Home Forums GuitarPCB Build Support muff foxy lady (solved)

Viewing 15 posts - 1 through 15 (of 31 total)
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  • #3146
    brako
    Participant

    hi evrybody,

    today i’m making the foxy lady, but the first test is not concluant.

    i’ve voltage in the pcb, but not on all composents or resistors. the bypass led dont work. the two diode don’t work too.

    i’ve sound in bypass mode. nothing with the effect.

    i’ve check evrything i could but i don’t see the problem..

    so how i can check more? step by step? or if you see something wrong, tell me please.

    thank u to the community

    braKo

     

    #3153
    wilkie1
    Moderator

    Since you are using a battery, you need to plug a 1/4″ plug into the IN jack to activate the power.  You said you have power to the board.  The power must reach both boards.  Confirm that you have power to all transistors.  Provide voltage measurement for all legs of the transistors and the supply voltage.

    If you do not have voltage to all transistors, carefully reflow all solder joints.  Since you did not use SOCKETS on the transistors, you may have damaged one or more of them.

    SIgnal must pass through jumpers.  For all features to function, you need to install jumper wires on J1, J2, J3 and J4.  I can’t see all of these on the photo.  Confirm.

    The status LED is not working because you have it installed on the main board.  To use the LED on the main board, you must wire S4, S5 and S6 to the foot switch.  A 3PDT board is not used. When a 3PDT board is used, the LED is installed on that board and S4, S5 and S6 are not used.

    I cannot see if the blue wire from the 3PDT board BO pad is connected to the IN pad with a “T” on the main board.  I think it is there.

    Make these corrections and report back.

    #3155
    brako
    Participant

    hi,

    yes i tried with a 1/4 plug of course, and with a transfo 9v.

    all 4 jumper are jumping.

    so i’ve to check all transitors and reconnect the led to the 3pdt board (have i to put one resistance on this board???)

    for this i don’t understand sorry : “I cannot see if the blue wire from the 3PDT board BO pad is connected to the IN pad with a “T” on the main board. I think it is there.”

    and an other question, can i use a b250k pot for the mid scoop? with a resistance maybe?

    thank u

    #3157
    wilkie1
    Moderator

    Yes, the LED needs a CLR (resistor) on the 3PDT board.

    Confirm the connection from the 3PDT board pad marked BO to the main board IN pad marked with a “T”.

    The Mid scoop uses a 250K pot.  If you can add a resistor of about 28K between lugs 1 and 3 of the pot, that will make about a 25K pot.

    #3165
    Barry
    Keymaster

    We can’t see the other side of the board to make sure you connected to the correct pad.

    The Green Wire [Out] looks OK but we cannot see the Blue Wire [IN] in the photo.

    Other helpful Beginner Guides you should read – Click Here

    #3171
    brako
    Participant

    ok,

    i’havnt check voltage in transistor yet, but :

    i have resoldier de led on the 3pdt board with a 2,2k resistance, it’s working

    “Confirm the connection from the 3PDT board pad marked BO to the main board IN pad marked with a “T””. so i have resoldier the wire BI of the 3pdt to the “T” in on the board like in the manuel and no from the BO… is it ok?

    so now it’s working but i’ve a great loss in the disto… so i have to recheck all value of all composents…

    and after i will modif it with the mid scoop and maybe transfer the layout 😉

    thanks

    #3203
    brako
    Participant

    hi,

    ok, i’ve check my board but i don’t know from where the problem is coming..

    the problem is that i’v a great loss in the outuput volume..

    any suggestion please?

    thanks

    #3207
    wilkie1
    Moderator

    Since you have made several wiring changes, I think we should take new photos to help us see what has changed.

    Now that you have signal passing, confirm that you have signal on both bypass and effect settings.

    Provide voltages on all transistors, all three leads and your battery voltage.  Use the recommended format of Q1, C,B,E, etc.

    Helpful Voltage Guides (Page 8) – Click Here

    #6490
    brako
    Participant

    hello, i’m back to finish to resolve the problem that i have on my foxy lady.

    so :

    have i a problem on the Q4???

    my problem is the same : sound’s effect seems to be very very far away!

    thank you for you helping

     

    #6491
    wilkie1
    Moderator

    The emitter voltages on Q1, Q2 and Q3 all seem to be low.  Q4 voltages are also wrong.  I would expect to see Q4 C-0.0, B- 0.7, E- 8.0 or close to these values.

    FIrst, report your battery voltage.  Then provide new measurements of all four transistors.  Then remove Q4.  Report new measurements of all four transistors including the empty Q4 values.

    #6494
    brako
    Participant

    hi,battery voltage is 8,9/9V. with Q4 all values are the same. without Q4, the same same…

    #6497
    wilkie1
    Moderator

    In the above photo, Q4 appears to be installed incorrectly.  It should be installed as shown on the board silkscreen.  Check this and provide new measurements of Q4 installed and also the voltages at the Q4 socket without the transistor installed.

    #6500
    brako
    Participant

    Q4      7 / 7,8 / 7

    without  8,8 / 8,8 / 0

    problem!

    #6501
    brako
    Participant

    i want to make the modif for the mid scoop.

    is it this one to replace c10?

    thank u

    #6502
    brako
    Participant

    when i touch behind the pcb and create contact with my finger, near q3 and volume, volume come up! bizarre?

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