Re: Samsung PN43D440A5D No backlight/Video
Most psu for plasma tv has its own logic controller on psu board itself, it receives logic hi/lo from main mcu on main board, then outputs logic hi/lo use for switching the Vs,Va and other sub-circuit within the psu board. Now, check the must haves of this logic controller ic (e.g.,, x'tal in/out for osc, reset, Vcc, gnd, input and outputs) or consult datasheet may help.
mytomr
New Member
Last Activity: 08-15-2013, 07:47 PM
Joined: 02-09-2012
Location: NCR
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Re: Sharp Lc37sb24u Power problems
I do panel error reset, it works on sharp i fixed last year....Leave a comment:
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Re: Acer 7736zg No power
What is the function of defective MosFET on the circuit.(series pass or switching for DC-DC), if in series pass config does gate voltage present (usually it came from logic controller e.g. syscon normally hi for on and lo for off), but if use in DC-DC circuit as switching then check the oscillator IC it might be te culprit.. consult datasheet of the ic it may help you.....Leave a comment:
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