Navigation ☰

Lexicon PCM 70 reverb

Lexicon PCM 70 front view

This well known Lexicon reverb was introduced 1985. It was the first Lexicon reverb featuring MIDI.

Lexicon PCM 70 front view

There are soldering points for a second audio input (left of the mono input, labeled J4) and some additional RAM (U32, U33, U46, U47) seen on the board. I have no clue, if there was a different Lexicon model using these, or if this board was designed also to serve for a never released product of Lexicon.
This unit was just changed from working on 220 V to 240 V. It is just one cable that needs to soldered onto a different, well marked point. You may adjust the 5 V after doing so. It is well documented in the service manual you find online.