Audio Fix / setup help
Marantz Cinema 70s: restore an intentionally hidden input to selection
Marantz Cinema 70s: restore an intentionally hidden input to selection. Check prerequisites and the actual response before reporting an outcome.
Manufacturer-documented Reviewed 2026-11-09 · Revision 1
Follow these checks in Audio Fix →When this guide applies
A known physical source/input is absent from normal source selection.
Connection scope: Device controls / power only. Symptom: An option or codec is missing.
This is a documented check, not a diagnosis of your equipment. The model name does not confirm the selected input, mode, software or connected partner.
If your exact model or a required setting is unknown, use the “I don’t know” branch below. Do not apply a similarly named model’s instructions.
Checks and possible outcomes
Start at step-0. Follow the link that matches what you actually observe. Alternative branches are not a single sequence of actions.
step-0
Is the missing source a real supported input on this model?
A connector or service absent from the hardware cannot be created with Hide Sources.
Look for: Confirm the actual prerequisite or observation. Unknown stops safely.
- If Yes / check completed → Inspect Inputs > Hide Sources for that exact source
- If No / cannot confirm → Keep these observations for official support
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Hide Sources CINEMA 70s ↗Hide Sources — Inputs > Hide Sources sets Show to use a source and Hide to omit it from the displayed selection.Exact model named in the retrieved manufacturer document header. · Source checked 2026-11-09
step-1
Inspect Inputs > Hide Sources for that exact source
Keep its current Show/Hide setting; do not reset assignments.
Look for: Perform only the stated operation, then confirm whether it could be completed.
- If Yes / check completed → Is it hidden, and do you want it available again?
- If No / cannot confirm → Keep these observations for official support
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Hide Sources CINEMA 70s ↗Hide Sources — Inputs > Hide Sources sets Show to use a source and Hide to omit it from the displayed selection.Exact model named in the retrieved manufacturer document header. · Source checked 2026-11-09
step-2
Is it hidden, and do you want it available again?
An intentionally hidden source may be left hidden. This changes visibility rather than audio wiring.
Look for: Confirm the actual prerequisite or observation. Unknown stops safely.
- If Yes / check completed → Set only that source to Show
- If No / cannot confirm → Keep these observations for official support
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Hide Sources CINEMA 70s ↗Hide Sources — Inputs > Hide Sources sets Show to use a source and Hide to omit it from the displayed selection.Exact model named in the retrieved manufacturer document header. · Source checked 2026-11-09
step-3
Set only that source to Show
Confirm it appears in ordinary source selection; do not change other inputs.
Look for: Perform only the stated operation, then confirm whether it could be completed.
- If Yes / check completed → Checks completed — report what happened
- If No / cannot confirm → Keep these observations for official support
- If I do not know / cannot check → A required fact is unknown
- Manufacturer-documented Hide Sources CINEMA 70s ↗Hide Sources — Inputs > Hide Sources sets Show to use a source and Hide to omit it from the displayed selection.Exact model named in the retrieved manufacturer document header. · Source checked 2026-11-09
Possible result
Checks completed — report what happened
Completion is not an automatic solved result. Report solved, partly helped, did not help or could not follow based on your actual observation. No Audio Review physical test is claimed.
steps completed
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.
Possible result
Keep these observations for official support
A required prerequisite or response was not confirmed. Stop this sequence and use the exact model and partner documentation. Do not escalate to a factory reset, firmware installation, internal repair or unsafe wiring change.
next support
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.
Possible result
A required fact is unknown
Confirm the exact model, connection, partner capability and current control state before continuing. Do not guess settings or operate an updating product.
insufficient data
Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.