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  1. (*steve*)

    Samsung PN60F8500 Plasma TV power board

    Try gently prying that gunk away with a small screwdriver. Depending on its texture you may also be able to cut it with a craft knife to make this step easier. Be very careful not to damage things as you do this.
  2. (*steve*)

    Soldering wire to metal

    Have a look at a few YouTube videos about soldering. I think you are probably not correctly heating the joint, possibly compounded by failing to tin the wire first. Your first task is to strip a small section at the end of the wire. Then twist the stands together. Then heat the end of the...
  3. (*steve*)

    Soldering wire to metal

    Have you ever soldered anything before? (I guess the answer is no from your original post) Are the wires you're trying to solder tinned? Could it be enameled wire that you've not taken the insulation off? Can you show us a picture of the wire?
  4. (*steve*)

    Soldering wire to metal

    Show us the other side. Are they soldered onto that board?
  5. (*steve*)

    Low power distance detection

    Oh, your technique will work if you can fit an atomic clock at both ends of the link. It may not be exactly "low power" though.
  6. (*steve*)

    Low power distance detection

    What distances are you contemplating? Bluetooth 4 implements a tour of distance measurement based on signal strength. There are many devices exploiting it to help you find your keys etc. It's pretty unreliable in determining an exact distance but it may do what you're after if you just want...
  7. (*steve*)

    Garage Door Relay

    You can probably find a similar relay from many sources. If you're in the US, then try mouser, digikey, or any of the other online retailers. Is this a problem with the relay sticking? Typically the 2 relays to cause the door motor to reverse, so maybe it's not that.
  8. (*steve*)

    Hdd Switch

    In the past I've had quite a few hard drives running at once. You should be able to find a tool to tell the drive to spin down after some period of inactivity. I reset that to make things a little quieter and to reduce the stress on drives that had to be on, but were often accessed only once a...
  9. (*steve*)

    Need to know suitable value of capcacitor for my PCB

    If each winding if rated at 8A, then the max continuous current you can draw from the DC supply is about 5.5A, however the nature of many amplifiers if that they draw power from each rail alternately. Also it is very common for amplifiers to have somewhat underrated power supplies because music...
  10. (*steve*)

    Samsung PN60F8500 Plasma TV power board

    Rapid and immediate blowing of fuses in a SMPS is mostly caused by the chopper transistor failing short circuit. Another possibility is the bridge rectifier failing short circuit. In either case I'd replace the rectifiers as they've been highly stressed. And remember to discharge any high...
  11. (*steve*)

    Parallel Bridge Rectifiers. .

    4 x 2A diodes is *exactly* the same as your 2A bridge. Did you mean 4 x 4A diodes?
  12. (*steve*)

    Monitor repair

    When you say "check", do you mean more than just "looked at"? Have you confirmed there is power at the input? Is the power supply turned on and off with a switch or a logic signal. If the latter, and that's fairly common these days, have you confirmed that this signal is present? In order...
  13. (*steve*)

    Parallel Bridge Rectifiers. .

    OK, let's go back to basics. What is the load current? If it's up to 1A you can use either the 2A bridge or 4 x 1A diodes. If it's up to 2A you can use the 2A bridge If it's above 2A you can use a pair of 2A bridge rectifiers, each with a pair of 0.1 ohm resistors on each of either the AC...
  14. (*steve*)

    Parallel Bridge Rectifiers. .

    Oh, I'm assuming the 2A rectifiers are bridge rectifiers. Is that correct?
  15. (*steve*)

    Parallel Bridge Rectifiers. .

    In general it's a bad idea to parallel semiconductors in this manner. However if you connect three of these 2A rectifiers in parallel and place a 0.1 ohm resistor in series with each AC input they will share current reasonably well. 1A diodes are not a better solution :-)
  16. (*steve*)

    Need to know suitable value of capcacitor for my PCB

    Here is an example of the sort of diode which may be suitable. http://www.digikey.com/product-detail/en/diodes-incorporated/6A10-T/6A10DICT-ND/8819 Without knowing where you are it's a bit pointless to suggest something specific as I don't want to send you on a wild goose chase for something...
  17. (*steve*)

    Need to know suitable value of capcacitor for my PCB

    What current is your transformer rated for? Alternatively, what is it's VA rating? The reason I ask is that the max DC current you should draw is 70% of the rated AC current.
  18. (*steve*)

    Need to know suitable value of capcacitor for my PCB

    Well, the other three diodes are 1N5408, so you'll have to replace all 4 of them.
  19. (*steve*)

    DVD

    Ae you using the program "FormatFactory"? If so, the following explanation applies: "Setting the aspect ratio preset to "Fully Expand" results in the video displaying with the source's original aspect ratio, no matter the resolution, no letterboxes"
  20. (*steve*)

    smart home innovations

    Sure, tell us what your skills are. We may be able to help you learn how to do some of this yourself. If you want someone to do all the design work and give it to you then you need to be prepared to pay.
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