Question about Mitsubishi Power Adapter for DiamondPoint V50 Monitor
The LCD monitor Mistubishi V91 Does not turn ON I opened up and hooked up with DMM then applied power and the 5V & 17V reaches to 75% and goes to 15% and it repeat consistant, Even I unplug the connector from power supply to control/ processor board. I checked every component in power supply but i found nothing is looks failed maybe component fails under load. Power supply uses FET chopper. Anyone please suggest, Appreciated.
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Posted on Jan 02, 2017
I would suspect a faulty Zener or Diode, transistor, allowing dirty DC or AC ripple, to the Caps.. use a scope and have a look. One must always find the cause of why things fail simply fixing the symptoms simply means it will fault again.
Posted on Feb 06, 2010
Short protection--98% chance one of the two fuses that protect the convergence circuit is blown. Repair requires replace fuse AND CONVERGENCE OUTPUT CHIP/S I Have start to finish instructions for this repair (parts cost under 25 dollars) let me know if you want the instructions and we will get them to you. SD TECH
Posted on Sep 07, 2010
Testimonial: "Very helpful. I was almost sure I had a power supply problem. "
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