E390vl help with regulator testing

[budm]

Re: E390vl help with regulator testing

"But a short on my multimeter would be a lot of resistance correct" I do not understand the term 'short on my multimeter'.
The MLCC will look something like CP16, CP18, they are light brown in color.

[mmartell]

Re: E390vl help with regulator testing

A short circuit would register on your multimeter as a LOW resistance. You can of course mimic that by touching the probes together creating a "short".

[audiofreak19]

Re: E390vl help with regulator testing

Ok I understand now. Thanks martell. And there is a MLCC cap right next to the ferrite bead I removed its labeled cp49. As you can see in the pict. And cp18 is for the input I think.

[audiofreak19]

Re: E390vl help with regulator testing

Here's the pict of the setup before I removed the regulator and the ferrite bead next to the big tab.

[budm]

Re: E390vl help with regulator testing

Try removing that CP49. Locating shorted out components is not easy since the connections can fan out to many directions for the circuits that are running off from the output of that regulator. SCH and PCB layout info will help.

[audiofreak19]

Re: E390vl help with regulator testing

Ok I will try it.

[audiofreak19]

Re: E390vl help with regulator testing

My sincere apology for not finishing my thread out but I ended up buying a main board off ebay since it was only 26 bucks. And that solved the problem. I'm pretty sure the issue with my old board was the processor.

[cuestaj1707]

Re: E390vl help with regulator testing

Hi guys Im working on one of this sets and the original fail was only vizio logo when power on i replaced the main board two times and now whit bouth new boards the picture come on but upside down including menu that never happen before to me any of you have an idea about this thanks