Sziasztok !
A tárgybeli gép sormeghajtó jele helyett csak az alábbi remegő 32khz-es jel jön ki a prociból. A készülék egyébként 50 Hz-es. (005kép). Néha próbál szélesedni, formálódni, olyankor már kezd négyszögre hasonlítani és felülről közelít a 15625 Hz-hez, de leginkább ez a rángatózás látható, ami nem elég a meghajtáshoz, folyamatosan leülteti a meghajtó tranyót.
http://elektrotanya.com/hyundai_he-tc2970f_chassis_ph2529pd_ver-1,0_sch.pdf/download.html
A Hout-ra kapcsolódó felhúzóellenállás, a soros 100 ohm , a jelformáló 1nF ok.Tápok rendben megvannak.
Ha a sormeghajtó bázisára külső jelet adok akkor elindul a gép, nagyfesz, képcsőfűtés rendben, van fény.
A sorvégfok rendben megy, így:(006 kép)
A proci TDA 9351PS/N3/3/1997.A kvarc rezeg, SDA,SCL dolgozik, készülék bekapcsol.
Találkozott-e valaki ezzel a jelenséggel?
Üdv.
Sziasztok!
Javított már valaki ilyet? Semmit nem találok róla. Az alaplap CV9202H-T. Ha stby-ról elindítom átvált zöldre a LED és minimális háttérfény dereng, viszont semmi más, kikapcsolni se lehet csak áramtalanítással.
2 stab IC kimenetén 3,3 és 1,6 V-ot mérek.
hi to all guys, this smart tv seems to have hdmi ports out of order, this happened after a storm, where sky and a play station was attached to the doors .. now working .. the tv works properly as a tv, but if i want use it as a smart TV and click on the icon in charge tells me service not available .. before replacing the main I wanted to try to make a hard reset hoping that it is just a matter of corrupt firmwear, ah I also forgot the usb does not let me use them so I do not I can not even do it from the stick .. does anyone know how to do the procedure for a hard reset from tv .. sequence of keys etc etc?
thank you all in advance!
Hello to everyone, I hope someone can help me in English :D
i have a problem with this LCD TV Akai AZ 4280FHDT4 LCD 42" .
It's power supply was fault, and I got it working, but now i have another problem, there is no picture. Actually the screen is fade white-blueish, no picture no OSD, but SOUND is working fine...
I can't find service manual for this TV anywhere... And that is even more difficult because I cant see what is the main processor and the main IC on T-Con Board, because there is a glued cooler over them.
The main board is:20-MT5362--13-OX
The card that controls the LCD screen: SZTHTFTV1607
Power supply: MLT198TL
I suspect the T-CON board, because i get 12V from main board going too it, but there is no supply for main processor on TCON (probably MST6xxx IC), there should be 3.3v to supply it, but there is not... there is i thin a DC to DC convertor that should convert 12 to 3,3 but i cant read any marks from it, so i don\t know what it does exactly.
Here is what the board is, i think, it has its cooler taken off...
http://download.szlva.com/QQ/ep/EP00041200118.pdf
Here are the pictures of the tv set adn individual modules
TV
http://i50.tinypic.com/ifuc6g.jpg
Behind
http://i46.tinypic.com/2csf5mf.jpg
Main Board (20-MT5362--13-OX)
http://i50.tinypic.com/259wsok.jpg
Power supply (MLT198TL)
http://i46.tinypic.com/f2kkkx.jpg
Others
PNEL - T805A
http://i48.tinypic.com/rb9xer.jpg
AV/HDMI/USB modul
http://i45.tinypic.com/eddg1.jpg
SZTHTFTV1607
http://i50.tinypic.com/2m65n2s.jpg
Remote
http://i45.tinypic.com/2e4dlcl.jpg
If anyone knows where can the service manual can be found it would be nice...
I see that many LCD tv's have similar problems, and that the LCD driver is mostly the reason...
Is there any similar manufacturer, that could help too...
Thank you in advance