Question about Samsung SyncMaster 172N 17" LCD Monitor
Green power light flickers.(60 cyles) ticking noise from powersupply. Disassembeld replace all out put capacitors on switchmode powersupply. did not fix.. disconnected the inverter circuit still ticks. any ideas? this unit uses the "top246y" switching circuit not much there to go wrong xcept a few zeners and 2 caps....
Have you checked the power output from the power board? Is it constant and steady? Try reflowing all the joints if you haven't already. Especially transformer and coil joints. Maybe a bad logic board? Do you have spares to try? Does it do this with everything disconnected from the pwr board (switch, logic, inverter)?
Posted on Jan 03, 2009
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Posted on Jan 02, 2017
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