Re: Replacing a bad cap on TV
Ok fixed the new problem, there is a small screw on that tab panel that controls the gamma (i think) and i turned it slightly clockwise when i first discovered it hoping it would fix the screen fade but its actually given me that screen flicker, so ive turned it back to how it was and now im getting a good picture again.
so all fixed then, lesson learned there, just strip it down and rebuild it and hope it works is the answer lol
justjoe
Member
Last Activity: 06-23-2013, 08:42 PM
Joined: 05-07-2013
Location: Manchester
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Re: Replacing a bad cap on TV
Well since I took those pics of the tabs its been working again, but the pressure on that panel doesn't seem to make any difference to the picture on mine, i cant reproduce the fade out and cant get rid of this flickering, its not usable cos its too distracting even though its very slight....Leave a comment:
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Re: Replacing a bad cap on TV
Yea thats what ive done but im going to be playing with it more yet to cure this new dark band problem, the fact i got rid of it shows both problems ive had is down to bad connection/contact. Gonna brainstorm it and see if I can spot a design flaw or something, but im happy to fix the main problem....Leave a comment:
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Re: Replacing a bad cap on TV
Well hopefully this is my last post on this, it seems like playing around with the ribbon you spoke about has fixed it, im getting a slight screen flash though, its like when you videotape a computer monitor and on playback you get those dark bands flashing because the frame rates are different, well its like that but very slight, but it only does it when the TV has been screwed back together, so theres clearly some kind of ill fitting part, even though everything is exactly the same, screws all the same torque, no bent plastic or metal anywhere, no...Leave a comment:
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Re: Replacing a bad cap on TV
Ok heres the video of it working, not much help i know but proves im not imagining things lol
In the video I turned the brightness and contrast up in the hope it would overload whatever is faulty, just a noob test.
[url]http://www.youtube.com/watch?v=BbLmd9ePBBE&feature=youtu.be[/url]
ive been playing a movie via USB drive for past 10 minutes and so far its working ok so far, i guess when i screw it back together it will go faulty again.Re: Replacing a bad cap on TV<br /> ...of it working,Last edited by justjoe; 05-11-2013, 09:47 AM.Leave a comment:
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Re: Replacing a bad cap on TV
You are not gonna believe this but the TV is now working ok, i turned it on to try to capture more footage of it fading but its working ok, im sure this wont last though.
edit: this is so annoying, it obviously isnt fixed but seems to be working ok.
since it didnt work yesterday i haven't touched it, only pulled the plug out, so it cant be a loose connection.
im going to post a video showing the tv now working, at least then you can see it does work at times....Last edited by justjoe; 05-11-2013, 08:51 AM.Leave a comment:
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Re: Replacing a bad cap on TV
of course yea i forgot about that, i heard that somewhere, thanks, i just hope its not the screen....Leave a comment:
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Re: Replacing a bad cap on TV
I'll look into it thanks. Im thinking the problem is somewhere between the cable to th e screen form the mobo or something on the mobo itself, worth replacing the mobo if i find one, i saw a power supply board for only £25 on ebay, but out of interest id love to know what the problem is on the board....Leave a comment:
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Re: Replacing a bad cap on TV
I can get sound but no picture, before i get to the channel any kind of picture has come and gone already, unless i unplug it for a week.
Also its not freezing the video, i remember that i was able to scroll the menu while it was fading away.
yes backlight is very bright but you cant see it in the video....Leave a comment:
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Re: Replacing a bad cap on TV
Heres the video, you dont see much but the word "scart" appears in the bottom left corner.
If I had left it unplugged for another 12 hours or more the picture would have stayed on for a few seconds longer, in fact if i unplug it for 1 week the picture is ok for about 30 seconds then it fades away.
[url]http://www.youtube.com/watch?v=sv-R_UkoNAI&feature=youtu.be[/url]
My noob guess is that it seems like something is overheating, or a cap is bad but it will run for a few seconds when very co...Last edited by justjoe; 05-10-2013, 09:28 AM.Leave a comment:
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Re: Replacing a bad cap on TV
you're right i see the metal surround has bulges where the pads go now.
ive just managed to get a video recording of the problem, i will update this post with it soon....Leave a comment:
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Re: Replacing a bad cap on TV
just noticed that this screen panel board seem to be missing some of those spongy pressure pads, the pic shows where 1 is missing, and each end of the board has no pressure pads but has similar gold paint as if they should have some.
These pads have not fallen off and been lost by me, i just know that they are either missing from the factory or its designed this way so i could try making my own pad for it.
[ATTACH]63562[/ATTACH]
[ATTACH]63563[/ATTACH]IRe: Replacing a bad cap on TV
just noticed that...Leave a comment:
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Re: Replacing a bad cap on TV
ok i will leave it off for a couple of days and see if i can get a picture again, thanks Tom....Leave a comment:
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Re: Replacing a bad cap on TV
well ive tried doing what he did and those ribbons seem to be ok, i dont get anything happening to the screen when i touch them....Leave a comment:
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Re: Replacing a bad cap on TV
yes the glow is very bright, the screen isnt actually black its blue from the brightness of the backlight....Leave a comment:
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Re: Replacing a bad cap on TV
This is exactly the same problem i have.
[url]http://www.youtube.com/watch?v=VuKIo_m2n9I[/url]
I had this problem with an old pc monitor, i removed the back and pressed down on the components and unplugged things and replaced them and it worked so i was hoping this might be the same.Re: Replacing a bad cap on TV<br /> ...tor, i removed...Leave a comment:
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Re: Replacing a bad cap on TV
I thought of that but the only time i get any kind of picture is when i leave it unplugged for days, but even then its mostly just a black screen, but with working backlight.
when you say panel do you mean expensive? lol...Leave a comment:
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Re: Replacing a bad cap on TV
ok its reading 12.84v both connected and disconnected.
Do you think this is looking like a new mobo replacement? because its hard to find one and i guess they are expensive....Leave a comment:
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Re: Replacing a bad cap on TV
Yes they were connected and tv powered up.
Heres the pic...
[ATTACH]63530[/ATTACH]...Leave a comment:
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Re: Replacing a bad cap on TV
ok heres the voltages...
[ATTACH]63525[/ATTACH]...Leave a comment:
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