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Dear tektronix fans

To introduce myself Hubert ON6JZ living in Belgium and an electronics repairer for 45 years
I now have a tektronix 2712 on the table that does not work.
It has been idle for over a year.
At startup it gave all kinds of error messages , after replacing both batteries on the digital board and on the digital option board it seems to start up normally ,
but I get no response from any button and the encoder does nothing either
All supply voltages are correct and viewed cleanly with a scope
I replaced all the smd electrolytics on the sweep board and on the digital storage board
No result
On the screen I get an image of out of memory.
Does anyone have any tips on where I can look for this error?

Thanks in advance

Hubert

Check to see if the 100MHz oscillator has output. It is just to the right of the CRT looking from the front.
If there's no output then that is likely the source of the issues, but may be other problems also.

Best,
Paul

Hello Paul
thanks for the info I have just ceck the 100 Mhz oscillator but thats up and running ?
any other problems to check ?
best regards
Hubert