tubes are dying...

capoeiraespcapoeiraesp
Updated
    capoeiraesp
    Hey all, So I've begun to notice that when I fire up my 5150mk2 (after a min or so on standby) that I get a whistly noise that changes pitch and a bit of crackling and eventually just stops after another minute or so. The current tubes (sovteks and electro hamronix) were put in around 2 years ago and ive mainly played it at bedroom settings in that time, only puttin the vol. above 1 or 2 on a dozen occassions or so. Am I right in thinking it's time to do a retubing?
    Dislike (0)
    archives
      Share
    Armitage
    Armitage wrote

    A microphonic tube is the usual problem. Try taping each of the tubes (it's probably a preamp tube) with the lead end of a pencil and see if you hear a loud (it's obvious) ring noise. You'll likely just have to replace one tube. If it's a preamp tueb, you can try changing it's location... the one that makes the least difference with noise is the one closest to the power transformer, the furthest from where you plug your guitar in.

    Reply
    Dislike (0)
      capoeiraesp
      capoeiraesp wrote

      Cheers man, very useful info, I'll go have a crack at soon

      Dislike (0)
        Post to Thread

        Cancel