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465/Repairs: Difference between revisions
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Quick way to troubleshoot is, after powering off - and ensuring all capacitors are discharged - check resistance to ground on each power supply rail and identify the shorted power rail. | Quick way to troubleshoot is, after powering off - and ensuring all capacitors are discharged - check resistance to ground on each power supply rail and identify the shorted power rail. | ||
Then trace the offending tantalum capacitor in the shorted rail with the help of schematic. This could in | Then trace the offending tantalum capacitor in the shorted rail with the help of schematic. This could be in any board/sub assembly, not necessary in the power supply or A9 board. | ||
You can replace tantalum caps with general electrolytic. Remember to ensure you install them in the correct polarity, specially on the negative rails. | You can replace tantalum caps with general electrolytic. Remember to ensure you install them in the correct polarity, specially on the negative rails. | ||