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  1. Jeff C

    SOLVED Magnetron screw up

    No problem - I should have known better, but see my reply above…….
  2. Jeff C

    SOLVED Magnetron screw up

    Yeah, that’s what I thought. Scratch one LED. Curious thing (for me, at least) is that on the Magnetron schematic, it shows power coming in direct to LED 1. And when I test the voltage at the LED 1 pad, it reads 9v……….
  3. Jeff C

    SOLVED Magnetron screw up

    Took it out. Doesn’t light up either way on the battery (or my transistor tester). Had another LED, tested it on the 9v battery - brief spark and now it doesn’t light up either way. 😔
  4. Jeff C

    SOLVED Me again...........Tayda EA Tremolo PCB not working

    Chuck, in case you weren’t following the Magnetron saga, got it fixed in “only” 50 posts. I’m improving even more! 🤪🤪
  5. Jeff C

    SOLVED Magnetron screw up

    Success! Woohoo! Pedal works with full effects! Thank you guys so much!! My first troubleshooting experience with the Cobalt Drive took a record 423 posts to solve; then the EA tremolo 79 posts; and now I’m down to 50! Who said you can’t teach an old dog new tricks? Two little codas: LED...
  6. Jeff C

    SOLVED Magnetron screw up

    👍
  7. Jeff C

    SOLVED Magnetron screw up

    I try to connect the clips to unused space on the board, but I guess I should just not use that stand. By protection diode, I guess you mean D100? If so, I do indeed have continuity between D100 and R101 and C101+. So, I don’t screw it up again, do I just switch the jumper to the other end of...
  8. Jeff C

    SOLVED Magnetron screw up

    So, I jumped from the left side as shown in the pic (but on the solder side of course). seems correct but let me know if I erred. And yes, I SHOULD have gear like that but what I’ve been using is in the second pic (you can see my jumper there) and it doesn’t work very well and I often have to...
  9. Jeff C

    SOLVED Magnetron screw up

    Put the new one in. No continuity put a jumper on. Continuity to both 100 and 101. Voltage is weird, though. 9v on both sides of 100. 9v on the R101 side connected to 100. 0 volts on the other side. 9v on C101+ side. 9v on IC1.1-3. No audio out…..
  10. Jeff C

    SOLVED Magnetron screw up

    Well, got the 100 out. Looks like the pads are still there but no continuity to either C or R 101. Looks like a jumper may be necessary……Any advice on that? Solder in the new 100 and test? If still no continuity, then do a jumper between R100 and R101, then test to both 101’s? I tested...
  11. Jeff C

    SOLVED Magnetron screw up

    Will do! Taking a break. Back later……
  12. Jeff C

    SOLVED Magnetron screw up

    101 yes, 100 no.
  13. Jeff C

    SOLVED Magnetron screw up

    Ok, really confused and showing my amateur status. With no power to the board, I get no continuity. I apply power and I get it but only if if the red lead is on 101. Solder side and leg side.
  14. Jeff C

    SOLVED Magnetron screw up

    Just reflowed them…..again. No continuity On the leg side, continuity on the solder points,
  15. Jeff C

    SOLVED Magnetron screw up

    solder points. can’t seem to get to get a beep between the legs……hmmmmm…. Check that, getting it now. Weird. And now not getting it. Very inconsistent.
  16. Jeff C

    SOLVED Magnetron screw up

    Yes, they are 47k. Did my readings again. 9v on both sides of 100, .22v on one side of 101 and 0 on the other.
  17. Jeff C

    SOLVED Magnetron screw up

    9v on both sides of R100. Good continuity between 100 and 101. And I have ground continuity on 101. Might I need to replace 101? I’ve reflowed it at least a couple of times……🤪
  18. Jeff C

    SOLVED Magnetron screw up

    Tks! I only get .22v on pin 5 as well. And sorry, I, getting .22 to one side only of R101.
  19. Jeff C

    SOLVED Magnetron screw up

    Yes, that’s right. Sorry. So it seems I’m lacking voltage on pin 3. I’m getting 9v on R100, nada on R101. .22v to C101.
  20. Jeff C

    SOLVED Magnetron screw up

    Tks! So, should I be expecting 4.5v on IC1.3 instead of .22? The only place I have more than .36 is on pin 8 where it is 9v.
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