sci.electronics.repair@googlegroups.com

Google Groups

micky <NONONOmisc07@bigfoot.com>: Feb 26 09:48PM +0200 In sci.electronics.repair, on Tue, 26 Feb 2019 08:09:02 -0800 (PST), Tim >> that, she said, got sound but no picture.   >She was on the roof with binoculars. She saw you coming a mile away.   >Now you're stuck with electronics that will cost you minimum $25 to recycle. You can't just throw this away, the trash people won't take it. You may even get fined for putting it out.   No fine afaik, they just ignore it. But she said that if I couldn't fix it, to bring it back and they would take care of it as before   >Repair? Unlikely. (based on posting history, electronic troubleshooting is not your strong suit)   I think you don't appreciate my humor.

Jon Elson <elson@pico-systems.com>: Feb 26 03:09PM -0600 On Tue, 26 Feb 2019 03:14:55 +0200, micky wrote:     > On a scale of 1 to 10, I'm about a 4 to 5 in ability to fix electronics.   > What are the chances *I'll* be able to fix this? I figure it needs a HV > rectifier tube like a 1AV4 (iirc) or a flyback transformer.   1AV4 rectifier? Was it made before 1960? I can't imagine any TV made after 1960 having a TUBE rectifier. And, I don't remember any 40" TVs back then.   Jon

Mike Coon <gravity@mjcoon.plus.com>: Feb 27 08:46AM In article <hrGdnZxqIsNmN-jBnZ2dnUU7-dGdnZ2d@giganews.com>, elson@pico- systems.com says... > after 1960 having a TUBE rectifier. And, I don't remember any 40" TVs > back then.   > Jon   And if there were any they could not have had a "flat screen" because of resisting the vacuum...   Mike.

etpm@whidbey.com: Feb 26 12:16PM -0800 On Fri, 15 Feb 2019 19:02:44 -0800, Jeff Liebermann <jeffl@cruzio.com> wrote:     >The link in the video to EEVblog doesn't work. This does: >"EEVblog #453 - Mysteries of x1 Oscilloscope Probes Revealed" ><http://www.eevblog.com/forum/blog/eevblog-453-mysteries-of-x1-oscilloscope-probes-revealed/?all> Greetings Jeff, Well, I watched that video you mentioned plus another two, one put out by Tektronix. I now understand WAY better what's going on. Thanks for the link and suggestions. I know it shouldn't matter but the EEVblog guy's voice bugs me. But his explanation was clear. And the pdf you posted a link to was also very educational. Thanks, Eric

Jeff Liebermann <jeffl@cruzio.com>: Feb 26 01:29PM -0800 >posted a link to was also very educational. >Thanks, >Eric   Y'er welcome. There's also a mess of magic (and confusion) with high voltage probes, where the frequency response varies with the applied voltage. See graph on Pg 1-12: <https://download.tek.com/manual/070822305.pdf>   Also active probes that work at GHz frequencies with input loading around 1M and 1pf. You can really get spoiled with those working around RF. "Active probes: why they are worth buying" <https://www.eetimes.com/document.asp?doc_id=1279659#>   I have the same problem with Dave Jones of EEVblog. Recently, he's made an attempt to shorten his videos and clean up his presentation, but it's still difficult viewing. Here's a clue: <https://www.youtube.com/user/EEVblog> "No Script, No Fear, All Opinions" Methinks a script and an editor might help.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Mike <ham789@netscape.net>: Feb 26 04:47PM -0800 On 2/26/2019 1:29 PM, Jeff Liebermann wrote: > voltage probes, where the frequency response varies with the applied > voltage. See graph on Pg 1-12: > <https://download.tek.com/manual/070822305.pdf>   That has nothing to do with the frequency response. Probes are VOLTAGE derated with frequency. Think about it... At infinite frequency, all the caps look like shorts and it lets the smoke out.

makolber@yahoo.com: Feb 26 01:39PM -0800 On Monday, February 25, 2019 at 3:57:23 PM UTC-5, David Farber wrote:   > -- > David Farber > Los Osos, CA   when you say you "try to power it on"   do you mean you push the physical power button on the printer?   or is the printer in sleep mode and you send it data which is supposed to wake it up?   m

David Farber <farberar.unspam@aol.com>: Feb 26 04:38PM -0800 > do you mean you push the physical power button on the printer?   > or is the printer in sleep mode and you send it data which is supposed to wake it up?   > m   Every evening I hold the power button down for a couple of seconds until it powers off completely. It is not in sleep mode. The only way to use it again is to hold the power button down for a couple of seconds until it powers back on. Then you can use it. I'm about to go hunting for some disassembly instructions because it wouldn't power on again today.   Thanks for your reply. -- David Farber Los Osos, CA

arnfinn.morvik@gmail.com: Feb 26 11:41AM -0800 Please send me:   Solution Manual Electronics : A Systems Approach (4th Ed., Neil Storey) Solution Manual Electronics : A Systems Approach (5th Ed., Neil Storey)   Thank you in advance Arnfinn

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.