Re: Samsung UA46C7000 tab bond flex burnt track
Buying the machine wouldn't be practical. Buying a replacement panel would be cheaper but wouldn't that cost something close to the price of a new TV set. For now I'll to wait until I can think of a solution. Maybe look for a similar set with a good screen. Or try soldering a thin wire to bridge the contact to the board.
I have observed that the tracks that were burnt off is the same pin number on the other one. I wonder what signal this is and why it caused the burn.
I'll post again if i can pull this off.....
phantom_zero
Member
Last Activity: 02-19-2021, 08:12 AM
Joined: 03-14-2015
Location: Imus, Cavite
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Samsung UA46C7000 tab bond flex burnt track
I acquired this TV hoping I can still fix the defect. As you can see from the picture
half of the screen has vertical bars. Bases from what I have seen from the forums here and elsewhere on the internet, it is causes by the faulty connection between the LCD and the flex or what is called the TAB BOND. And so I thought that maybe I could fix this one using the methods I read from the forums here which uses thin foam, tape, or thin silicon material in between the flex and frame to improve contact. Unfortunately, upon opening up the TV and inspecting the tabs I found that this TV has... -
Re: Cap Identification
Been a long time since my last post here... The 5 piece series connected 330pF/2kv I used as replacement are still holding out pretty well to this day.
One thing I want to do though is to convert the backlight to LED. Has anyone here already tried that?Last edited by phantom_zero; 01-18-2017, 11:35 PM.Leave a comment:
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Re: Cap Identification
Ok... I had the chance to test the TV out for about a little more than an hour last night then the backlight went off again. So I guess the 33pF/1KV caps I parallel connected can't really handle it. It was a bad idea because I think good engineering practice would be to use a rating that is twice the operating voltage. I'll try replacing them with the series connected 330pF/2kv now but according to some file I read, to ensure that the voltage are distributed equally among the series connected capacitors, one should connect resistors of same value in parallel...Leave a comment:
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Re: Cap Identification
I've been looking for days, very few 6kv capacitors and no 39pf or 33pfLeave a comment:
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Re: Cap Identification
How about this? I connect in series 5 pieces of 330pf 2kv to make 66pf 10kv. Would that work? Will there be a problem with the ESR adding up? Or with the current no longer divided between parallel capacitors?Last edited by phantom_zero; 03-19-2015, 06:15 PM.Leave a comment:
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Re: Cap Identification
Is that so? Then I hope the caps I put will hold out until I find a better replacement. Maybe I should not set the brightness to high. Will that work?Leave a comment:
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Re: Cap Identification
Hi all.. I bought a defective LTV40FHD from a seller. When I opened it, I figured it had the same problem as yours. I saw that there were attemps to repair it and resulted to one of the caps exploding or burnt as there were burn marks on the board. Fortunately no other part is affected. I saw that only the 39pf and 27pf is parallel connected. I couldnt find any 6kv capacitors or 39pf. The 10pf were still fine so i just needed the 39 and 27. In parallel connection, the capacitance is added up, so 39+2=66. I found four 33pf rated at 1kv. I read somewhere that...Leave a comment:
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Re: New Members - please post your introductions here
What happened? I still can't make new threadLeave a comment:
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Re: New Members - please post your introductions here
Hello, I have just started trying to fix gadgets and all electronics devices. What I do is buy defective devices, try to fix them but I don't sell 'em. I keep 'em and try experimenting with them. My very first try repairing was with our old crt tv. It was successful, thanks to google. I have also tried fixing tablets that have boot loops and replaced broken LCD's and touch screen. My most recent is the monitor I am using right now which was flickering at power on and stabilizes after a while. It had 3 bad caps that I replaced...Leave a comment:
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