tag:blogger.com,1999:blog-2131958746786008795.post8251517634995813979..comments2024-01-24T11:52:22.915-05:00Comments on playing with bits: Tektronix 2445B Capacitor ReplacementBradhttp://www.blogger.com/profile/13205011980298945921noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-2131958746786008795.post-84139019928642456012019-12-16T11:21:53.558-05:002019-12-16T11:21:53.558-05:00the smd resistor around DAC312H are corrosion and ...the smd resistor around DAC312H are corrosion and can't know how much ohm? <br />please take the photo closeup for them? Anonymoushttps://www.blogger.com/profile/14508781957345258249noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-15490583455504811022019-01-01T01:15:15.567-05:002019-01-01T01:15:15.567-05:00As that mean sounding British sounding anchor on M...As that mean sounding British sounding anchor on MSNBC said, DO IT! My best piece of test or ham equipment, my TEK2445B just smoked so badly when running on earlier, analyzing power line <br />rfi at my W4HDL QTH earlier on New Years eve, the fireworks inside made me run to unplug it and put it on the back porch and grab the necessary TORX tools (almost the garden hose too) and got it opened up ASAP. Glad to find it is in the more basic technology PSU boards section and it is not uncommon! This one article nails all the renovation details 100%, that I am going to order first thing in 2019, all of these recommended parts from DigiKey, or Mouser. THANKS, Brad's 2014 posting and commenters already made my new year better!Love My Wifehttps://www.blogger.com/profile/10933955303393326386noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-83618136871393689782018-09-11T21:46:22.387-04:002018-09-11T21:46:22.387-04:00Thanks very much for the article and the parts lis...Thanks very much for the article and the parts list. I just scored a Tek 2445B (150mHz) of my own and as insurance, I think I am going to re-cap it. Your article seems amazingly helpful. I thank you.<br />Anonymoushttps://www.blogger.com/profile/11608592120122035314noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-6237409567822323002018-05-05T18:57:11.803-04:002018-05-05T18:57:11.803-04:00Hi, i have bought a 2467B, unfortunately the displ...Hi, i have bought a 2467B, unfortunately the display is showing two raws of flickering stationary dots at the top and two raws at the bottom of the crt. Have you seen this issue before and what might be causing this?<br />Thank you for your help.Adamhttps://www.blogger.com/profile/00312063652767032593noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-47189000305004144042017-03-19T14:10:05.024-04:002017-03-19T14:10:05.024-04:00also need to replace 4.7uf@35 Tant and 270k resist...also need to replace 4.7uf@35 Tant and 270k resistor on A3 and A2 boards respectively. I have been working on 2465b and 2467bs have several of my own and most I buy and refurbAnonymoushttps://www.blogger.com/profile/03468388641574556903noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-48364531136938731262017-03-02T14:29:54.946-05:002017-03-02T14:29:54.946-05:00Is there an updated parts list available?
Is there an updated parts list available?<br />Anonymoushttps://www.blogger.com/profile/00597577727667354997noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-23109007010284297352017-02-27T10:11:33.140-05:002017-02-27T10:11:33.140-05:00Hello Mij. OP is using the partnumbers from Digi-k...Hello Mij. OP is using the partnumbers from Digi-key. For the Netherlands you could try Mouser Electronics. I have a problem with my 2445B and found everything over there.Anonymoushttps://www.blogger.com/profile/09119128297607953316noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-12548519455759966332017-02-27T10:06:03.906-05:002017-02-27T10:06:03.906-05:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/09119128297607953316noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-92115698997447435312017-01-29T18:44:13.174-05:002017-01-29T18:44:13.174-05:00You seem to hve left out C1132 - 10uF 160V. It...You seem to hve left out C1132 - 10uF 160V. It's on the 87V unregulated line, and the schematic notes that the voltage on that line is 98.7V, so if you're using a 100V, you're sailing close to the wind!<br />I switched my 2465 on for the first time in a year or two, and after about 3 minutes, it made megasmoke and I had to take it outside so it wouldn't stink the house out. It turned out to be one of the oblong, high voltage caps in the HV power section that had blown apart.<br /><br />I have been finding it very difficult to source allof these caps. Nobody has all of them, and some, like the high capacity, high voltage ones (eg 250uF 200V - I see you used 330uF 250V) are on a 16-week lead time.Mijhttps://www.blogger.com/profile/11274464727104281757noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-28383903324678280482014-12-26T21:29:45.839-05:002014-12-26T21:29:45.839-05:00Thanks for the list. I used to it replace the pow...Thanks for the list. I used to it replace the power supply caps on my 2465BDM. These differences may be a result of my particular unit:<br /><br />I had a 1 uF, 50V radial left over.<br /><br />There was a 4.7 uF, 35V radial hiding under the 220 uF capacitor holder. I replaced it with a 4.7 uF, 50V I had in my parts bin.<br /><br />There was a 10 uF, 160V radial adjacent to J304. I replaced it with 10 uF, 250V, 493-13127-1-ND.<br /><br />I put a heatsink on the infamous U800. I trimmed down the length of HS273-ND with a dremel cutoff wheel and applied it with thermal tape BER347-ND.<br /><br />The fan was replaced with 12 VDC, 80x20mm, 603-1048-ND.Anonymoushttps://www.blogger.com/profile/05043157248661782570noreply@blogger.comtag:blogger.com,1999:blog-2131958746786008795.post-5413465881160433452014-06-17T02:03:29.163-04:002014-06-17T02:03:29.163-04:00Hi, shouldn't be P10729-ND instead of P4639-ND...Hi, shouldn't be P10729-ND instead of P4639-ND? Thanks for the list!Anonymoushttps://www.blogger.com/profile/07861021516412908864noreply@blogger.com