Most of the soft keys on my HP 54600A do not work. Here's the details: I noticed that the display was triggering on Ch 2 and wanted to change to Ch 1. I pressed the trigger source key to bring up the source menu which shows Ch 2. Pressing any of the four keys does not make a change. I then tried the trigger mode button and the mode menu came up showing normal trigger. The only key that worked was the 5th from the left. The trigger mode is now set for TV which doesn't help very much and none of the menu keys are operative. At the minimum I would like to change to trigger on either Ch 1 or 2 and may not need to make other changes. I use the digital oscilloscope mainly for development of op amp circuits running at 6 - 10 Hz. Suggestions?
A second question: are there repair shops for this CRO?
TIA
Carl
A second question: are there repair shops for this CRO?
TIA
Carl
I had 33 model 54600A oscilloscopes to look after in the undergrad student electronics teaching laboratory. Your problem re the soft keys not working is very easily fixed I have done over twenty of them.
First pull out the brilliance knob and shaft from the panel then remove the case from the scope. There is a retaining clip on the top side of the chassis behind the power supply, push it down with a screw driver to unclip it, there is one more on the top side under the top edge of the front panel use the screw driver to unclip this then pull the front panel away carefully. Slide the ribbon cable out of the plastic clip glued to the top of one of the input channel shielding covers and lay the front panel down on the bench, you will have to stand the scope on its side to do this. You will then see the soft key PC board with the printed ribbon cable coming off the end near the centre of the panel, using a small screwdriver unclip this and withdraw it from the panel, also pull out the grey soft key strip. Use a reasonably lint free cloth and isopropal alcohol clean the gold plated contacts on the PC board, you will see quite a bit of dirt on the cloth. Then put a drop of alcohol on each of the black contacts on the soft key strip and clean them with the cloth. Dust off both items make sure there is no fluff or lint on them, refit the grey soft key strip then slide in the contact PC board making sure it clips into place. Replace the front panel to the scope. This is a 100% cure.