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  #1  
Old 18th January 2017, 07:48 PM
bob orbell bob orbell is offline
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Default Musical Fidelity CD player

Hi all, I have had the above from new, and now the optical output is non operational, there is no light at all from the transmitter, the transmitter is a plastic housing with legs soldered to the PCB, is it worth getting a new one?, or would the problem be more dramatic. Thanks. BOB
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  #2  
Old 19th January 2017, 02:49 PM
John Caswell John Caswell is offline
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Default Re: Musical Fidelity CD player

Hi Bob,
Are you getting the coax output? Check that you are getting +5V on at least one of the optical block pins and that one of them is at earth potential, as normally the coax and optical outputs are wired in parallel.

John
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  #3  
Old 19th January 2017, 04:54 PM
bob orbell bob orbell is offline
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Default Re: Musical Fidelity CD player

Thanks John, I am getting coax output, will need to disassemble compleatly and check the 5 volts and ground, I will report back.
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  #4  
Old 20th January 2017, 11:31 AM
bob orbell bob orbell is offline
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Default Re: Musical Fidelity CD player

Hi John, I have got the results of your asking, pin 1 earth and 0 ohms to all other ground points, pin 2, +5 volts DC, pin 3, +5 volts DC, pin 4, 2.5 volts DC, the plastic housing is a little wobbly, but the solder connections to the PCB are good. BOB
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  #5  
Old 20th January 2017, 09:11 PM
bob orbell bob orbell is offline
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Default Re: Musical Fidelity CD player

An update on the optical transmitter, after all appeared to be correct with John's test's, I desoldered the pins to remove the transmitter and one of the pins came out with the solder sucker, clearly this must be the problem, a new part has been sourced from Musical Fidelity and should be here soon, I will report later. BOB
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  #6  
Old 20th January 2017, 11:12 PM
John Caswell John Caswell is offline
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Default Re: Musical Fidelity CD player

Hi Bob,
Sounds like that's sorted.

John
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  #7  
Old 21st January 2017, 11:35 AM
bob orbell bob orbell is offline
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Default Re: Musical Fidelity CD player

Part arrived this morning, FOC, excellent service from MF, fitted and all working, many thank's to John. BOB
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