ADVANTEST TR6142 bad keys replacement

Thread Starter

nsaspook

Joined Aug 27, 2009
9,754

I had one on the bench for ages that didn't work. Every key on the front panel was dead (the internal membrane was always high resistance). I found some switches that were close to the originals to bring the old girl back to life.


Almost like new. :)
 

AndreasR

Joined Jan 12, 2022
1
dear @nsaspook
i got the same instrument with exactly the same error in keys.
I searched half of the internet, mouser digikey rs components and others but i did'nt found switches to replace.
do u have a hint for me which kind of switches u used to repair this beatuful voltage/current source and where to buy them?
AndreasR
a nearly broken man;)
 

Thread Starter

nsaspook

Joined Aug 27, 2009
9,754
dear @nsaspook
i got the same instrument with exactly the same error in keys.
I searched half of the internet, mouser digikey rs components and others but i did'nt found switches to replace.
do u have a hint for me which kind of switches u used to repair this beatuful voltage/current source and where to buy them?
AndreasR
a nearly broken man;)
Tactile Switches 6mmX6mmX5.5mm
Not an exact fit but can be made to work as in the above example:
https://www.mouser.com/ProductDetail/Alps-Alpine/SKEGAEA010?qs=m0BA540hBPcuEkLfJ1JfyA==

These are in stock: https://www.mouser.com/datasheet/2/15/alps_s_a0002904755_1-2258550.pdf

You need to be really careful when removing the caps from the original switches.
 
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