5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHPCM2 amp CDC error - dead optics?
Leading reported evidence
Check connections and the fuse
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I pulled the frunk apart, took the head unit out and checked the connections and the fuse.
Leading evidence: 'Check connections and the fuse' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check connections and the fuse' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
buying an expensive used Bose amp to retain the average factory audio (unit may eventually fail again)
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion · Original poster
So I'm now wondering, do I replace the amp or do I replace the whole system?
Replace connections i noticed the small loop i bought
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion · Original poster
Whilst chopping and changing connections I noticed the small loop I bought to test the changer was broken.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
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1 acknowledgements have no verified action link; they do not establish a repair result.
After a week or so of problem solving and searching on various places on the net I'm struggling with what was an intermittent fault with my pcm2.
Some days it worked. Others it didn't. When it didn't I'd get the "sysyem error: amp, CDC, phone not available"
I assumed a loose connection or a damaged wire somewhere.
I pulled the frunk apart, took the head unit out and checked the connections and the fuse. All fine.
Checked the footwell fuses. stereo, sound package & telephone (unused) All fine.
The CDC makes a noise when you power the ignition on and the mag ejects so I'm guessing the changer fuse hasn't blown.
I left the radio unplugged for 2 hours. Plugged back in. No better
Checked the back of the radio and the optical light is shining out from that.
Took the optical cable out of the amp. Red light coming out of the cable
Took cable out of CDC. No light. Given it a wiggle both ends but no life.
I even bought an optical loop and tried that on the changer, with and without power. But I still get the same error on the radio.
So can I assume that there's a break in the cable going from the radio to the CDC? Id replace it but I'm guessing it's not an easy job and more hassle than it's worth. I don't really use the CDC and was hoping the loop would work but as the optical cable appears broken I suppose that idea is off the table.
I'm not really sure where to go from here. Have I missed something?
Any help appreciated
Question. Does anyone know if the cd changer will need coding out in order to remove it?
I've found where the optical cable enters the frunk and discovered a connector on the bulkhead. I've unplugged the loop which runs down to the changer and back to the amp and plugged a new optical cable directly into the amp hoping to bypass the changer and the broken loop.
Unfortunately I still get the error message on screen and no audio in the cabin.
Any ideas?
So further investigation. Made up my own replacement optical loop and tested that and couldn't get any audio still. Whilst chopping and changing connections I noticed the small loop I bought to test the changer was broken. So I made another myself and tested it on each of the components. I could get the signal to move around the frunk plugging in the changer but couldn't get the signal to return from the amplifier. Which leads me to a likely culprit. A dead amp. So I'm now wondering, do I replace the amp or do I replace the whole system?
Replacing the whole lot removes the original equipment (bad for resale and costly)
Or...
buying an expensive used Bose amp to retain the average factory audio (unit may eventually fail again)
What should I do?
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