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Old 27th Oct 2020, 7:03 pm   #1
NBSTech
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Default Oscilloscope problems

I'm wondering if any one can help me with a small(ish) problem.
I'm the Avionics/Electrical Tech(of some vintage) at the Lincolnshire Aviation Heritage Centre and I've been given 2 oscilloscopes to repair. One is a CT436, which although it powers up and the heaters glow there's no display. And the other is a Monitor 4436, this works but needs some adjustment.

So my question is, do any of you have any schematics or servicing information on these scopes?

Many thanks, in advance.
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Old 27th Oct 2020, 7:21 pm   #2
Cobaltblue
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Default Re: Oscilloscope problems

I think the CT436 info is pretty freely available there is a manual here

http://www.garronn-electronics.co.uk/ct436manual.pdf

Also search the forum it has been on here many times

The Monitor 4436 there was a thread a while back it looks as if Andy was able to supply the info (PM him)

https://www.vintage-radio.net/forum/...d.php?t=111762

Cheers

Mike T
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Last edited by Cobaltblue; 27th Oct 2020 at 7:23 pm. Reason: Added info on 4436
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Old 28th Oct 2020, 8:33 am   #3
M0FYA Andy
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Default Re: Oscilloscope problems

I'm going to have to do some digging, I can't instantly locate that information, bear with me, please!

Andy
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Old 28th Oct 2020, 8:51 am   #4
M0FYA Andy
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Default Re: Oscilloscope problems

OK, found it, phew!

I've put it in Dropbox, here -

https://www.dropbox.com/sh/neunak4kp...LJssrDaca?dl=0

Andy
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Old 28th Oct 2020, 4:48 pm   #5
NBSTech
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Default Re: Oscilloscope problems

Thanks Andy, just what I needed.
In answer to your questions, these were used on the Carpenter Relay bench in the various NBS bays I worked in. So as soon as I saw it in the archive at the centre I thought "must get that out and see if it works" which it does and will be incorporated into my little avionics bay at the rear of the hangar.
Thanks again, top job.
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Old 28th Oct 2020, 5:53 pm   #6
M0FYA Andy
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Default Re: Oscilloscope problems

I wish I had the whole of that AP, it doubtless contains all sorts of interesting information. That excerpt is all I have.

Andy
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