Prophet 5 Rev 2.0-3.0 6508 RAM chip upgrade FRAM replacement module.
Removes the 8 old 6508 1 bit x 1k rams and backup battery and updates to a single chip 8 x 1k FRAM with 150+ years memory with no backup battery needed.
Prophet 5 Rev 3.0 is Plug and Play.
- Back up any presets.
- Remove 8 old 6508 ram ics.
- Fit FRAM replacement module.
- Try storing a preset then powering off and on and recall the preset.
- If all ok remove the backup battery and reload presets.
Prophet 5 Rev 2.0.
- Back up any presets.
- Remove 8 old 6508 ram ics.
- If the 2 x 14503 ics are socketed remove and fit the adaptors supplied and replace the 14503 ics. If 14503 ics are soldered in a simple track has to be cut and one link fitted.
- Fit FRAM replacement module.
- Try storing a preset then powering off and on and recall the preset.
- If all ok remove the backup battery and reload presets.