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Recent content by jhh

  1. J

    Mospec rectifier info.

    Even to me it's the cheapest made thing I've seen and I have about 10 old supplys here. ( I go to the trash recycle place and get old computers for the magnets in the hard drives for my wind generators that's why I have so many.) Some faults I think it has is no pri. filtering coil, tiny...
  2. J

    Mospec rectifier info.

    This setup is in a 550watt ChiefMax and I think it's a design flaw from the information I've seen on it (all bad). That why I'm using it to try to learn how to trouble shoot power supplies. I would never use it again haha
  3. J

    Mospec rectifier info.

    It did fail with maybe 6 hrs. total computer use, ( was in cp longer but the cp was not used much) so maybe your theory is right ?
  4. J

    Mospec rectifier info.

    re mospec Oh that makes perfect sense now. I set and looked at this thing and nothing made sense, why I couldn't see ( leg 1-2-3 ) I don't know. I've only been fooling with electronics for 2-3 months and than only what I can find on google, not like having a person to ask when you don't...
  5. J

    Mospec rectifier info.

    Re mospec rectifier I got the data sheet for this rectifier but in my limited studies I've not seen anything like this, the other rectifiers had the legs marked ( cathod , anode, cathod, this I know how to test) but this says (cathod, anode, D= double) ?? On the drawing it shows 6 diodes with...
  6. J

    Mospec rectifier info.

    Hi Steve I think I understand now, as the indicator swings to the right and stops thats where charge starts and when it swings back to the left (or infinity) thats when it's full charged??? But back to the rectifier I don't understand the test you said to do as it has 3 legs, on a regular diode...
  7. J

    Mospec rectifier info.

    Hi, is there any way to test this rectifier with a multimeter if not how can you tell if it's ok?MOSPEC F12C20A Dual Fast Recovery Power Rectifier Common Anode. 12 Amperes / 50-200 Volts. TO-220AB Case I tried to test it same as regular 3 leg rectifiers and got wierd readings, sort of like a...
  8. J

    Sparkle Power switching power supply

    re power Pictures of supply I tried to get here earlier.https://www.electronicspoint.com/attachment.php?attachmentid=296&d=1264805693 https://www.electronicspoint.com/attachment.php?attachmentid=297&d=1264805820...
  9. J

    Sparkle Power switching power supply

    re power I didn't think the pictures I did today come up and deleted the post. Well I went to youtube last night and watched a video on the correct way to repair a switching power supply, so the guy turns on the power and it starts to smoke so he kills the power and said aha theres the problem...
  10. J

    Sparkle Power switching power supply

    re power https://www.electronicspoint.com/members/jhh-albums-power-supply.html Don't know if this will work but this should be the pictures. The FET and fuse is laying on the meter and as you can see left and middle legs was where the 1/8 w resistors were. The big (I think 2 w resistors)...
  11. J

    Sparkle Power switching power supply

    RE Sparkle Power switching power supply I'm sorry I didn't explain very well. The left and middle legs of the mosfet have been cut off and very small resistors( 1/8 watt) have been soldered to the shortened legs of the mosfet to replace the legs.Hard to explain ha ha If you unsolder the mosset...
  12. J

    Sparkle Power switching power supply

    HI I have a FSP200-61GT SPI switching power supply with a burned out Mosfet on the high voltage side. There is (I think) a 2 watt resistor on both sides of the mosfet. But they test good, my problem is the Mosfet has a 1/8 watt resistor 0n the left leg and I think it had one on the middle leg...
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