Clean and examine inside my partially broken Tektronix DSO - precautions ? - Page 1
Forum section: electronics / repair

author: lordvader88
author_rank: Frequent Contributor
timestamp: December 27, 2016, 04:45:31 am
content: I'm thinking static wise and stuff. Its winter time, I have carpet in my room. I've worked on my computer swapping stuff around and cleaning it plenty of times, and usually just assumed I'd be grounded off the chassis.I really really don't want to start poking around and making it worse. Its at least 2nd and I have no idea its history, but chances are its never been cleaned inside. The model is from the 80s or early 90sI could wear rubber boots, or am I worrying too much ?Wow and I did find the US Army and MC manual for this thing, way more detailed than the hard copy manual I havehttp://kripton2035.free.fr/Resources/TEK2430A_serv.pdf

author: tautech
author_rank: Super Contributor
timestamp: December 27, 2016, 04:57:40 am
content: RTFM = the Tek Service manual that you say you have will have all the necessary precautions outlined, plain as day.

author: lordvader88
author_rank: Frequent Contributor
timestamp: December 27, 2016, 06:36:02 am
content: Destruction of Army electronics materiel to preventenemy use shall be in accordance with TM 750-244-2

author: tggzzz
author_rank: Super Contributor
timestamp: December 27, 2016, 09:10:11 am
content: There are two principal dangers...Firstly to the equipment, e.g. ESD. Non-conductive rubber boots will make that worse.Secondly to you, e.g. if there is a CRT with 3kV and 17kV. Conductive rubber boots will make that worse.So, learn the various failure mechanisms, do some basic research, take the different necessary precautions to reduce the risks.

author: oldway
author_rank: Super Contributor
timestamp: December 27, 2016, 09:17:03 pm
content: Remember that CCD's are criticals, they run hot and must not ever be allowed to over heat. They are extremely rare devices, do not stress your CDD's with lack of air flow.The 2430 without his cabinet need an external fan to cool the CCD's.

author: VK5RC
author_rank: Unknown
timestamp: December 27, 2016, 09:46:32 pm
content: The one comment I would pass on is to understand your scope before too much exploration. Esp how capacitors can 'recharge' (dielectric reabsorbtion) and use of a high voltage probe. Tek also have a good fault finding manual for older scopes. Lots of good advice.http://www.sphere.bc.ca/test/tek-parts/troubleshooting-scopes.pdf

author: tautech
author_rank: Super Contributor
timestamp: December 27, 2016, 10:18:19 pm
content: It probably needs to be pointed out the OP has already started another thread on his broken scope and at this time best advice would be to RTFM.https://www.eevblog.com/forum/testgear/tekronix-2430a-can't-figure-out-vertical-position-setting/

author: lordvader88
author_rank: Frequent Contributor
timestamp: December 30, 2016, 06:20:59 am
content: `nope just cracked her open now. 1 thing, it has some little pieces of packing Styrofoam in it. When I got it, it was just in a box full of it, without a bag around the scope.Yeah I know the CRT dangers stuff, no worries there (for the most part)I'm not expecting to find anything fired, whatevers wrong is probably hidden and not even worth trying to fix, I'll save the money towards a new scope.RIght now I'm just wondering where to look most

author: cheeseit
author_rank: Regular Contributor
timestamp: December 30, 2016, 10:20:32 pm
content: Quote from: lordvader88 on December 30, 2016, 06:20:59 amI'm far from being any kind of expert, quite the contrary actually, but as already pointed out maybe the service manual and the fault finding manual would be a good place to start to narrow it down?