Service manuals, schematics, eproms for electrical technicians

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TV - EPROM
Type: (RAR)
Size
546.0byte
Page
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Category
TV
EPROM
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Relevant TV forum topics:
LG OLED55C9PLA TV does not start :(
Hello guys,

I have a LG TV OLED55C9PLA which does not start at all. Unsure
The only sign that is alive is some vertical colored lines on the right side of the screen that are appeared at the beginning and that's it. After that black screen.

I have uploaded a short video (more than 3Mb) to understand better what I mean.
https://www.dropbox.com/scl/fi/k41dudzh2jk44mcl98n3c/20241117_200414.mp4?rlkey=jkjrwo8qpwj1uhumeqcp2viko&st=dzfo6nnx&dl=0

If you have any experience from such problem please help me to fix it.

Thanks in advance.
Theo
EMERSON LC320EM3F WON'T START: SOLVED
:taps2: This is a LCD TV brand EMERSON, model LC320EM3F and is completely death. At first revision, we detected some bad components in the switching power source: Switching MOSFET K10A50D, RESISTOR 0.19 Ohm, 2W, transistor switching controler 2SC5344, Zener Diode 1ZB36 (36V) and the 4A fuse. I had the SM of LC320EM9 model, so, the values of the components are different. I replace them all twice and they always broke again! FRUSTRATING! Then I realyze that changin the values nearly to the LC320EM9 model, I would obtain better results (see FILE ATTACHED) I replace the 0.19Ohm resistor by a 0.39Ohm, maximizing the pulse received for the control transistor, for that purpose, also changed the 2.4KOhm resistor for 5.6KOhm. The switching MOSFET used was IRF640 replacing K10A50D, and transistor 2SC5344 was replaced by 2N5551. Finally we add a Zener diode not included in original board (marked with blue circle) limiting the colector voltage and gate voltage to 26V. For short, when we connect the power cord, every thing was fine, except than voltages at secondary of main transformer, was only 3.2V DC in all rectifiers. Found a diode in short-circuit (circled in red), replaced it and BINGO!, the TV return to live again!!!! I Hope it serves as a nice experience for the future.
STARLIGHT 24DM3500 mainboard TP.MS3663S.PA671 ,restart
Hello, this small tv is equipped with mainboard TP.MS3663S.PA671 ,25Q64 flash SPI ,display V236BJ1-P01 Rev. CB When it starts, it restarts, sometimes it doesn't "leave" from st.by, so maybe we can find an update software on usb (or dump for 25Q64). Thank you
Philips 42PFL3605 chassis TMP 4.1 won't start
Philips 42PFL3605/12 won't start. This is TPM4.1 ELA chassis. DC-DC converter U7106 (G973-120) is faulty, Replace with BA033T or similar. Footprint might be different but as long as a 3,3 V low drop stabilizer ic, approx. 1A output capability is used it will work. Pin 3&4 from the U7106 is 3,3V outputpin 5 & 6 is aprox. 5,2 V input. Mind you: The botom of the case of the original U7106 is also soldered to mainboard. U7106 can be found on the right side of the mainboard next to the metal case on the mainboard. To check if this is indeed the problem, measure at pin 3 & 4 for always 3,3V, if defective the voltage will be somewere around 1,2 V . Then the set will not start.
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