Recent content by utilisateur
  1. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    Good news! I hope it stays this way Thank you!
  2. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    Quote: Originally Posted by amb A small difference between R34 and R35 is ok, but 20mV seems excessive. Try measuring the resistance these two resistors (power off) to see if there is a discrepancy between them. If not, power up and check the voltage across R28, R29, D9 and D10. What do...
  3. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    What consequences are there from the 20mV difference between R34 and R35? And what could cause this behaviour? Q17/18 are not the culprit i replaced them and it did not change anything As said there are no immediate audible effects.. i would like to know whats going on there as the amp...
  4. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    I cant see how most of the BJT on both my boards could be dead To make sure the replacements do well, what else can i check ,considering they are not dead short but fail the reverse test as described above ? Wow, after trying to get a better understanding of the schematic i went ahead to...
  5. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    Quote: Originally Posted by amb Yes, you can test the BJTs. Thanks i will test them Now a substantial amount of the BJTs measures around 1,5 or 1,8 in the reverse direction and some fluctuate slightly before my meter settles above the range.. In diode check mode my meter reads 1...
  6. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    I measure 28,2V/-28,2V on both boards and Q1-4 are soldered according to the information on your website! Can i check the small signal transistors in circuit, except checking for shorts(there are none)? Can you read anything explicit from the measurements? These were those that were the...
  7. utilisateur

    Texas Instruments OPA2134PA vs. Burr-Brown OPA2134PA

    I think TI bought Burr-Brown in 2000 or 1999 , so i'd just guess they are the same.
  8. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    Quote: Originally Posted by FallenAngel Quote: Originally Posted by utilisateur View Post Jeffs Kit really is very convenient! And makes it that much easier for people to take on projects they don't know how to debug. Quite true .. Personally i only attempted seeing it as a...
  9. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    Quote: Originally Posted by paaj Just ordered the GJA kit (I'm not really into the whole DIY gathering stuff thing ) and see how far I can get without blowing all up. Jeffs Kit really is very convenient! Quote: Originally Posted by utilisateur So when i try to do the...
  10. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    Thanks I quadruple checked as that had happened twice before, and just rechecked , they are definitely in the right order and connections are good
  11. utilisateur

    Looking for a mini connector...

    Lemo and Fischer make shielded microconnectors in different styles aswell. They have coaxial connectors , pin connectors in multi and single contact form, i think the smallest plug is ~6,5mm in diameter, but i might have overlooked something
  12. utilisateur

    Roll Call: Who's building, built, or thinking of building a beta22?

    I'm resurrecting my β22 boards and have some setup problems I bet the answers are already somewhere in the headwize thread but headwize is down So when i try to do the initial setup i cant adjust the Voltage across R9, VR1 makes minimal changes i have 1,3V across R9 with VR1 turned fully...
  13. utilisateur

    Foobar 0.9.6.1 on Windows 7 (Emu 0404USB)

    It's running fine! Emu drivers work without a flaw , have yet to try recording and digital in/out though. Foobar is also running without a problem I have not been around for a month or two and have my focus on other things but i justed wanted to let you know in case anyone wonders about...
  14. utilisateur

    Help me win a flightticket - win something cool and usefull

    2 hours left !! haha ( nice smiley additions! )
  15. utilisateur

    Help me win a flightticket - win something cool and usefull

    I somehow managed to sell my soul for a local contest giving out flighttickets and some money.. Well now that i´ve done so i could aswell just win right? If you want to help me win you can vote by clicking You get 60 secs to show something and the "best" of each town wins. To see...
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