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mhooker32@gmail.com: Aug 27 08:33AM -0700 can 1 sub a 4007 diode for a 2070? its a simple delay circuit on a coil with a capacitor   thanks

Ralph Mowery <rmowery28146@earthlink.net>: Aug 26 03:20PM -0400 In article <xPydnQbP4MVGFDzEnZ2dnUU7-fXNnZ2d@giganews.com>, spam@flippers.com says... > early 70s and can scan me the page(s) on the Q4003M3 that would be > great. I have found sheets online for other flavours of the Q4003 > series, but just not the Mx version.   Try this page.   http://www.datasheetarchive.jp/shortform-datasheet/Q4003M3.html

John Robertson <spam@flippers.com>: Aug 26 12:37PM -0700 On 2017/08/26 12:20 PM, Ralph Mowery wrote:   > Try this page.   > http://www.datasheetarchive.jp/shortform-datasheet/Q4003M3.html   Ah, yes, I had previously found that page. I just trust the manufacturers spec sheets more than a synopsis version. It is probably accurate, but who knows?   Thanks,   John :-#)#

"Dave M" <dgminala@mediacombb.net>: Aug 26 09:52PM -0500 John Robertson wrote: > series, but just not the Mx version.   > Thanks!   > John :-#)#     The Teccor triac part numbering scheme says that the "M" is for a non-isolated TO-218 package. You could just substitute another package type such as the "F" or "R" package and get the same triac in a slightly different package. Looks like the "M" package was discontinued for triacs years ago,   Dave M

John Robertson <spam@flippers.com>: Aug 27 12:31AM -0700 On 2017/08/26 7:52 PM, Dave M wrote: > different package. > Looks like the "M" package was discontinued for triacs years ago,   > Dave M   Yes, I have tried already a few other sensitive gate TRIACs (2N6073 is close) in place of this one, but none seem to work the same way even when they appear to have similar ratings. The TRIAC is controlled by a LED/Photo-resistor (Vactrol) instead of a LED/Opto DIAC or similar. Appears to be using Quadrant II control where the Vactrol enables the TRIAC via a 12K resistor to M1 where M2 is connected to the load. M1 is tied to the power return/neutral (white) side of the 115VAC power. Here is the PDF circuit:   http://www.flippers.com/pdfs/Vactrol_controlled_TRIAC.pdf   I have tried subbing a MOC3020 LED-OptoTriac but that didn't work reliably. Basically this circuit works by a CDS cell on the input that reacts to a photoflash strobe in my rifles at the gallery. Problem is this is 1970s tech and they are gradually failing. Recapping helped, but now the opto-couplers are breaking down and my transistor theory is too weak to change this one-shot monostable timer output to trigger something more up to date in TRIAC drivers.   I just need to sit down and spend a couple of hours on this project.   Thanks,   John :-#)#   -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out."

Tim Schwartz <tim@bristolnj.com>: Aug 27 06:45AM -0400 Hi,   Electronic Surplus in Ohio has a version available in a different package. I don't know it this helps or not but:   http://www.electronicsurplus.com/catalogsearch/result/?cat=0&q=Q4003   I've found them to be a reliable vendor.   Regards, Tim       On 8/26/2017 10:46 AM, John Robertson wrote:

"Ian Field" <gangprobing.alien1@virginmedia.com>: Aug 26 07:21PM +0100 <stratus46@yahoo.com> wrote in message news:142986a1-f4f0-4dcb-9114-e3059a349681@googlegroups.com...   >> Thanks for any help.   > If you can live with it as non bootable data only, put it in a USB3 > enclosure and use it that way. XP is fine with 3tb USB drives.   Someone gave me one of those they'd dropped on the USB connector - figuring out where all the ripped up tracks went became a "back burner" project.

"Ian Field" <gangprobing.alien1@virginmedia.com>: Aug 26 07:25PM +0100 "Mike Tomlinson" <mike@jasper.org.uk> wrote in message news:oNOp3YHwVKoZFwb6@jasper.org.uk... >>one..........   >>Thanks for any help.   > This is the wrong group for a start.   Which would you reccomend?

Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net>: Aug 26 02:29PM -0400 On 08/26/2017 02:21 PM, Ian Field wrote:   > Someone gave me one of those they'd dropped on the USB connector - > figuring out where all the ripped up tracks went became a "back burner" > project.   I just got a couple of the Plugable ones (2.5/3.5 inch) and they work great--it really cut down my backup/restore times. I built myself a new Qubes box (Thinkpad T430, 16G, 1T SSD) which required restoring all my VMs from backup. (I could have used dd and then resized the partition and file system, but that's a pain on an encrypted partition.)   Cheers   Phil Hobbs   -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC Optics, Electro-optics, Photonics, Analog Electronics   160 North State Road #203 Briarcliff Manor NY 10510   hobbs at electrooptical dot net http://electrooptical.net

Mike Tomlinson <mike@jasper.org.uk>: Aug 27 04:46AM +0100 En el artículo <k2joB.1200256$DB.869387@fx04.am4>, Ian Field <gangprobi   >Which would you reccomend?   uk.comp.homebuilt   -- (\_/) (='.'=) "Between two evils, I always pick (")_(") the one I never tried before." - Mae West

Jon Elson <elson@pico-systems.com>: Aug 26 05:35PM -0500 MOP CAP wrote:   > shadow of the intended image. > ??? Is it the corotron and is it worth reparing? What is the corotron? > Thanks, CP https://www.fixyourownprinter.com/   has been very helpful in debugging problems on my laser printers in the past.   Jon

Chuck <ch@dejanews.net>: Aug 26 03:40PM -0500 On Sat, 26 Aug 2017 06:11:09 -0700 (PDT), jeff.panasuk@cfl.rr.com wrote:   >On Thursday, June 29, 2017 at 5:03:35 PM UTC-4, jeff.p...@cfl.rr.com wrote: >> Back in February or March of 2010 the TV began changing from any channel to channel 2 intermittently. Sometimes very frequent. Other times more intermittent but it would not go more than a few hours without the problem popping up. Replaced IC0102 (MN14834HH) Main IC for the Channel Selection Ckt but no help. Remote control IR circuit not the problem as I disabled it. Over time have replaced some bad unrelated hw (burnt resistor, Caps). Have schematics and service manual but can't isolate the problem. Nice picture and everything else works fine. Unit in storage but every 4 months or so, when I see it and think about it, I fire it up. Hate to trash this old tv. Kind of part of the family now. Has anyone ever heard of this before?   >8/26/2017 One final note. It's been over 6 weeks now and the tv has worked fine since cleaning the 3-way switch. I guess it's fixed. Thanks for all your help guys. You are welcome. I knew the switch would cause the tuner to go back to channel 2. Back in the 80s, the sets weren't out long enough for the switches to go intermittant.   --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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