Author Topic: Clean and examine inside my partially broken Tektronix DSO - precautions ?  (Read 1559 times)

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Offline lordvader88

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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 90s

I 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 have
http://kripton2035.free.fr/Resources/TEK2430A_serv.pdf
 

Offline tautech

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Re: Clean and examine inside my partially broken Tektronix DSO - precautions ?
« Reply #1 on: December 27, 2016, 04:57:40 am »
RTFM = the Tek Service manual that you say you have will have all the necessary precautions outlined, plain as day.  ;)
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Offline lordvader88

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Re: Clean and examine inside my partially broken Tektronix DSO - precautions ?
« Reply #2 on: December 27, 2016, 06:36:02 am »
Destruction  of  Army  electronics  materiel  to  prevent
enemy use shall be in accordance with TM 750-244-2
 

Offline tggzzz

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Re: Clean and examine inside my partially broken Tektronix DSO - precautions ?
« Reply #3 on: December 27, 2016, 09:10:11 am »
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.
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
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Offline oldway

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Re: Clean and examine inside my partially broken Tektronix DSO - precautions ?
« Reply #4 on: December 27, 2016, 09:17:03 pm »
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.
 

Offline VK5RC

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Re: Clean and examine inside my partially broken Tektronix DSO - precautions ?
« Reply #5 on: December 27, 2016, 09:46:32 pm »
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
Whoah! Watch where that landed we might need it later.
 

Offline tautech

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Re: Clean and examine inside my partially broken Tektronix DSO - precautions ?
« Reply #6 on: December 27, 2016, 10:18:19 pm »
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/
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Offline lordvader88

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Re: Clean and examine inside my partially broken Tektronix DSO - precautions ?
« Reply #7 on: December 30, 2016, 06:20:59 am »
`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
 

Offline cheeseit

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Re: Clean and examine inside my partially broken Tektronix DSO - precautions ?
« Reply #8 on: December 30, 2016, 10:20:32 pm »
RIght now I'm just wondering where to look most

I'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?
 


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