habznation
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Mar 10, 2017, 8:50 PM
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Sanyo FVD48P4 - Decaying LED driver voltage, No Backlight, Flashes Once
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I have a Sanyo FVD48P4 with good audio and an LED backlight that just flashes once.
*** LED driver voltage with and without load starts at ~60v and decays to 0.***
I checked each indiviudal LED with 3.3v and found 5 open or shorted LED's.
I got 3 replacement zener diodes from a TV repairshop, and replaced 3 bad LED's. I replaced the other two bad LED's with 5mm 35000mcd LED's I had from eBay as a trial, because i had no other zeners.
The TV shop checked all capacitors and verified good capacitance.
Same issue
I have looked everywhere on the All-in-one motherboard for any type of LED inverter fuse of any type and cannot see one......I have looked hard online for a service manual for this board, with no luck.....
Any help anyone could provide be greatly appreciated......
Thank You!!
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