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  • #24868
    Anonymous
    Inactive

    I’m trying to build a creamy dreamer version of the MUFF’N with no success. I’ve done the clipping mod and the mid scoop control mod. With an audio probe I have sound all the way to Q4 then nothing. I have power at r22,r25 and to one leg of c13. I’ve reflowed all the joints in these areas and replaced the capacitor at c13. This is a combo build with an emerald ring, I have sound in bypass and the emerald ring also works. I’m reaching out so I don’t have a MUFF’N build of shame. My Q readings are as follows.
    Q1 C 6.24 B .53 E 0
    Q2 C 8.17 B 1.23 E 0
    Q3 C 4.21 B .56 E 0
    Q4 C 9.03 B .04 E 0
    This was done with the transistors installed and they are 2n5088, also I had 9v at the one leg of c13. Any insight would be greatly appreciated.

    #24888
    Barry
    Keymaster

    I would start by doing things like re-flowing all the pads. Then after that try again. It is a bit of a Sherlock mystery sometimes. I would also make sure you have very firm transistor connections. If they are kind of flopping around in there it can cause a problem like this.

    You can bend the leads back and forth a few times at opposite angles to get more traction on the transistor.

    Verify the pinout of the transistor you are using as well.

     

    #24889
    Billy
    Moderator

    Apart from Q3 your transistor collector voltages look high

    What are the voltages on the empty sockets

    I can’t see any incorrect values all look good

    The only resistor I’m not 100% on is R11 can’t quite make out the multiplier band

     

    #24902
    Anonymous
    Inactive

    This is James again. So I’ve spent a few hours on this MUFF’N this afternoon following the recommendation from Barry and double checking r11 as Billy mentioned. R11 is a 22k and my joints couldn’t be any more shiny, I  adjusted my transistor legs and made sure everything was tight. Still nothing, so after a cold PBR I decided to change c13 from a box to a ceramic capacitor and noticed on the component side no solder  came through the board on the leg  that isn’t getting power. I redid it and still nothing. Should I solder that leg on the component side as well? My Q readings have changed a  little bit, they are

    open socket

    Q1 C 9.08 B 8.67 E 0

    Q2 C 8.74 B 1.24 E 0

    Q3 C 7.67 B 1.08 E 0

    Q4 C 9.10 B .04 E 0

    With transistors

    Q1 C 9.04 B 8.64 E 0

    Q2 C 4.22 B .55 E 0

    Q3 C 4.17 B .55 E 0

    Q4 C 9.06 B .04 E 0

    My win streak has  ended in a fiery crash with this one. Barry can you go  back to sending me the boards that work on the first try?

    #26562
    Anonymous
    Guest

    Did you ever get this issue resolved? I just built two Creamy Dreamers with almost the exact same issue. I get sound through my probe up to C12…then nothing.

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