- I've started to see intermittent audio level drops in my old Model Ds
that have been shipped around constantly, like #12 from '94 and #23
from '97. It appears the audio i/o connectors on the circuit board
are loosening up. I've gone through mine and cleaned the connectors,
and it seems to have fixed it. Let's hope it lasts. Here are
1) Remove the top cover.
2) Loosen the upper right back panel screw several turns. (This
allows you to pull top edge of the back panel back far enough to get
the first couple of channel boards up.)
3) Unplug the ribbon cable from the back panel to the channel board.
4) Pull up the back end of the first channel board. It isn't
necessary to disconnect the front panel cables.
5) Unplug the two brown 3-pin Molex connectors (see picture).
6) Wrap a rag around the connectors and give them a shot of Caig DeOxIt D5.
7) Reconnect the two cables. Be sure the cable from the lower XLR is
on the lower three pins, and the cable from the upper XLR is on the
upper three pins.
8) Re-seat the board.
9) Reconnect the back panel ribbon cable.
10) Repeat for all channels and the master board.
11) Test all channels and replace the top cover.
> I've started to see intermittent audio level drops in my old Model DsI cleaned the connectors of one of Rock City's very old Model Ds--No. 3, back
> that have been shipped around constantly, like #12 from '94 and #23
> from '97. It appears the audio i/o connectors on the circuit board
> are loosening up. I've gone through mine and cleaned the connectors,
> and it seems to have fixed it. Let's hope it lasts.
in October, and it came back again in February with the same problems.
Obviously the old connectors are failing and should be replaced.
I'm in communication with Molex about this, and I will be offering 1) a parts kit
for upgrading the connectors yourself, and 2) a fixed-price factory upgrade/