[Test-Equipment] Tek RM45

[Glenn Little WB4UIV]

The reason for the silver bearing solder is to keep the metalized 
contacts on the ceramic terminal strips in place.
If you use non silver bearing solder, you will leach the silver out 
of the metalized contacts.
This is one of those chemical things better explained by a chemist.
You see the same thing with older soldering iron tips made of copper.
This is one reason why the tips are now iron plated.
Surface mounted parts may use silvered terminals and require silver 
bearing solder.

To use non silver bearing solder to repair a Tektronix scope once 
will not completely destroy the contact.
To use it often will destroy the bond to the ceramic terminal strip.

Hope this helps.

Glenn


At 11:08 AM 3/1/2015, you wrote:
>I am parting out an RM45 oscilloscope.  I would like to use the 
>transformer for something else down the road.  Would anyone know the 
>specs of its transformer or perhaps have a soft copy of the 
>schematic?  If anyone needs parts (not tubes) from this please don't 
>hesitate to ask.....free for shipping cost.
>
>I've heard you need to use silver solder if you are going to re-use 
>the ceramic terminal strips.  Why is this and what happens if you 
>use rosin core tin-lead solder?
>
>Thank you,
>
>Brian Harris, WA5UEK
>cell 214-763-5977
>email cosmophone at yahoo.com
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