Tek 2225 cleaning

[Http 418]

Hi all

So trying to setup a small home lab, since Dave inspired me. So surfing abit online turned up a tek 2225 at a desent price. Unfurtunatly it didnt come with any probes

So first newbie question; what probes do I need? I found a set of the probes the would have came with scope, but they aren't exactly cheap, so can I just get a set of 100 Mhz off ebay or is that bad idea?

So as Dave allways say's, don't turn it on, take it apart but the only revealed alot of dust, but not the good kind that you can get rid of with compressed air. Apparently it has been sitting om a smokefilled room and now all the dust is sticking to every thing.
What is the best way to clean the interior? Iso alcohol and q-tips or is the another way? What is the best alcohol to use? Iso or denatured?

Last question ( atleast in this post ) the channel 1 volts/div switch is really hard to turn and it isn't clicking into position as easily as channel 2, the problem seems to be linked. I'm hoping that the switch just needs a good cleaning. Would Kontakt chemie no. 61 do the job or would it be better to get a pure contact cleaner without any corrosion protection?

[G7PSK]

I have just had a similar problem, the scope was full of toner from a photo copier or lase printer, I put the boards into a large container with a gallon of denatured alcohol (meths) and swirled it around then blew of the excess and allowed to dry.

[c4757p]

Yes, most everything in there is safe to immerse in alcohol. I recently replaced a load of crusty capacitors in my 2445A, so the boards were thoroughly coated with flux, and I just took off the ceramic hybrids and the attenuator assemblies and dunked even the whole main board in denatured alcohol.

[KJDS]

Yes, most everything in there is safe to immerse in alcohol.

HIC! just tried it and it's mostly good, buer my vsipons is wonly sldkfzsc dfxg sef 

[selkathguy]

Yes, most everything in there is safe to immerse in alcohol.

HIC! just tried it and it's mostly good, buer my vsipons is wonly sldkfzsc dfxg sef

+1 good post 

[millerb]

I wouldn't bother trying to clean it up unless it wasn't working properly. A dirty oscilloscope is more useful than a ruined clean oscilloscope.

As for probes, the cheapies on eBay and Amazon are usually fine. A few months ago I picked up 2 100MHz probes for $20 on Amazon. They're labeled "Yang Xun". You get what you pay for. One probe was a little flaky to adjust and the 1x/10x switch was a little wonky.Then again, the guy who sold it, shipped it in a plastic bag so that may be the fault of being banged around in the mail.

[houdini]

yea i just got the cheap ones off eBay for my 2225 and they work fine.