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Registered Member #2628
Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
I was a bit curious to see the insides of my scope, peeking through the vents I saw a whole bunch of old and outdated parts just waiting to say Hi.
I thought Ill share with you guys some pictures of what it looks like.
First off, the scope assembled:
There are a screw tabs that need to be turned counter-clockwise 90 degrees to loosen the cover.
Popped the cover off
Close up
second side uncovered
HV supply cover - Ill deal with it later
CRT leads - probably X-Y
A close up on the board: 1972... Older then myself thats for sure... the dust and date do not lie.
more assorted boards
I removed the cover of the HV supply, there is a black box with an HV lead (most likely cathode)
This scope had 3 modules, but I only use 2 of them (dont really need the third one.) first module is the scope's settings, seconds/div, etc. the other is for 2 channels.
Sockets for modules:
I noticed an odd looking coil in there.. I have no idea what it is for, anyone know?
closeup of coil
another close look of the tube's what is most likly either the X/Y leads. they are little ceramic plugs that fit inside the tube.
other side of a powersupply
Back of the socket board for the modules
The IC's do not have any part numbers of identification.
Bottom cover
Removed, you see the underside of a power supply and the railing for the modules.
more capacitors
And last but not least, the scope running without the covers
Id like to know if anyone has any idea what that big coil of wire is used for.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
I bet the "coil" is a coaxial cable transmission line, used to delay the vertical deflection signal. Lets you see the waveform a few nanoseconds before the horizontal sweep trigger event.
Registered Member #2628
Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
The shroud's made out of tin sheeting. it does not serve as a critical part for function, but its there to protect the CRT from damage (my guess is from tools or accidents when the techs where building the scope). It can also protect the scope from the CRT itself. In an event of rupture, and if the tube actually managed to shatter itself to many pieces, the boards and parts would be spared of the flying glass.
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Inside a 5403 Tektronix scope (lots of pics)
