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Replaced Head Unit

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Original source

9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHReplaced Head Unit

Reported or suspected cause

amp and or fibre optics

Reported cause

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

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 report identifying a cause: 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.

Reported cause · Original poster
I have a feeling the issue is the amp and or fibre optics.
Original post Read captured discussion
Replaced Head Unit

Frequently discussed work

Install works everything

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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.

Performed · outcome unconfirmed · Original poster
Ordered new amp and installed works everything !
Original post Read captured discussion
Replaced Head Unit

Read full discussion summary

Leading evidence: 'amp and or fibre optics' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'amp and or fibre optics' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Install works everything' (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.

Read captured replies

1 matching discussions · 9 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Install works everything

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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.

Performed · outcome unconfirmed · Original poster
Ordered new amp and installed works everything !
Original post Read captured discussion
Replaced Head Unit

Replace amp as well or is there a way

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 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.

Suggestion · Original poster
Should I replace amp as well or is there a way to fix fibre optics wires?
Original post Read captured discussion
Replaced Head Unit

Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Install works everything

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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.

Performed · outcome unconfirmed · Original poster
Ordered new amp and installed works everything !
Original post Read captured discussion
Replaced Head Unit

Replace amp as well or is there a way

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 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.

Suggestion · Original poster
Should I replace amp as well or is there a way to fix fibre optics wires?
Original post Read captured discussion
Replaced Head Unit

Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

amp and or fibre optics

No successful repair reported for this finding.

1
Identified cause: 0
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that report identifying a cause: 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.

Reported cause · Original poster
I have a feeling the issue is the amp and or fibre optics.
Original post Read captured discussion
Replaced Head Unit

Coverage and how to read this overview

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.

9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T052503Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi all, Porsche [phone removed] coupe 3.8l manual. I replaced the head unit as previous unit intermittent 8 times out of 10 radio no sound. 2 out of 10 works great. I have a feeling the issue is the amp and or fibre optics. Should I replace amp as well or is there a way to fix fibre optics wires? Thanks, Scott

POST 2Original post

Any way to swap in a known good amp to see if that's the problem? Do a search for CDR23 in the forum; you'll have lots of reading material.

POST 3Original post

Quotes source post: 16969036

I've dealt with MOST based units, and since the 2003 model was the first run that Porsche implemented there were quite a few problems. It's hard to know or pinpoint based on what you're saying... just a finger in the wind guess. But if I had to give a blind guess, I'd lean towards the amp over the head unit.

POST 4Original post

Not just the amp, it could be anything on the fiber ring. CD changer or phone if installed.

POST 5Original post

In my case, with similar symptoms, it was a bad amp.

POST 6Original post

Maybe its that 3.8L motor. I dont think I would ever turn the radio on if I had one.

POST 7Original post

Quotes source post: 16971028

Just caught that. Wonder if it's a typo? lol

POST 8 / ORIGINAL POSTEROriginal post

Hi all, Thanks ordered a new amp and yes my apologies for the 3.8L lol! Thanks, Scott

POST 9 / ORIGINAL POSTEROriginal post

Ordered new amp and installed works everything ! Thanks everyone, i love rennlist!!!

This is a source reference. Confirm exact model applicability in the original material.