Home › Forums › Vintage EHX › Pulse Modulator : help needed :-)

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  • November 1, 2013 at 4:13 pm #83212
    rafmax
    Member

    Hello, just received a Pulse Modulator from the ealy 70’s which looks in great shape, works… as intended ? I don’t know, I have never heard or seen one video of it:bug:
    The reason I wonder if it is in perfect working order ? I found a “free” capacitor inside… I also found that a transistor (2N5133) and a similar capacitor were soldered on the trace side.
    PulseModfreecap1_zps14b8f7e0.jpg
    PulseModfreecap2_zps8f9c4cb8.jpg

    I would really appreciate that a happy Pulse Modulator owner takes pictures of his units guts… Or just help me because he knows how much capacitors like this one should be there, on the board :coolsmile:
    Here are extra pictures showing both sides of the board. I traced blue lines to should where It looks modified, repaired or whatever.
    PulseModulator1_zpsbfba40bf.jpg
    PulseModulator2_zps48f022d7.jpg
    PulseModulator3_zpsc41b35e5.jpg

    Otherwise, the pedal seems to work fine :
    – Boost is ok on the boost output
    – Some kind of a weird sequenced tremolo. The third volume from the left, seems to act like a master volume for this tremolo…

    Looking forward to hear from you all:gulp:
    Raphael

    November 1, 2013 at 5:06 pm #119461
    The EH Man
    Moderator

    It’s very common for EH stuff to have parts mounted on the bottom of the board. If I can get to my Pulse Modulator (in storage) I’ll see if I can get some pics of it.

    November 1, 2013 at 5:17 pm #119462
    rafmax
    Member

    Hello,

    thanks for this fast answer and yes, lots of components found on both sides of EHX pedals I have :-)
    I’ll keep that Pulse Modulator “open” until you post some pictures… No rush !
    Raphael.

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