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jurb6006@gmail.com: Jun 17 12:11AM -0700 >" I have two such machines that refuse to read a couple of my CDs, or, if they have tracks extending all the way out to the edge, the player won't play the final 2-3 tracks."   Have you tried increasing the focus tracking gain ?   Or can you even do that on that unit ?

Phil Allison <pallison49@gmail.com>: Jun 17 12:20AM -0700 thekma...@gmail.com wrote:   --------------------------   > 3/4 of the way up, vs. full output through > the fixed outs, and just turned my > receiver volume up a bit higher.   ** The max output level of CD players was specified (by the famous Red Book) as 2Vrms to make sure the possible signal to noise ratio was not compromised by noise. This was 10dB to 20dB higher that most other signal sources, like tuners and cassette decks.   Amps and receivers made since 1983 normally have special CD inputs that accommodate the higher level but earlier stuff often does not fare too well - possibly suffering overload at the input and/or making the normal volume control settings very low.       ..... Phil

thekmanrocks@gmail.com: Jun 17 02:33AM -0700 jurb.. wrote: ">" I have two such machines that refuse to read a couple of my CDs, or, if they have tracks extending all the way out to the edge, the player won't play the final 2-3 tracks."   Have you tried increasing the focus tracking gain ?   Or can you even do that on that unit ? "   I wouldn't even know what to touch inside unless I had schematics.

thekmanrocks@gmail.com: Jun 17 02:42AM -0700 Phil Allison: RE: "Maximum output of CD players"   ______ That should be just the peaks, not what it is outputting at all times. Still, because of how a lot of CDs are mastered, now and even back then, it's hard to get a *reasonable* listening volume without keeping the volume low. A lot of early(pre-1990) transfers to CD used manual gain riding, because I noticed the softer portions of the same songs on vinyl still had the same dynamics, but were just louder than I remembered them being.   In lieu of those older carousels that have trouble reading entire long CDs, I just use a slightly newer(2000) Sony changer with a pair of these:   https://www.parts-express.com/Data/Default/Images/Catalog/Original/266-244_HR_0.jpg

Phil Allison <pallison49@gmail.com>: Jun 17 02:58AM -0700 thekma...@gmail.com wrote:   -------------------------       > ______ > That should be just the peaks, not > what it is outputting at all times. <     ** Irrelevant to the comparison.   The MAX output of typical 1970s/80s tuners and cassette decks 250mV rms.   The input sensitivity to rated power of most stereo amps and receivers is the same.   ..... Phil

jurb6006@gmail.com: Jun 17 12:18AM -0700 >"OK - this horse is dead, flayed, flensed, tanned, rendered, dried, peppered, salted and jerked. "   And it seems to have fixed itself. Connection is solid as a rock now.   That leads me to believe that it was interference and whether it was the other or me, something adapted. After all if it interfered with me I probably interfered with it.

