[HAM] T522 transistors

[Hugh]

Hi Gunter, I'm not sure I'm the Hugh you had in mind, but I would 
guess your power supply filter caps are needing replacement. Are you 
familiar with the sound of 60 (or maybe 50 in your case) Hz hum, or 
is it something different? These caps are silver cans mounted on the 
main amp board above the pedals.

Hugh

At 03:37 AM 5/3/2007, you wrote:
>Hi Hugh,
>it seems that you know something about Hammond Organs.
>I have the following problem with my T522 (just got it last week 
>from an old lady):
>while playing there is always a heavy background noice, a rather low 
>hollowsounding noice.
>Could you give me some advice?
>
>Thanks a lot,
>Gunter
>Belgium