Insignia NS L42Q 10A

[alecjahn]

Re: Insignia NS L42Q 10A

I see, budm. Makes sense. Thanks for the info, I didn't think about cross-model board usage with component differences.

tom66, yeah, I wouldn't feel super comfortable trusting a "working pull" like those unless it was dirt cheap.

[tom66]

Re: Insignia NS L42Q 10A

tom66, yeah, I wouldn't feel super comfortable trusting a "working pull" like those unless it was dirt cheap.

Make sure they have a good returns policy. Most boards from broken screen TVs are usually good.

[retiredcaps]

Re: Insignia NS L42Q 10A

With my multimeter at 200 ohms setting, a handful of random MLCCs look to be "shorted".

What is the actual reading? The definition of shorted could mean something different to various people.

The lcd computer monitor I'm using right now had a shorted (1.5 ohm) ceramic cap on the logic board. See

https://www.badcaps.net/forum/showpo...1&postcount=23

[alecjahn]

Re: Insignia NS L42Q 10A

I need to locate my better multimeter, or go borrow one of my father's many. I just don't trust this one I have here.

[alecjahn]

Re: Insignia NS L42Q 10A

New T-CON board arrived while I was on vacation. Check it out!

[budm]

Re: Insignia NS L42Q 10A

Great job and thank you for the feedback.

[alecjahn]

Re: Insignia NS L42Q 10A

I couldn't have done it without all your help. Thanks again!

[MrChazz]

Re: Insignia NS L42Q 10A

Hey this thread was very insightful, I just picked a this model up off of craigslist for FREE and knew I could find something here on badcaps, I'm going to test the fuse and the two caps (are they filter caps?) on the t con, I think the t con in this unit may be newer? i'm not sure, but some of the chips look a bit different, I'll post some picure of it later on.

[MrChazz]

Re: Insignia NS L42Q 10A

the board in my insignia is a v420h1-ch5

[budm]

Re: Insignia NS L42Q 10A

Post the pictures first. Does your TV have the same symptom?

[kevinm34232]

Re: Insignia NS L42Q 10A

Bud regarding your Insignia fix where exactly are you checking for short to ground?? And can board be removed from chassis to do this?

[budm]

Re: Insignia NS L42Q 10A

Are you talking about the T-CON board?

[kevinm34232]

Re: Insignia NS L42Q 10A

Yes. Sometimes I have the time and want to start t/s'ing those..

[budm]

Re: Insignia NS L42Q 10A

Yes, you can look for shorts uisng the Ground plane of the board for the meter probe and just move the red probe around the board start with the caps, especially the MLCC type.

[playab0yyy]

Re: Insignia NS L42Q 10A

"When you say the back light comes on does it stay on so you have a totally white screen?"

Selldoor, I'm waiting for pictures, but I believe I have this model tv that is turning on, but with a very bright white screen. Apparently, you can still see the picture on the tv, but with a very bright white screen and limited color. Any thoughts?

[budm]

Re: Insignia NS L42Q 10A

@playa: It sounds like bad GAMMA Voltage problem on the T-CON board, will need to see the screen shot and the pictures of the T-CON board.
If this is your T-CON board, then more thane likely to have bad GAMMA V ref IC AS15.
http://assets.shopjimmy.com/media/ca...5542t06c07.jpg

[playab0yyy]

Re: Insignia NS L42Q 10A

@budm Thanks! Unfortunately, you lost me on the "more thane likely to have bad GAMMA V ref IC AS15". lol I don't know anything about these things. I'm curious if this problem is a simple fix (ie. maybe just needing to swap a board). Not sure if I'll be able to get access to the board (the tv isn't mine, at least not yet). I should be able to get you a picture of the screen, though. If all I need to do is swap the T-Con board, is that basically just a plug and play (just the 3 ribbons)?

[budm]

Re: Insignia NS L42Q 10A

"If all I need to do is swap the T-Con board, is that basically just a plug and play (just the 3 ribbons)?" Yes.

[playab0yyy]

Re: Insignia NS L42Q 10A

Cool. Thanks for your help. I really appreciate it. I'll still try to get a picture for you. Thanks!!

[playab0yyy]

Re: Insignia NS L42Q 10A

@budm - I tried to upload the video of the white screen in a zip file here, but I didn't have any luck. Not very familiar with this site. Sorry. But I did upload it to my OneDrive. Here's a link to the video... http://1drv.ms/1rZ7eWo