bad just by looking at a photo. I mean, that is a skill to have...
  16. H

    Resistor Question

    Are there any other considerations I need to follow when choosing a .56 Ohm (560 mOhm) 2W wirewound resistor replacement for one that is open? There are no color bands on the resistor. It does have .56 Ohm, 481, and 2WJ imprinted on it. I am guessing the 2WJ is the wattage and the .56 Ohm is...
  17. H

    Milwaukee Super Sawzall Intermittent Stopping

    Others have had issues with the power on/off switch causing your problem. Look at that as well.
  18. H

    Help reconnecting/soldering USB port that fell out of place

    Although I am nowhere near the electronics genius' as the other repliers to your post are, I DO have experience with screwing up traces with a soldering iron, so I will explain how to fix the problem you have now. The other guys are great at telling you what you have and what you have done...
  19. H

    Testing Procedure For this Component

    The AM/FM is working correctly. The drive is not spinning now and where I used to get "Loading/No Disk,Track Info" on the LCD, I am not seeing that anymore.
  20. H

    Testing Procedure For this Component

    Thanks again for your suggestions. Can you just tell me this about the above Block Diagram? I want to see if I have this right. The "Block" as depicted is the component (TS2576). The numbers contained in the boxes are the component pins. The supplied DC current going into pin 1 will...
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