20
Fender
Champion “600”
•
Mercury Upgrade Kit
This project and its documentation is the result of technical investigations made by the engineering staff of
Mercury Magnetics
. The disclosure of the information herein may pertain to proprietary rights and
the furnishing of these documents does not constitute an expresed or implied license to use such materials.
IMPORTANT NOTE
Fender reports that with the first batch of Champion “600” amps there was a minor shielding problem. Paint was
inadvertently left on the chassis mounting tabs (the tabs on the far left and right of the chassis – see photo). This
paint interferes with the ground and will cause amp noise if not corrected. It’s an easy fix.
To determine if you have this problem, look at the end tabs of the chassis mounting holes. If there is paint on these
tabs you must sand it off. Sand to remove all paint from the outer side of the tab. The inner side is not necessary.
The idea is that when the chassis is inserted into the cabinet that it grounds against the metal foil in the chassis
rack area. Likewise, if this metal foil is ripped or torn, you should patch it up with new foil. Heavy-duty aluminum foil
will do the trick.
This problem was caught quite early in production. So, not all Champion’s will require this correction.
If the two end tabs on the chassis have paint on them,
you’ll have a grounding problem.
To fix it just sand off the paint, down to themetal on the
outer side of both tabs.
The foil provides grounding
and ground-shielding for the
chassis. If the ground is bad,
the amp will make excessive
noise. If the foil is torn-away
onthe chassis rack area of the
case, you’ll need to repair it.
Heavy-duty tin foil from your
local grocery store can be
used to remedy the problem.
Содержание Champ 600
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