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585/Repairs: Difference between revisions
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:--[[User:Peter|Peter]] ([[User talk:Peter|talk]]) 02:45, 4 May 2019 (PDT) | :--[[User:Peter|Peter]] ([[User talk:Peter|talk]]) 02:45, 4 May 2019 (PDT) | ||
== | ==Wavy trace == | ||
:'''Symptom:''' | :'''Symptom:''' Wavy trace | ||
:'''Root cause:''' C786 (100µF 25V) has high internal resistor (ESR ~ 20 ohms). | :'''Root cause:''' C786 (100µF 25V) has high internal resistor (ESR ~ 20 ohms). +12.6 v regulator ciruit is oscillating | ||
:'''Solution:''' Replacing of electrolytic capacitor C786 with new part. | :'''Solution:''' Replacing of electrolytic capacitor C786 with new part. | ||