Announcement

Collapse
No announcement yet.

Boss TU-2 won't turn on

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Boss TU-2 won't turn on

    Hello guys,
    I've got a Boss TU-2 that won't turn on. More precisely, it powers up fine (both with power supply and battery). I can also change the stream/cent and mode settings with no problem. But when I try to turn it on, nothing happens.
    The switch works well, I've tried it with another boss pedal. If plugged in, the signal passes through (as expected from a turned off pedal) so I guess it's not a power issue. It just won't turn on...

    Here's the wiring diagram: http://www.synfo.nl/servicemanuals/B...VICE_NOTES.pdf
    Can anyone give me a clue?

    Thank you very much

  • #2
    Looks like the micro and power are alive, so switching circuits (jfets?) or analog path (zero crossing w/hysteresis?) are suspect.
    If you're lucky the pcb-to-pcb (or is it ribbon) connections are just loose so worth cheking out.
    Do you have the scope and electronics faultfinding experience?

    Comment


    • #3
      The ribbon connections are good.
      Originally posted by darkfenriz View Post
      Do you have the scope and electronics faultfinding experience?
      Actually no, but I have some basic knowledge in electronics. So if you could give me more details on how to proceed, I'll try and do my best.
      I only have a multimeter but I could get my hand on an oscilloscope.

      Comment


      • #4
        First I'd check the voltage of the FXC signal on the pin14 of connector of either main pcb or cpu pcb. Does the level change when the pedal is turned on and off?

        Also analog signal levels when playing notes at IC2 pins 7 & 1 (main pcb) can give some answers.

        Comment

        sisli escort mecidiyekoy escort
        pendik escort
        sex vidio
        altyazili porno
        antalya escort
        beylikduzu eskort bayan eskort bayan escort antalya sirinevler bayan escort
        gaziantep escort
        atasehir escort
        antalya escort bayan escort atakoy
        izmit escort
        ankara escort
        Sex ?zle
        Working...
        X