hi I've got a samsung t220hd that works fine for 5-10mins after this it has a few random issues, when on freeview tv the remote stops working other than power button with a long delay to turn off or it will work normal but when I change channel the sound goes or it crashes to a black screen.. Once turned off and back on it will do the same again.. I've replaced most of the psu caps but there is a ic chip that has marks round it on the mainboard like burning but not to sure if it is that part that has failed as I don't have another to test. If left on one tv channel it will be ok all day.
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samsung t220hd issues..
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sanyo plc-xp40 projector fan issue..
Hi all, I think the red or black power cable for the fan touched the yellow signal cable..since then it only puts out 2.8v to the red ports.. the 2 green ports still work fine..
if i run an external 12v to the top port fan it powers on the other fans on the 2 other red ports with no problem.. but when when the power is coming from the blue port it wont power the red ports..
any ideas please??
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4300_zps061fa9c0.jpg.html][/URL]Hi all, I think the red or black power cable for the fan touched...
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Re: 42lg6100 horizontal lines going up and down screen
thanks tom but i think something leaked as when i wiggled the coils it lost picture and comes back.. i think im just going to go with a new mainboard as i've wrecked this one by trying to take the tuner off..also the end pin in the bottom right of that circuit on the black strip is clearly there on the front but on the back its not on the mainboard.. time to hunt down a cheap ld89a board i guess...
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Re: 42lg6100 horizontal lines going up and down screen
i've done abit more checking about on the chips on the av board and found something that looks abit out of the norm... would this cause horizontal lines on all inputs?? thanks in advance.. also any ideas on replacing these coils will be amazing...
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4247_zps443fc160.jpg.html][/URL]Re: 42lg6100 horizontal lines going up and down screen
i've done abit more checking about on the chips on the av board and found something that looks abit
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Re: 42lg6100 horizontal lines going up and down screen
pics of powerboard caps and power board if they help..
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4134_zpsef3fe441.jpg.html][/URL]
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4131_zpsc30a7d8c.jpg.html][/URL]Re: 42lg6100 horizontal lines going up and down screen
pics of powerboard caps and power board if they help..
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4134_zpsef3fe441.jpg.html][/URL]
[URL=http://s1219.
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Re: 42lg6100 horizontal lines going up and down screen
thanks tom, wasnt sure if you wanted main power board or main av board..if its powerboard i'll redo pics...
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4242_zps47c14405.jpg.html][/URL]
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4243_zps2c6fb391.jpg.html][/URL]Re: 42lg6100 horizontal lines going up and down screen
thanks tom, wasnt sure if you wanted main power board or main av board..if its powerboard i'll redo pics...
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4242_zps47c14405.jpg.html][/URL]...
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Re: 42lg6100 horizontal lines going up and down screen
I've tried similar with heatgun but at greater distance as its 320-520c..i was told to try freeze spray but havnt got any yet.. theres a button on the av board (internal switch only) and when the screen doesn't come on and its just the backlight on, i press the button on av board which i guess is an av board reset and that sometimes brings picture on..
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Re: 42lg6100 horizontal lines going up and down screen
thanks vinceroger69.. with the multimeter they all test as still connected.. replaced one cap on av board as it looked bad but didnt solve the lines.. its hard to tell if the smd caps are bad as most of the time they dont blow there tops off.. im not sure if the power supply voltages are correct..
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Re: 42lg6100 horizontal lines going up and down screen
all of these orange bits on power supply have cracks in, not sure if this is normal.. i think they are fuses..
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4228_zpsb518ecc6.jpg.html][/URL]
[URL=http://s1219.photobucket.com/user/cscott0072003/media/IMG_4230_zps00694383.jpg.html][/URL]
these are the results from voltage test on psu with what the power should be on left and what it tested at on right.. thanks for looking, any help appreciated
[URL=http://s1219.p...
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42lg6100 horizontal lines going up and down screen
hi guys, when i turn my tv on i get the backlight come on everytime but it takes a few attempts at turning it on and off to get picture with some horizontal lines.. the lines disappear after 10-20mins at which point it will power on and off with picture everytime..i have visually checked for bad capacitors on power board and av board aswell as checked voltages at the t-con board fuse and all power board outputs..im sure its not a screen problem as the lines move up and down screen and are not stuck in one place like a bad tab on the lcd would show..
i think this is a common problem...
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