Maybe it depends on the bench supply. Some are just too badly made to trust and a fuse holder inline with the output cable surely can't be any harm.
I only have a DIY analog variable current and voltage supply made years ago with fuses and a bulb current limiter on the mains for safety. It's not flexible enough and not 'lab' grade!
Found a nearly new Tenma 72-10500 lab supply: dual 30V 3A for €130 nearby.
It's a linear supply weighing 4KG and gets ok reviews on eevlog forums.
Last year I purchased an old 20mhz Kenwood o'scope and a frequency generator, and now hugely value test equipment for practical use and educational gain.
I only have a DIY analog variable current and voltage supply made years ago with fuses and a bulb current limiter on the mains for safety. It's not flexible enough and not 'lab' grade!
Found a nearly new Tenma 72-10500 lab supply: dual 30V 3A for €130 nearby.
It's a linear supply weighing 4KG and gets ok reviews on eevlog forums.
Last year I purchased an old 20mhz Kenwood o'scope and a frequency generator, and now hugely value test equipment for practical use and educational gain.
Got a bench power supply. I hooked it up yesterday with to the Audiolab cdp digital supply.
It cut out twice but my connecters were at fault. Fixed now, it is playin a disc on repeat at the moment.
However, after power-up, TOC is not read, which used to happen occasionally.
The spindle will spin a bit, then it spins ANTICLOCKWISE briefly.
It reads the TOC, and plays after reinserting the CD.
Fair to assume the spindle motor is ok, but the servo is failing?
It cut out twice but my connecters were at fault. Fixed now, it is playin a disc on repeat at the moment.
However, after power-up, TOC is not read, which used to happen occasionally.
The spindle will spin a bit, then it spins ANTICLOCKWISE briefly.
It reads the TOC, and plays after reinserting the CD.
Fair to assume the spindle motor is ok, but the servo is failing?
Just for posterity and closure(ish)... I installed another EI transformer I had lying around, with it's own fuse on the mains side.
It's been in use for a month or so. No meltdowns so far. No excess heat. Will use and enjoy for another while🙂
Using real store bought Cd's, the TOC always reads ok. And it's usually happy with the Memorex discs I use.
It's been in use for a month or so. No meltdowns so far. No excess heat. Will use and enjoy for another while🙂
Using real store bought Cd's, the TOC always reads ok. And it's usually happy with the Memorex discs I use.
The digital transformer in these decks is seriously under rated and eventually goes the way you describe. RS components if they are available where you live have a similar sized toroidal of a higher rating. Once replaced the deck goes on for ever.
Thanks very much for your comment. It gives me confidence in my findings.
Coming to this thread late. My MagnavoxCD player from early 1990s, which was boxed up, but recently put back into service, is now shown signs of failure: requires 30 minutes warm-up before it will read some discs and play them (all commercial Red BooK). My Sony ES DVD/CD player is also starting not be able to read discs (once every 50 discs).
Decided to begin searching for CD player replacements: cheap one for secondary use and somewhat expensive (up to $800) for primary use - replacing the Sony ES. What I dolled is that except for Arcam, no player under $1000 has "gapless playback" of tracks where the music is supposed to be continuous without breaks at the division between gtracdks. Gapless playback is needed on many concert CDs, as well as things like Dark Side of the Mood by Pink Floyd (that dates me). Inquiries to Emotive, Yamaha and Mrantz confirmed that the players I had been looking att - all under $1000 - do not support gapless playback. I was told that the Mrantz network/CD player at $1500 will play with gapless playback.
Researching this more, it seems that the problem is the use by manufacturers of CD data drives which do not have the proper firmware/hardware to recognize gapless playback tracks. Data drives do not require, and in fact probably demand separation between tracks.
Arcam, however, makes $350 CD player, but not sure about quality.
