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Recent content by Desperado

  1. Desperado

    Cbm 2001 Pet strange boot

    I am desperate!!!
  2. Desperado

    Cbm 2001 Pet strange boot

    Yes Dave, CHOP button is pusched IN!
  3. Desperado

    Cbm 2001 Pet strange boot

    A10/3 3,94V A10/4 5,1V A3/12 0,5V A3/13 5,1V A3/8 4,1V A3/9. 0,5V
  4. Desperado

    Cbm 2001 Pet strange boot

    seems ok A3/13 OK A3/12 0,2 V ??? A3/9 0,2V ?? A3/8: strange signal...i can see double horizontal lines in the top:
  5. Desperado

    Cbm 2001 Pet strange boot

  6. Desperado

    Cbm 2001 Pet strange boot

    https://www.youtube.com/watch?v=3Q9KxQXQoOg https://www.youtube.com/watch?v=i5Z0Hl5tbIw
  7. Desperado

    Cbm 2001 Pet strange boot

    I can see this on UB2 pin 6 :(
  8. Desperado

    Cbm 2001 Pet strange boot

    I am desperate!!! This is the best setting to see a stable waveforms :((( This scope is a sh.. !!! Maybe bad ls244???
  9. Desperado

    Cbm 2001 Pet strange boot

    Ok now i have CH2 (connected with BA15) in botton half screen and CH1 in the middle....correct?
  10. Desperado

    Cbm 2001 Pet strange boot

    Ok, can be good now?
  11. Desperado

    Cbm 2001 Pet strange boot

    This is best setting to see BA15 on ch2 :(
  12. Desperado

    Cbm 2001 Pet strange boot

    Can i take Ba15 from this connector?
  13. Desperado

    Cbm 2001 Pet strange boot

    Ok...so...i fix ch2 probe on BA15 and after i use ch1 to check signals on?
  14. Desperado

    Cbm 2001 Pet strange boot

    but probe on ch2 must be fixed on the pin of the ic?
  15. Desperado

    Cbm 2001 Pet strange boot

    Ba15 on cpu ord ud2??
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