Home Forums Help/Technical Questions English Muff’N Overheat.. Please help!

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  • #81050
    splinterize
    Member

    Hi, hope somebody can help me with my problem here. Today when i switched on my English Muff’n, suddenly the volume drops. I can barely hear anything except when I maxed out the volume and gain, then only I can hear the guitar. I can confirm that the problem comes from the Muff’n as the volume drops only when I turn on the Muff’n. I also noticed that the pedal power supply become extremelly hot.

    What should i do?

    EDIT : I am quite sure that the problem is caused by overheating. The pedal actually works for about 5 minutes then it get really hot and stop working for a while. The internal power supply (that little black box, dont know the exact name) seems to be the part that really get hot.

    Does anybody have an idea?

    EDIT2 : I just had a tough. It might be the supplied external power supply’s fault. I will stick a multimeter to it and see if it give the correct voltage (wich should be 12V, right?)

    Any toughs?

    #112908
    KartoonHead
    Member

    Annoying that you don’t get any real support from EHX on here isn’t it?

    I had a similar experience with a solid state distortion pedal, worked for a bit, then the drive and volume went a bit erratic, then everything got very warm. I can only put it down to an internal component failure (as I’m still using that same power supply to power my whole pedal board), most likely something on the power rail failing and sucking too much current, maybe flushing it to ground, that usually gets things really got.

    Sorry I couldn’t be of any more assistance, but I’m not really qualified in this area :p

    #112910
    electro-melx
    Moderator

    I don’t really know what to suggest but be careful poking around with the internal transformer (the little black box), it can store quite a lot of voltage.

    yeah, it runs on 12v AC (not dc, like most pedals) … I presume you are using the correct supplied power supply.

    #112921
    asalinasc
    Participant

    Overheating it’s a clear sign of an internat short circuit
    Something is drawing more current than usual.

    Yes the power supply for tube pedals is 12Volts AC because it gets converted into 220V (in most cases)
    internally by an step up transformer.

    Check your fubes there might be one with an internal shot. i don’t know the english muff design but the only source what could be drawing current a lot are the tubes. if there was IC’s inside they just overheat and do weird noises (if they do) but they don’t draw so much current except if there is any regulator inside.

    Hope that helps.

    #117631
    Nerm
    Member

    Hi I’m getting the same problem with my Muff’n, starts cutting out after about 5 mins! Did you solve the problem?

    #117679
    Zeke_VzS
    Member

    Hi,

    I’ve just had the same problem and it was the tubes.

    Also I think anyone considering/having to switch out the tubes should consider a 12AY7 on the left and a 5751 Gold on the right…. It’s actually made me glad mine died. Its a massive improvement and I dont understand why EHX don’t sell them with this tube configuration as standard.

    The bigest difference it makes is it being balanced accross the EQ; if you set all the pots to 12 o’clock it fits, it doesnt sound like you’ve got the treble up around 3 o’clock. The 5751 also makes it richer accross the whole of the tone, like it has more substance and depth throughout making all of it richer and more defined. I can’t emphasise how much nicer this it makes playing through this pedal, not that it wasnt great as it was.

    It does increase the gain available significantly, but it just means havng the tone knob dialed back a little more to work it like a pre-amp, it’s just the difference between fiddling about around 10 and 11 o’clock and fiddling about around 7 and 8 o’clock instead…. and the ammount of extra dirt available opens up a new spectrum of possibilities.

    Nothing else about the way the pedal behaves in relation to the controls seems to have changed either, only the gain and the treble pots, while still making it all sound more awesome :D

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