tag:blogger.com,1999:blog-1592992209402300549.post3473354176777376781..comments2024-03-28T08:06:43.198-04:00Comments on The Silicon Graybeard: There's Never A Shortage of Things to Repair or ReplaceSiGraybeardhttp://www.blogger.com/profile/00280583031339062059noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-1592992209402300549.post-55178218873872089592018-01-23T22:34:29.088-05:002018-01-23T22:34:29.088-05:00I haven't fired up my scope in awhile, it'...I haven't fired up my scope in awhile, it's not as nice as a Tek 475 either. I was motivated to fix the central vac system after it failed right before Thanksgiving during the final house cleanup. We tried a repair place who blew us off when they found out how far away we were, and we had to use the portable vacuum (not a good substitute). I was however able to diagnose the failed control board, find a $43 universal substitute board on line instead of the $200+ official replacement part and get it going again. Now I know a lot about central vac systems, and I really impressed my wife. EricNhttps://www.blogger.com/profile/05032785464061498419noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-21421451933141968582018-01-21T20:06:37.466-05:002018-01-21T20:06:37.466-05:00I spent a week on my wife's Singer going throu...I spent a week on my wife's Singer going through it and replacing anything that looked worn, and flushing out old lube, replacing it with some synthetic stuff.<br /><br />It will probably now outlast us both.....drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-25739806921590484422018-01-21T20:01:44.032-05:002018-01-21T20:01:44.032-05:00I still have my (now old) 485 in working condition...I still have my (now old) 485 in working condition (quick prayers). Even has the camera mounts as well (no camera though). <br /><br />The new scopes may be better in many ways, but I still have a fondness for the old analog scopes where I twist a knob instead of searching through a menu. <br /><br />A whole lot of today's technology is built on a foundation of yesterday's technology. Meaning yesterday's technology is still in use. A scan through DigiKey indicates a lot of 70s and 80s ICs are still top sellers. And in packages I can see and still solder by hand.<br /><br />Good luck with the repairs - it's a good scope.<br /><br />QAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-29263270303106451692018-01-21T12:57:33.804-05:002018-01-21T12:57:33.804-05:00After two different repair shops gave up, an old m...After two different repair shops gave up, an old mechanical Pfaff sewing machine is sitting on the dining room table in pieces. That is a complex piece of kit- a collection of shafts, cams, gears, pitman arms ,eccentrics to baffle Rube Goldberg. And every one adjustable, so finding a fixed starting position for adjustment is like trying to hold smoke. I have wondered if the piece is unnecessarily complex, like so many German designs. And then I started wondering what the maintenance hours per hour of flight time were on a P48 or P51 vs a FW190 or a BF109...... <br /> So my wife and I wander in from time to time and work on it, trying to delve out it's secret handshake to get it working again...<br /> ravennoreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-68468677713817393202018-01-21T12:17:47.980-05:002018-01-21T12:17:47.980-05:00They're on my short list. A friend bought one...They're on my short list. A friend bought one a few years ago and it was impressive. This is a 200 MHz oscilloscope, and it looks like a dual channel Rigol is over $800 while to replace this with another one is more like $250, so there is that. <br /><br />All modern instruments are computer with the necessary analog hardware attached, and the LCD screen gets rid of the HV supply, which is my problem right now. The other side of getting another 475 is that it's cheaper, but is it going to last as long a newer scope? <br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-47853780437233621412018-01-21T12:11:49.400-05:002018-01-21T12:11:49.400-05:00If by chance you find the old CRT model won't ...If by chance you find the old CRT model won't come back to life, have a look at the Rigol o'scopes: they have a good rep in the hobby world, and if you want a really capable portable logic analyzer/scope the Saleae USB one is really hard to beat. Both can be had for under $400, and for non-professional work they're more than good enough. But trying the under $10 option first is wise, certainly!DC(#sqrt(-1))noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-83922915836615810942018-01-21T10:58:02.192-05:002018-01-21T10:58:02.192-05:00I SWAG it could be a shorted cap in the CRT area.
...I SWAG it could be a shorted cap in the CRT area.<br />There, pinned it right down for ya. Ritchiehttps://www.blogger.com/profile/08075903551422300106noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-39764076433729882732018-01-21T07:16:44.086-05:002018-01-21T07:16:44.086-05:00And you bought five chances for less than ten buck...And you bought five chances for less than ten bucks<br />priceless<br />Now if I could figure out how to fix my pocket radios.<br />MikeAnonymoushttps://www.blogger.com/profile/09719315846192917063noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-22117840624073783862018-01-20T23:05:48.127-05:002018-01-20T23:05:48.127-05:00Fix the tools to fix the tools to fix the tools......Fix the tools to fix the tools to fix the tools........<br /><br />zzukhttps://www.blogger.com/profile/09170254834612495111noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-52180455909071398312018-01-20T22:14:54.522-05:002018-01-20T22:14:54.522-05:00I've got a 2465B, and it's the nicest scop...I've got a 2465B, and it's the nicest scope I've ever owned!drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.com