Re: L100 Percussion circuit trouble

[Paul Deveau <pdeveau@uottawa.ca>]

Perhaps a rogue piece of metal was left behind after Mr. Emerson withdrew
his dagger.  Ooops!

PaulD

On Wed, 2 Oct 1996, Magnus Enorson wrote:

>         Greetings fellow Hammondites
>
> Yesterday I went to take a look at a friend's L100 which was having some
> trouble with the percussion circuit.
>
> When I got there, the top manual was making thunder noises only (no sound),
> unless percussion was switched on, which caused a VERY loud perc tone, with
> a great deal of thunder to accompany it.
>
> I followed the signal chain to make sure the problem was really located in
> the perc unit, and then took out and cleaned the connectors of the 12AX7
> tube in the circuit. This restored the signal to normal when percussion is
> switched OFF, but I still get loud thumps when operating any of the
> percussion switches, as well as the vibrato/chorus switch which is also
> connected to the perc circuit. Also the percussion only works with slow
> decay and normal volume, if I switch to fast decay and/or volume soft, the
> top manual goes dead again.
>
> all connectors and all the switches are OK (I checked.)
>
>         Thanks in advance, Magnus
>
>         Samuel (the owner) says thanks too