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17 horizontal lines, disortion and ghosting, then 5 x red dot
Hi all,
My sony bravia ( 4 years old)was giving me picture disortion, ghosting and horizontal lines in the upper side of the screen. I will add a picture of this.
it is a sony bravia kdl40hx850 serie
This is what i did :
i did a self test : was ok.
then i took a look a the main menu : the picture was the same , so lines and disortion trough the menu as well. ( so i asume no BAPS problem? )
i opened the back panel and moved ( gently wiggeld ) the lvds ( lcd ) cable that is connected to the T con board. the screen turned a little pink, but still the same problem.
I checked the golden thin flat cables connecting the lcd panel as well , but nothing changed.
i ckecked all the pcb's for leaking chips or transistors and condensators ( or blown condensaotrs) but no visible damage.
after doing this , i tried the tv to power up. i didn't get picture only 5 times a blinking red dot at the stand by dot ( in the service manual i read that it could be a t con error, lvds cable error or a p_id_err panel: eeprom 12 c nack error ( so a reading error on a chip i asume? ) ( i tried to check the diodes but it didnt work.. no measurement... did i do something wrong? )
than after all this i checked the voltage on the g6 board ( power board or static convertor board) i measure 4.2 variable ( between 3.0 and 4.2) volts dc on the powercable tot the t con board. this has to be 12 v dc.
here stops my knowledge...
is there a solution or does someone knows what caused this problem(s) did i do something wrong? ( diode check.. or ..)
if i take a look to the troubleshooting page in the service manual i see 1 possible problem and this is the lvds cable.. but all the rest have to work than .. ?
the spare parts for this are ridiculous expensive in europe.. i don't know why...
( a t con board about 300 dollar ( 278 euro) and a g6 static convertor ( 190 euro ( about 210 dollar) and the lvds cable 100 dollar..
thanks in advance and sorry for my incorrectly english..
Update (10/16/2016)
those are the pictures of the tv screen. i forgot to add these
Bu iyi bir soru mu?
6 Yorum
also did a hard reset but didn't work..
Kevin D tarafından
@kevind add a coule of images with your question. That would allow us to see what you see. Right now it does sound like a T-Con board error.
oldturkey03 tarafından
ok thanks old turkey, i was hoping you would answer this question .. :) i forgot to add the pictures. i just add them now. i tried to add a movie but it is not possible. thanks in advance
Kevin D tarafından
@kevind disregard the T-con board. This is not related to it. Lets see what we can find
oldturkey03 tarafından
i retested the t con and i have no measurement on the diode ( DC) , if i do the diode test i get measurements.. did i do something wrong? @ old turley do you have some more info? thanks in advance
Kevin D tarafından
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