So I have had this m550nv led tv for a while. I can't figure out what's goin on here. So plug it in vizio logo flashes for a little bit then solid orange. Press power button and tv turns on. The backlight kicks on and stays on. But I get no picture. T con is getting 12v on each side of the fuse and 5v on each side of the fuse. They don't have a service manual for this that I know of. I really need some guidance.
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Re: Vizio m550nv really need some help.
I checked all voltages on power connector on power supply. I'm getting 12v and 5v and 18v where its labeled. One question is what does pwm stand for. Cause I get a reading of 2.958v dc. -
Re: Vizio m550nv really need some help.
PWM will be for backlight.
Have you tried running T-con with only one ribbon at a time?
Tried getting sound by fiddling with buttons?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Vizio m550nv really need some help.
I tried to get sound it only had one button that rotates. No sound. I unplugged one of the ribbons that went to the panel and no change. I'm still wondering if it is the t con though from this. http://www.tomshardware.com/answers/...und-image.html.Comment
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Re: Vizio m550nv really need some help.
Question. On one of the regulators that's on the t con. It's got the one big tab and then a leg on the left labeled adj for adjustment pin and the middle is not connected to the pad and then the right leg is connected to the pad on the pcb. Is normal for the right pad to read 3.28v and the middle pad reads like 1.28v and te adj reads nothing 0v. Those are not exact readings but very close. I can get actual readings later tonight an post a pict of it.Comment
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