Re: Euphonix MA 703 (clocking) problem
This is most likely the crystal(s). We usually replace both when we're in there.
You should measure the +/- 18Vdc rails. They should be between 17.5-18Vdc. Attached is a picture. In this picture, the 3 test-points can be seen just under the serial number label, just to the right of the black heatsinks. They're labelled +18, GND, and -18.
The pictured board is a newer version with the regulators heatsinked, the older versions have the regulators lay flat, soldered to the board.
The crystals are custom-made by Cal Crystal Comclock. High-precision. We have some we could sell you.
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