Re: Toshiba 42VL863B screen problem
The tabs didn't look too bad after cleaning and removing old solder, the two middle ones were slightly corroded along the bottom edge, mainly the displacement of solder particles made it look quite bad, hopefully this don't rear it's head but i'll keep my old tv just in case but even if it dose i've learned a lot from this one from the components used to the meaning of electrolysis.
Ps i always tell friend now, if they spill anything on an electrical item unplug it, and get it looked at!
Richiiii
Member
Last Activity: 03-22-2019, 06:09 AM
Joined: 03-03-2015
Location: Birmingham
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Re: Toshiba 42VL863B screen problem
So, here's a quick update on this tv! after a lot of searching on google i found that the small chips on the picture are capacitors and go by package size.
So i removed all four of them and three tested bad, i cleaned all of the contacts and tested for shorts, all were ok.
I then matched the bad chips with ones from a doner board, put them on and the tv
came back to life and has been working perfectly for a couple of weeks now.
Thanks again for the help!!
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Re: Toshiba 42VL863B screen problem
Ok thanks, will do tomorrow.
Also a bit of googling on these small chips!Leave a comment:
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Re: Toshiba 42VL863B screen problem
Thanks for the replies all.
I did inspect the ribbon cables with a small microscope and they'r all fine, the only damage is to the four smd's in the picture, the rest of the board is as it should be.
I'll do that with the isopropyl and toothbrush.
I have loads of scrap boards with chips identical in size and colour to those in the pic that i could swap over, just don't know if they are the same as they have no markings or numbers printed on them.Leave a comment:
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Re: Toshiba 42VL863B screen problem
Well tea damage to be precise, i thought i might have to scrap it because the contacts are badly corroded and i don't think there is any chance of swopping the whole board.
Just trying to learn about small smd stuff realy!Leave a comment:
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Toshiba 42VL863B screen problem
Hi, i have a Toshiba 42VL863B,
on first power up all i could get was backlight and sound.
After inspection i found the right hand strip circuit board attached to the lcd screen had water damage so i disconnected it form the tcon and half the screen came to life.
Firstly, i might be being a bit stupid here but what are the strip circuit board's (right hand one pictured) connected to the lcd called?
Secondly, am i right in thinking that the small chips (pictured) are surface mount capacitors as iv never dealt with these before and im not too sure... -
Re: Panasonic TX-32LZD80 backlight no picture (fixed)
I was given one of these tv's with the same problem, just fixed it myself using this thread, fuse cost me £3.47 from ebay, iv now got a fully working 32 inch tv for under a tenner including new remote...... Well chuffed!! Thanks for the great advice all.Leave a comment:
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Re: Wharfedale LTF42K1CB Screen problem
Thanks for the reply (newtothis). I managed to get the front glass panel off the tv, i thought it might be fault with the back light or polarizing film but these seem fine. Its definitely the front glass panel (LCD part), seems like its splitting apart or something.Leave a comment:
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Wharfedale LTF42K1CB Screen problem
Hi, i have a wharfedale LTF42K1CB LCD tv, it's powering up fine after a power board replacement but now i can turn it on i've noticed some strange drip like markings at the top of the screen, thay seem to grow slightly as the tv warms.
After removing the plastic casing from the front i notice there are some tiny squares along the top edge (about six of them) on a copper strip around the screen, the drip markings seem to come from these.
They are almost unnoticeable on light picture, on black they show as white outlines of the drips and on mid green's red's etc they appear dark, i've... -
Re: New Members - please post your introductions here
Hi all, my name is Rich from the midlands "england" im not qualified in electronics but find myself having a passion for this sort of thing. Since I was young I was taking things apart to see how things work, I still do now but but with safety in mind and the ability to put things back together!! Preferably working like it once did.Leave a comment:
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