Ralph Barone <ralph@invalid.com>: Jun 17 12:04AM >> 66 uF, 276 kV, 3000 A >> but that was an aggregation of multiple cans.   > Did the series caps have voltage-equalizing mediation?   This was an AC application (partially cancel the series inductance of a 500 kV power line), so voltage equalization wasn't a huge concern. The individual cans did have bleed resistors inside, but those were to meet the requirement that a can would have a safe voltage on it 15 minutes after deenergization. The cans were also arranged in an H configuration with a CT to measure the unbalance current between the four sections. If the unbalance exceeded a critical value, the bank would be tripped out.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 09:48PM +0100 "Cursitor Doom" <curd@notformail.com> wrote in message news:ohpjo9$ckb$2@dont-email.me...   >> NT   > Haha! I think even those old germanium diodes would easily cope with a > four foot fall!   diodes would be OK but die mounting and bond wires in some germanium transistors was well, err - a bit amateurish.   Nowadays; suppliers pack *ANY* components in anti-static bags - it used to be some sort of clue which bits to handle with care.   There's some unexpected parts on the vulnerable list, so maybe they have a point.   molded semiconductors can be subjected to pretty much anything that doesn't break the case.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 09:52PM +0100 <tabbypurr@gmail.com> wrote in message news:253e500a-c0b0-43d3-8ffd-c8de9add639f@googlegroups.com... >> four foot fall!   > I think those would be some of the more fragile items. Many have an > extremely thin filament stretching a few mm with no support at all.   The first successful anti aircraft shell proximity fuze that could be fired out of a gun had 3 hearing aid style tubes.   The thyratron obviously isn't a hearing aid tube - its about the sixe & shape of the glass envelope.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 09:56PM +0100 "whit3rd" <whit3rd@gmail.com> wrote in message news:1b44ec1e-c2cc-432c-946c-e7be3b97c839@googlegroups.com...   > Oh, no; a point contact diode can easily jar out of spec. There was even > an old device (the 'coherer') which reformed a rectifying contact by > motorized shaking during normal operation.   AFAIK: the point is "burned in" during manufacture. The weld is pretty much the alloying process that creates the PN junction.   They're much less fragile than the old catswhisker/galena crystal.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 09:58PM +0100 <oldschool@tubes.com> wrote in message news:qha1kcpqi8052hbeug8v41fn4ki2lnqlk3@4ax.com...   >>Haha! I think even those old germanium diodes would easily cope with a >>four foot fall!   > Dont try that with a vaccuum tube!   I've seen one or two bounce - not very often though.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 10:03PM +0100 "mike" <ham789@netzero.net> wrote in message news:ohq53p$cd1$1@dont-email.me... >>> compressed air (either indoors or outdoors).   >> **Of course. And MUCH safer for the equipment.   > How do you get the cat hair out of the CPU heat sink underneath the fan?   Its very easy when you don't have a cat - but since you do, odour killing cat litter is great for packing in gear that came from a heavy smoker household.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 10:07PM +0100 "Trevor Wilson" <trevor@SPAMBLOCKrageaudio.com.au> wrote in message news:eqbtpdF8peuU1@mid.individual.net...   >>> **Of course. And MUCH safer for the equipment.   >> How do you get the cat hair out of the CPU heat sink underneath the fan?   > **I vacuum it out, possibly with the aid of a brush.   Since de fluxing solvents were banned to protect the ozone layer, most electronics is cleaned with water - sometimes its an option, sometimes it isn't.   Dish wash detergent works great, but they thicken it with salt - so make sure you rinse it all out.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 10:12PM +0100 <oldschool@tubes.com> wrote in message news:kb91kcpo10v816r7c1h51h8n3p9p3l7v2q@4ax.com...   >>A vacuum, particularly one with a HEPA filter, would be safer than >>compressed air (either indoors or outdoors).   > I have not had rodents in my equipment,   A few years back I Freegled an old RF signal generator with a dead spider wedged behind the frequency dial.   I'd done repairs and cleaning, it had a bodged voltage regulator and I never got the AF modulator going - I just couldn't be bothered taking out the whole chassis to get at the spider.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 10:17PM +0100 "Dave Platt" <dplatt@coop.radagast.org> wrote in message news:9a961e-hsl.ln1@coop.radagast.org... > Jon Elson <jmelson@wustl.edu> wrote:   >>I have seen a fat spark produced when firing off a CO2 fire extinguisher, >>which seemed like a pretty big design defect.   The one I fished out of a skip is now fitted with a tyre adaptor and used for blowing tubeless tyre onto the rim.   You have to hold it upside down - if the syphon tube puts liquid CO2 into the tyre, the rim starts creaking ominously.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Jun 16 10:19PM +0100 "Stephen Wolstenholme" <steve@easynn.com> wrote in message news:25v1kc1vcie0ncakqj8garf1u86lon9qst@4ax.com...   > I worked in a factory once that did a lot of cleaning of electronic > modules. Air was supplied by a central compressor. I never had a > problem with static   At tea break a bunch of us sat on the compressor - somehow I always ended up next to the intake filter, and I tend to fart.

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