I know everyone is moving to digital files and framing, but I refuse to go in that direction. Other than the time sink of ripping thousands of my CDs to digital form, there is the issue of getting the artwork etc. Streaming is distasteful given the low royalties played y streaming companies to the performing artists (and possibly the copyright holders for the music composition), not to mention that access can be instantly removed by the streaming company. As far as digital file downloads, I am not convinced they are also not subject to digital chicanery by which a software switch could be activated to prevent further use of a given file. And my wife's experience with Audible, in which Audible - once purchased by Amazon - "lost" records of her audiobook purchases and therefore will not restore the los files the no longer appear in her library, further sets me against the so-called bright digital future.
I guess I am hoping that CDs will come back into vogue, just as the LPs are doing so now (and that is ridiculous, in my view: I gave away 3500+ LPs and have never looked back!).
Decided to begin searching for CD player replacements: cheap one for secondary use and somewhat expensive (up to $800) for primary use - replacing the Sony ES. What I dolled is that except for Arcam, no player under $1000 has "gapless playback" of tracks where the music is supposed to be continuous without breaks at the division between gtracdks. Gapless playback is needed on many concert CDs, as well as things like Dark Side of the Mood by Pink Floyd (that dates me). Inquiries to Emotive, Yamaha and Mrantz confirmed that the players I had been looking att - all under $1000 - do not support gapless playback. I was told that the Mrantz network/CD player at $1500 will play with gapless playback.
Researching this more, it seems that the problem is the use by manufacturers of CD data drives which do not have the proper firmware/hardware to recognize gapless playback tracks. Data drives do not require, and in fact probably demand separation between tracks.
Arcam, however, makes $350 CD player, but not sure about quality.
I know everyone is moving to digital files and framing, but I refuse to go in that direction. Other than the time sink of ripping thousands of my CDs to digital form, there is the issue of getting the artwork etc. Streaming is distasteful given the low royalties played y streaming companies to the performing artists (and possibly the copyright holders for the music composition), not to mention that access can be instantly removed by the streaming company. As far as digital file downloads, I am not convinced they are also not subject to digital chicanery by which a software switch could be activated to prevent further use of a given file. And my wife's experience with Audible, in which Audible - once purchased by Amazon - "lost" records of her audiobook purchases and therefore will not restore the los files the no longer appear in her library, further sets me against the so-called bright digital future.
I guess I am hoping that CDs will come back into vogue, just as the LPs are doing so now (and that is ridiculous, in my view: I gave away 3500+ LPs and have never looked back!).
Wow, I concur with a lot of that.
Firstly: I got decent stylus finally last month. Looked more into record industry. Most stuff since the 80's printed onto records came from bad quality digital sources, bad mix's, intermediary sources etc. I'll try find the article.
It's all fun for me. But vinyl.. like my revox r2r, I won't spend more money on.
Secondly.. streaming: had Tidal for 2 years. Just canceled. I was 'backing up' CD quality 'master' and non master playing on a good digital system.
Long story short: look a Goldensound's blog entry and YT video about tidal MQA and how the standard lossless is converted from lossy sometimes.
Best digital tracks I have are WAVS, ripped from well recorded and engineered, original CDs.
Thirdly.. gapless:
I want what the original album artist intended. I have have an Arcam cd72 for gapless (and computer😉. )
They're cheap second hand .. The transformer in mine is a high quality EI made in UK, but it buzzes, so does the matrix display unless dampened.
I would like a CD92 with proper DAC, etc.
I have heard about the virtues of Magnavox players, Philips copied their 1st player, however.. 0 in Ireland.
I use digital out to a Denafrips Ares 2 on my CDPs now. They each sound different, DAC aside.
Cd72 DAC is actually very pleasant.
Highly modified Cambridge Azur 740c is best for me, but wouldn't recommend unless you like replacing many many capacitors on a sh**ty pcb.
At the same time, affordable modern CDPs have crap chips that don't do gapless. Get a second hand one that does, and get it fully sorted by a pro imo.
All the best🙂
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