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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Problem with Crotech 3035 scope
It's very old. Perhaps 20 years and is single beam.
Anyway, sometimes when I turn the timebase, the trace becomes bright, thick and fuzzy, with a width of say 4mm. When the time base is below 100ms/div, it alternates between thickness and thiness. The input signal can still be seen however. If I turn it on after a few weeks, the fuzziness may still be there. But then it may suddenly revert to normal and whan I next power it up, it's still normal. What might be wrong and does anyone have a service manual that came with it but I lost? Regards, Funky |
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Problem with Crotech 3035 scope
"Funky" wrote in message ... It's very old. Perhaps 20 years and is single beam. Anyway, sometimes when I turn the timebase, the trace becomes bright, thick and fuzzy, with a width of say 4mm. When the time base is below 100ms/div, it alternates between thickness and thiness. The input signal can still be seen however. If I turn it on after a few weeks, the fuzziness may still be there. But then it may suddenly revert to normal and whan I next power it up, it's still normal. What might be wrong and does anyone have a service manual that came with it but I lost? Regards, Funky I have a manual for the 3036 maybe a dual version of the 3035 e-mail (removing .....) electronic hints and repair briefs , schematics/manuals list on http://homepages.tcp.co.uk/~diverse Nigel,Diverse Devices,Southampton,England |
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