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1240/Repairs: Difference between revisions
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''See [https://www.wellenkino.de/557/download/file.php?id=3256 Report by Bernd] (German)'' | ''See [https://www.wellenkino.de/557/download/file.php?id=3256 Report by Bernd] (German)'' | ||
Screen V-sync was very unstable. Root cause: C521 was found installed with incorrect polarity, presumably ex factory (original-looking solder joint). | :'''Symptom:''' Screen V-sync was very unstable, adjustment range insufficient. | ||
High leakage current resulted. Fix: Replace C521. | :'''Root cause:''' C521 (1 μF) in phase detector circuit was found installed with incorrect polarity, presumably ex factory (original-looking solder joint). High leakage current resulted. | ||
:'''Fix:''' Replace C521 (install with correct polarity). | |||
==Touchscreen== | ==Touchscreen== | ||