7CT1N/Repairs: Difference between revisions
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:--[[User:Peter|Peter]] ([[User talk:Peter|talk]]) 02:03, 4 May 2019 (PDT) | :--[[User:Peter|Peter]] ([[User talk:Peter|talk]]) 02:03, 4 May 2019 (PDT) | ||
===Pushbutton switch repairs=== | |||
* See https://amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/7CT1N_SchalterRep.pdf (in German, with photos) | |||
===Under-rated capacitors=== | |||
C30 and C32 (100 μF, 25 V) are under-rated and therefore have a tendency to leak or short, causing associated resistors R30 and R32 (240 Ω, 0.25 W, 5%) to overheat and fail. C30 and C32 should be replaced with modern equivalents rated above 35 V. | |||
[[Category:Instrument repair reports]] | [[Category:Instrument repair reports]] | ||
Latest revision as of 03:48, 20 November 2024
Steps cannot be adjusted
- Problem: Number of steps could not be adjusted.
- Root cause: resistive element of R100 (steps potentiometer) was cracked into two halves
- Solution: Replace R100
- --Peter (talk) 02:03, 4 May 2019 (PDT)
Pushbutton switch repairs
- See https://amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/7CT1N_SchalterRep.pdf (in German, with photos)
Under-rated capacitors
C30 and C32 (100 μF, 25 V) are under-rated and therefore have a tendency to leak or short, causing associated resistors R30 and R32 (240 Ω, 0.25 W, 5%) to overheat and fail. C30 and C32 should be replaced with modern equivalents rated above 35 V.