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  1. Delta Prime

    Help needed to repair Rumble 500 V3 bass amp

    Sounds good.
  2. Delta Prime

    Help needed to repair Rumble 500 V3 bass amp

    Confirm please..this is not a crack.
  3. Delta Prime

    Help needed to repair Rumble 500 V3 bass amp

    Thank goodness. A game of light and shadows because this looks Damaged. Thank you for the updated photos.
  4. Delta Prime

    Charger fuse on the output side burned

    I cannot tell you for certain. My experiences is limited I am on the back side of 20 years old. I could be wrong; products and circuits are proprietary and protected only as a trade secret.putting "in-house numbers" on integrated circuits will make it much more difficult to reverse-engineer the...
  5. Delta Prime

    Charger fuse on the output side burned

    Yes U38 is destroyed looks like a in-house number to me.
  6. Delta Prime

    Help needed to repair Rumble 500 V3 bass amp

    I believe further inspection is required!
  7. Delta Prime

    Help needed to repair Rumble 500 V3 bass amp

    Forgive me the fault was on my end. the schematics did not show up until now. We will work our way back from the horn to the amplifier then the front panel display board if need be. So no need to verify test point values unless you want to... it wouldn't hurt. Solder side PCB Power amplifier...
  8. Delta Prime

    Help needed to repair Rumble 500 V3 bass amp

    Can you take a photo please. Do you have a multimeter? have you verified the test point voltage values on the schematic. Follow the procedure given. The schematics you provided are wonderful ; would you happen to have sheet three and four? I need to see your power amplifier and support...
  9. Delta Prime

    Trigger 12v relay with 3v source

    Thank you for your efforts.Make, model, of that unit and or link to where you have purchased it. Thanks.
  10. Delta Prime

    Help needed to repair Rumble 500 V3 bass amp

    You're welcome prematurely. Would you care to share those schematics? If you could photos if possible .thank you
  11. Delta Prime

    Fuel level switch

    Then your anticipating this... Go BIG BLUE! We're going to kill the buckeyes!
  12. Delta Prime

    Fuel level switch

    Quoting:Cool hand Luke! If it was anyone other than you Sensei... I would say."Keep on looking at the back of your head that's normally where the brains are kept." But I wouldn't say that to you. In fact I'll join you. :rolleyes: And I have told you N number of times now N+1. I am sober...Court...
  13. Delta Prime

    Trigger 12v relay with 3v source

    Welcome to Make Pro. More information is needed. In the schematic below is to show the idea the reason why the schematic includes 3 volts. What is powering that 3-volt LED is it 3 volts? 5 volts? You have a schematic? And you must realize you take one simple circuit and combine it with another...
  14. Delta Prime

    Component with no datasheet

    Yes I realize that. But sometimes nice members in forms like this contribute to the discussion and provide additional information. it was a long shot. Good luck to you!
  15. Delta Prime

    Component with no datasheet

    This is as close as I can get. But you have to sign up to get that data sheet. By the way cybernetics is also looking for that chip. If you find it...destroy it... They made a movie about it people!!! https://www.badcaps.net/forum/showthread.php?t=117560
  16. Delta Prime

    Fuel level switch

    What we've got here is... failure to communicate.(with the thread starter). Some men you just can't reach. So you get what we had here last week, which is the way he wants it... well, he gets it. ;) I love setting you guys up! you're so predictable.
  17. Delta Prime

    1000VA UPS

    Have you ever seen an fusible resistor FR1 fry like that? If you lead.... I may not follow..... If I lead you may not go..... But I think it is best if we get lost together.....
  18. Delta Prime

    Fuel level switch

    Welcome to Maker Pro I like the kids idea without the analog part. Go solid state relay.
  19. Delta Prime

    LM394 National Semiconductor 'supermatch' NPN pair

    Here you go buddy. A little snippet. It has become clear in the past few years that ultimate performance in monolithic transistor pairs was being limited by statistical fluctuations in the material itself and in the processing environment. This led to a matched transistor pair fabricated from...
  20. Delta Prime

    1000VA UPS

    Yeah the capacitor was collateral damage. But what I find interesting is I've never seen a fuse obliterated like that is was generating some heat ;I mean the solder pads blew off the board. The board itself carbonized! I bet when he replaced the output mosfet and install that resistor he turned...
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