Re: Samsung UA46B7100WFXXY
Ive stripped the Tv down to expose all tabs now....I have been over each tab, manipulating it...rubbing joins with a chiseled chop stick whilst set is on...
I can not bring on any change, should I be able to?
I hope you don't feel I am wasting your time here..I currently have some time to waist so i dont mind playing around with it trying what i can....
Aussie
Member
Last Activity: 08-28-2014, 07:13 PM
Joined: 08-25-2014
Location: Melbourne
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Re: Samsung UA46B7100WFXXY
I figured I may have a fault from this tv being stored resulting in poor conduction as well as original fault....What is a BGA? excuse my ignorance, but i don't understand why i can run the panel with a varied outcome over extended periods...it does not make sense to me...electronics are either faulty, or not....Leave a comment:
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Re: Samsung UA46B7100WFXXY
Ok Tom, although I am accepting the possibility that I have a bad panel here, I am also sceptical due to the intermediate problems I am having here...Ive now gone and switched it on and its come back to a full picture...not perfect no...but not green
This make me wonder if there is a bad IC somewhere....I have done somersault's with this thing today...and everything i do seems to make it do something different...
In a perfect world i could just swap a few boards in and out, but are there some tests i can do on these circuits'...Leave a comment:
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Re: Samsung UA46B7100WFXXY
I reset all ribbon to T board and got picture back...hoping to possibly improve again I reset them again, and now back to green screen....
Its a bit of a head ache handling a 46 inch tv.....
I would be very grateful if someone could be of more help...Leave a comment:
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Re: Samsung UA46B7100WFXXY
G'day Tom, Do you mind if I ask what is "this" problem?...Leave a comment:
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Re: Samsung UA46B7100WFXXY
Thanks for the link there, that was helpful...I will look at that next...
As far as ordering any new boards, I will not be doing that unless I am certain I have located the problem, I normally repair audio circuit's. I've not done much TV or surface mounted board work though and I am still a learner....
Currently back to Green screen!...Leave a comment:
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Re: Samsung UA46B7100WFXXY
This is how good the picture was before i took it into the house.....it was clear like that for a good ten minutes...still very fine horizontal lines though....if you stand back its not obvious.......Leave a comment:
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Re: Samsung UA46B7100WFXXY
If this has been heavily discussed on this forum before and I am trying to flog a dead horse here, would you mind linking me to the thread?...Leave a comment:
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Re: Samsung UA46B7100WFXXY
Although there is information on the Power supply board regarding voltages, I am unsure what to match to the rails leaving that board....
I did however note several at 5.2v, couple at 12v BUT, one at 2.2 v...this seemed odd to me?Leave a comment:
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Re: Samsung UA46B7100WFXXY
just some more info, after again removing power supply board and rechecking caps, resistor values and diodes I then re installed....
after reinstalling the green screen returned again. i shifted it off the bench to do something else at that point.
when i set up again i didn't realize at first i had placed set upside down....I didn't bother flipping as i only intended to test voltages...But it came back to a picture again.
I then unplugged again and flipped the right way up, when i turned it on i had the clearest picture ive...Leave a comment:
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Re: Samsung UA46B7100WFXXY
Could you explain what you are talking about here? or possibly direct me to another thread on this topic?...Leave a comment:
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Re: Samsung UA46B7100WFXXY
Hmm ok, well I hope its not the screen...I would still like to be sure though before I discard it.....
So this morning I powered unit up again via power board switch and the green screen returned....powered off again and re checked ribbon, then back on via power board...still green, I then turned it off and back on again via power button and got picture back....still with other issues shown....
I have now been over boards with electronic freeze spray with no changes....is there a service manual for this this so I can check voltages?...Leave a comment:
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Re: Samsung UA46B7100WFXXY
If that is the case, would the same problem not present its self all the time ? picture gets worse about a minute after powered onLeave a comment:
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Re: Samsung UA46B7100WFXXY
No clues ?Leave a comment:
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Re: Samsung UA46B7100WFXXY
I know the power board is loaded with cheap caps and I would like to replace these., although they all test ok.....But I am hesitant to move forward at this stage until I have more information regarding this model....Leave a comment:
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Re: Samsung UA46B7100WFXXY
Here are some Pictures of screen and boards for reference......Leave a comment:
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Samsung UA46B7100WFXXY
Hello everyone, I know this is only my second post but I do intend to spend some time on this forum and hopefully add as much information that I can..
I like to repair audio equipment normally but would like to learn more about TV repair.
In my travels today I picked up one of these TV's....
So far...Green screen, I cleaned ribbon cables and now have picture.
I now have horizontal white stripes across full screen, kind of like looking through lines..
So I re cleaned ribbon connections and seems the lines are a little tighter...
still not the problem...so...Last edited by Aussie; 08-25-2014, 04:07 AM. -
Re: New Members - please post your introductions here
Hello everyone, I am pretty new with electronics. Have been studying for a bit over a year now...I would like to improve my trouble shooting skills. Hopefully you guys can help me!Leave a comment:
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