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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc. |
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16th Jun 2005, 9:21 pm | #1 |
Retired Dormant Member
Join Date: Apr 2005
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 90
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Philips D6920 Portable Cassette . Help Please
Has anyone got any Circuit / Service diagrams ... or have any knowledge of this machine.
I have not yet seen the machine , but I have been asked by an old impoverished friend from many decades back to have a look at it. He informs me that the unit will play a cassette for a while and then will go into pause mode [ with pause indicator on ] and thereafter will not move or return to play mode. I have been able to find pictures of the machine which suggest [ in combination with his description,] that it has logic control rather than mechanical piano key types ... It would be handy to know what kind of door and cassette sensors this has too. Any advice or information appreciated. Regards Gavin |
16th Jun 2005, 9:25 pm | #2 | |
Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,820
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Re: Philips D6920 Portable Cassette . Help Please
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27th Jun 2005, 8:45 pm | #3 | |
Retired Dormant Member
Join Date: Apr 2005
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 90
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Re: Philips D6920 Portable Cassette . Help Please
Quote:
As it turned out, in a sense I was lucky with this one. .. but I got a repeat of the old lesson that one should take nothing for granted. I finally got to see it . Quite a nice unit, sophisticated for it's time. Full microprocessor control ...Multiple motor. Portable or mains. I had been told that it had a fresh set of batteries inside. I had opened it up and was doing a general scan inside .. Everything looked clean and tidy ... All sub-boards were hard wired, so plug and socket dry joints which are a common problem were not going to be the issue here. I had a casette in to test and was playing it. I noticed that the fault occurred whenever there was a loud passage in the music... i.e. when there was high current demand. I checked the battery supply voltage : 66% of rated voltage ... Dodgy cell? - NO ... All the individual cells were low. I found a lead and plugged it into the mains ... Result: Perfect performance. Nothing wrong with the machine at all - Just necessary to replace the batteries every now and then ! Doh! Gavin |
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