Timeline for Oscilloscope scrolling
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jan 4, 2020 at 14:54 | comment | added | Michel Keijzers | Thanks for the clarification. btw, I'm not intimidated about spraying, but (slightly) resoldering all caps. | |
| Jan 4, 2020 at 6:06 | comment | added | glen_geek | Switch contacts inside, particularly those involving the 3 front-panel triggering. There are also rotary switch wafers on the huge TIME/cm rotary involved too. Don't be intimidated - these can be attacked with a spray of contact cleaner (with a small dia. nozzle extension tube). Spray with power off (collecting drippings), then exercise. | |
| Jan 4, 2020 at 0:58 | vote | accept | Michel Keijzers | ||
| Jan 4, 2020 at 0:58 | comment | added | Michel Keijzers | Thanks ... I think I will start cleaning the contacts (I assume you mean the contacts on the outside)? ... because I don't feel too confident to try to repair it before it's really broken :-) | |
| Jan 4, 2020 at 0:56 | comment | added | glen_geek | Not likely related. Tapping fix suggests switch contacts need cleaning. Sometimes they come back with exercise - wiping away oxides/crud. There are a lot of switch wafers in there, some of which are activated at lower frequencies. Another tapping symptom is potentiometer wipers making intermittent contact. Many 'scopes are abandoned for reasons of intermittents like this. | |
| Jan 4, 2020 at 0:45 | history | edited | glen_geek | CC BY-SA 4.0 |
emphasize old equipment suffers from degraded capacitors
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| Jan 4, 2020 at 0:44 | comment | added | Michel Keijzers | Thanks for this information. Actually ... I found the problem, it mostly is present indeed at lower frequences (below 100 KHz). When I turn down the X position (smaller time per square), and gradually increase it, I either see scrolling or multiple 'beams' on the screen. The fix is: gently tap against the right side of the box... not very 'technical' or a sound solution, but it works ... can you maybe confirm if this might be related to your solution? (changing capacitors?) | |
| Jan 4, 2020 at 0:22 | history | answered | glen_geek | CC BY-SA 4.0 |