开云体育

Hello all!

I've got a 7000 Series Standardization Plug-In 067-0587-02 that is acting strange. Sometimes the Gain setting on the TEST switch will show a compressed set of lines instead of the correct 1 line per division and the Aux-In is distorting the waveform. I swapped the Aux-In first Hybrid IC U350 for one out of my 7904A and no change was observed. I removed and re-installed the 2nd Hybrid U390 and the waveform was better but still distorted. Due to the low use of the plug-in from the seller I purchased it from I suspect that the contacts in the HYPCON's and the TEST switch contacts may need cleaning. There is a cleaning procedure in the manual I can follow but I was wondering about the application of DeOxit Gold to the contacts?

Thanks in advance!

Reijek, bonjour

the Elastomeric switches are the most delicate and finicky to fix.

Deoxit is normally fine for contacts BUT use of ANYTHING not in the official Tektronix proceedure is risky and likely to ruin the switches.

I doubt if anyone has tried this, so you are on your own.

I strongly recommend to follow the exact Tektronix manual direction and type of cleaning solution.

Bon courage

Jon

I've cleaned and adjusted these - and they are a pain. To clean the pads on the PCB, you'll need to remove the switch assembly (follow instructions carefully), and use pure isopropyl alcohol for cleaning and blow dry afterward.

I would suggest that Deoxit is not a great idea for these.

I can't remember if the adjustment was documented or whether I just worked something out by looking at it - unfortunately I didn't keep notes.

D.