Mark Sims skrev: > Interesting... I just fixed a couple of Tek CG551 and 5001 calibration > generators that had the same problem. Tek uses a DC isolated shift register > chain to drive the internal control signals. The clock and data lines run > through toroidal pulse transformers that are mounted on small plastic > carriers. Turns out that the where the toroid leads are attached to the > carrier leads they were broken. The toroids are not pookied down to the > carrier.
This is a typical design error where the designer should have spent a longer time at the repair-shop prior to getting onto the design desk in order to be experienced enough. I have repaired alot of equipment where people have not understood how unsupported weight may wear and tear over the years. People that think solder is some form of magic super-glue. For a few cases vibration isolation *might* be on their mind, but the solution got wrong never the less. Cheers, Magnus _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
