Service manuals, schematics, eproms for electrical technicians

CK-2902 S51A

TV - EPROM
Type: (E2P)
Size
664.0byte
Page
---
Category
TV
EPROM
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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    CK-2902 CK2902 S51A CK 2902 51
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Relevant TV forum topics:
LG 32LS5600 backlight issue

Hello everyone!

I'm new here and wanted to ask you all if anyone knows why my TV might be losing its backlight.

This is what happens.
I'm watching TV and suddenly it just goes black. If I try to reboot my TV it won't show any backlight, but if I wait a couple of hours, the backlight works, but for a short time (5 to 15 minutes). The longer i leave it off, the longer it works.

Some pictures are attached.

The TV model is a LG 32LS5600.

Samsung ck-703cn, sct12b, nem indul, visít a sortrafó
Üdvözlet! A fent nevezett tv-ben bekapcsoláskor visít a sortrafó, és egy pillanat alatt elkezd melegedni. Ha lekötöm és izzóval terhelem akkor sem indul el, megpróbál bekapcsolni a sárga és piros led is felvillan és a relé is kattan egy pillanatra, és ez ismétlődik sokszor. Én sorkimenőre gyanakszom, bár nem tudom így kapcs. rajz nélkül, hogy kap-e a táp jelet a sorkimenőről. Valahol azt olvastam, hogy el kellene indulnia műterheléssel. Ha valaki találkozott már ilyennel kérem segítsen. Üdv.: Peti
SAMSUNG_CK-20S10BZ_S15A nincs fény, hang, OSD igen (MEGOLDVA)
Sziasztok! Küzdök ezzel a makacs készülékkel de nem tudok rájönni, miért nincs se fénye se hangja. Tápfeszültségek és azokat szűrő kondik rendben vannak, de a +8V tápon csak 7,7V mérhető. Az OSD-je viszont megjeleníthető, és kereső üzemmódban érzékeli az adóállomást, és megáll. A függ. IC tápfeszültségei, és jelalakjai rendben vannak. A "homokvár" jel is előírásszerű. A képcső nyakpanelján mindegyik diódát ellenőriztem ohm mérővel nyitó, és záró irányban. Mit javasoltok, ami segítene kideríteni a hibát? Üdv.: Csabafi54 "FONTOS! Olyan fórum téma nevet válassz, ami beszédes, minél pontosabban illeszkedik arra, amivel kapcsolatban írsz. Egy lehetséges jó elnevezés pl: ORION LCD PT26S chassis 17MB12-2, a tápja nem indul Az nem elég, hogy pl: "LG LCD-TV" vagy "HP laptop" és hasonlóak. Illetve érdektelen, nem releváns információt se tartalmazzon a cím! A helytelenül elnevezett topik felfüggesztésre, majd 48 óra után törlésre kerül! Felfüggesztett állapotban nem tudnak mások addig hozzászólni, amíg ki nem javítod a címet. A hibás cím utólagos javítása (48 órán belül) a "Szerkesztés" fülre kattintva végezhető el."
pins labels of backlight driver IC BD94240235
I got a repair of SONY model KD-43X7500H, made in Malaysia, an Android smart LED Tv. The first time I worked on it, was that, it shows the logo SONY for a minute then the backlight turns off but still, you can see the panel's picture working as you can see it's silhoutte. I  managed to re-soldered the two ICs, which are 'square' type SMD ICs with I think, 10 pins on each sides (total of 40 pins) with label BD9424 0235 for each ICs. As I checked on it. there are two ICs to drive the LEDs in an in-line array arrangement), not the common types of backlights scattered all over at the back of the LED panel. I was successful then but just for a few weeks, the same trouble happened again. As I observed it, before the backlight turns off, there's a bit of a dimmer lighting at the right side of the panel screen. I resoldered it the second time and it worked. Now, the third time as a backjob, the panel screen will show the Sony and android letters logo with 'even' lighting behind the panel screen but then, after a few seconds, the backlight turns on with red light indicator blinking 6 times. I hope someone can show me the pin labels of the driver IC. BD9424 023, so I can study how to make some kind of modification, as I suspect, one of the ICs could possibly, already defective.In advance, thank you very much for those who could help. God bless us all.
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