[time-nuts] Oscilloquartz OSA-4350 GPSDO
Mark Sims
holrum at hotmail.com
Sun Dec 31 19:15:11 UTC 2017
I disassembled the unit and found that +5V is shorted to ground on the top board. No shorted tantalum caps or obvious failed parts. I am beginning to think it may be power/ground planes are shorted on the four layer board (all boards are four layer)... probably wasted $20 on a DC-DC. It's not going to be easy tracking down the short. Maybe apply a high-current 5V supply and see what gets hot.
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> Are you going to swap out the DC-DC module?
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