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jurb6006@gmail.com: Jun 08 10:53PM -0700 Anyone know where to get a deal on these ? Looking at this thing is ain't worth thirty bucks but the cheapest I can find is a hundred and that is probably with zero returns and all that.   Not acceptable. Fucking boss got his ass caught in a sling on this. Guess whose problem it is.   I could quit. But it would be nice to get one and be the cool one or whatever.

Bruce Esquibel <bje@ripco.com>: Jun 09 01:13PM > whose problem it is.   > I could quit. But it would be nice to get one and be the cool one or > whatever.     I don't have a solution, the $100 seems to be the price.   My guess is the module is associated with Bang & Olufsen so it's going to stay high because of that fact. Unless there was a chinese knockoff at some point in time, better find out what size sling will fit your boss.   -bruce bje@ripco.com

"Arfa Daily" <arfa.daily@ntlworld.com>: Jun 09 09:25AM +0100 > one-off job , cannot justify the prices or even to hire one for one day.   > I've now got a test patch of wall with painted on gloss black 3 letters of > the right size, will wallpaper over it on Monday.   I was going to suggest the FLIR one. But how about the local fire brigade ? They like to get involved in 'projects' and have probably the most advanced thermal imaging cameras available. They can see bodies through walls, so how about 'illuminating' the area with infra red from the opposite side, and then seeing if the letters 'obstruct' the infra red passing through the wall enough to be able to read them with such an item ?   Arfa

N_Cook <diverse@tcp.co.uk>: Jun 09 10:41AM +0100 On 09/06/2015 09:25, Arfa Daily wrote: > red passing through the wall enough to be able to read them with such an > item ?   > Arfa   Events have overtaken this project. Since my last visit they've removed the wallpaper, not surprising as a horrible green. On the negative side the walls had been emulsioned with white emulsion paint some years before the wallpaper went on. On the positive side , as standard white emulsion, it should be easier to get permission to strip back this top layer of paint, and easily repaint if nothing there. I've tried oblique NIR on it and nothing seen. A youngster around reckoned he could see a letter under the paint with his young eyesight but not myself or the NIR video capture with waving torch. But we now know exactly where to strip back the paint as 2 bits of the text, top and bottom of it, were not painted over in effect, which shows there is likely more text for any doubting Thomases. Top bit not covered and lower bit emerged with routine daily cleaning rubbing back the paint enough to make out some letters. I've tried diluting none methyl-chloride paint stripper 1 to 3 with meths and that gently removes emulsion but leaves any gloss paint underneath, untouched. Just need permission now

"David Farber" <farberbear.unspam@aol.com>: Jun 08 11:39AM -0700 Phil Allison wrote: > going high when they wear out.   > I have seen serious damage done to 5V logic when this happens.   > ... Phil   Hi Phil,   I was forgetting about the pulsing action. I guess I was thinking about a standard AC transformer operating in the 60 Hz range. I imagine it would hold true that whatever the transformer pulse/sinusoidal frequency is, the choke belongs at the end of the line.   Thanks for your reply. -- David Farber Los Osos, CA

"David Farber" <farberbear.unspam@aol.com>: Jun 08 11:44AM -0700 Jeff Liebermann wrote: > capacitor(s), most would not recover. I never bothered to > troubleshoot further and just recycled them. Thanks for the hint > about the zener.   Hi Jeff,   As you suggested, I installed a 5.6v zener and it works fine now. The output voltage is a solid 5.17v.   Thanks for your reply. -- David Farber Los Osos, CA

"David Farber" <farberbear.unspam@aol.com>: Jun 08 11:45AM -0700 Mark Zacharias wrote:   > For example, Panasonic put an 18 volt zener across the 14 volt line.   > If your rated output is 5 volts, maybe a 6 volt zener.   > Mark Z.   Hi Mark,   As soon as I found the short, those marvelous Panasonic VCR power supplies came to mind. I installed a 5.6 volt zener and it works fine now.   Thanks for your reply. -- David Farber Los Osos, CA

"Arfa Daily" <arfa.daily@ntlworld.com>: Jun 09 01:31AM +0100 "Phil Allison" <pallison49@gmail.com> wrote in message news:f5a1ba52-ed7d-4ef8-8aab-578ef04e9373@googlegroups.com...   > I have seen serious damage done to 5V logic when this happens.   > ... Phil   David - see Phil's answer regarding the choke being first. And +1 on his observations about serious damage occurring when a cap goes high ESR and the control loop 'lets go' in its efforts to correct for what it sees as the low output voltage. Notable among these cases are cheap Chinese DVD players and set-top boxes, but I have also seen it happen on equipment from what you would normally consider to be 'reputable' manufacturers ...   Arfa

Phil Allison <pallison49@gmail.com>: Jun 08 07:06PM -0700 Arfa Daily wrote:     > output voltage. Notable among these cases are cheap Chinese DVD players and > set-top boxes, but I have also seen it happen on equipment from what you > would normally consider to be 'reputable' manufacturers ...   ** The examples I had in mind were Yamaha Multi FX processors like the SPX90 and a few relatives.   The SMPS was on its own PCB and there was enough heat to dry out the electros on the DC rails - particularly the 5V one. That rail could rise to nearly double voltage and take out a whole bunch of 74LS ICs and others that were strictly 5V.   The same PCB had the dreaded "yellow glue" dobbed all over the place eating the leads off small electros, zeners and resistors in the control loop.   After a full clean up and fitting all new electros, I added a SCR crow bar to the 5V output to protect the main board in future.       .... Phil

"Arfa Daily" <arfa.daily@ntlworld.com>: Jun 09 09:29AM +0100 "Phil Allison" <pallison49@gmail.com> wrote in message news:5942d2d7-2abb-4cd1-8e4d-306032a9222a@googlegroups.com...   > After a full clean up and fitting all new electros, I added a SCR crow bar > to the 5V output to protect the main board in future.   > .... Phil   Seems like a good move ...   Arfa

M.Joshi <M.Joshi@eternal-september.org>: Jun 08 09:15PM Hello Ken,   The above tests were carried out with the main PCB removed from the laptop and a known working AC adapter from another similar laptop.   The series of clicks seem to be emitted from both the left and right speakers for two cycles then stop until the power button is depressed again.   Thanks.

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