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81
DVD/VIDEO/Home Cinemas/Hi-Fi/Mp3/Camcorder / Re: panasonic SC-UA3
« Last post by downunder on October 04, 2022,06:25:46  »

Hi Mulja,

That is a problem - burnt out smd resistors. I downloaded the service manual from 2 different sources, but like you found, neither has a schematic of the SMPS module. Can't help I'm afraid. Just hope someone has a module for checking.

Bruce
82
DVD/VIDEO/Home Cinemas/Hi-Fi/Mp3/Camcorder / panasonic SC-UA3
« Last post by mulja on October 03, 2022,14:32:47  »
Hi folks

anybody have schematic of power supply for panasonic SC-UA3

got download one , but no schematic of power supply included

on power supply burned few resistors , cant see value of resistors

R14,R32,R41,R42,R33

maybe somebody have same spare board and can check value for me

i attached few pictures of board

Thanks
83
LCD TV forum / Re: sAMSUNG 32" UE32EH5000K
« Last post by downunder on October 02, 2022,04:44:53  »

240V LED supply is way too high for a 32 inch - the same model in 40 inch only uses 110V and probably has more LEDs in it. The return path for the LED strings (LED - or L-) should read between 2 and 15V approx. wrt chassis ground. If it too reads high then there is no return path for the LEDs on the power board.
Can't say what may be actually faulty. The return path is usually via a chip.                                  Bruce
84
LCD TV forum / sAMSUNG 32" UE32EH5000K
« Last post by J_@_N on October 01, 2022,19:46:37  »
I have 32" UE32EH5000K and I`m in a pickle. I can see the picure with torch against the screen so problem with backlight, OK. I`ve checked power board and there is 240V going to LED strips (tested to ground) so next tested, with 30V battery, each of my 4 LED strips (10 LED each) and all fine. I`ve tryed disconecting the logic board but the back lights stay down. Any ideas?
85
LCD TV forum / Re: PHILIPS 37PF5321/12 LED 2X
« Last post by downunder on September 30, 2022,04:26:33  »
Error code 2: I squared C2 block detected.
86
LCD TV forum / PHILIPS 37PF5321/12 LED 2X
« Last post by jose almeida tavares on September 29, 2022,09:00:03  »
Hell. good mornig. this tv blinking the stby led 2x. i needo you help. thanks.
87
LCD TV forum / toshiba 58UL2B63DB
« Last post by t1412 on September 21, 2022,04:09:48  »
Morning tech, does anyone have a firmware download for the following tv toshiba 58UL2B63DB many thanks

shaun
88
LCD TV forum / Re: oled tvs
« Last post by call me al on September 20, 2022,16:07:16  »
Hi Bruce. Many thanks for all the info,really appreciate your help and the downloads.
89
LCD TV forum / Re: oled tvs
« Last post by downunder on September 17, 2022,02:29:54  »

Hi Al,

I've just uploaded a file to the Downloads section titled LG OLED TESTING. There is no backlighting in OLEDs and the display basically operates solely off 24V
fed to the panel driver board (aka T-Con) from the power supply. These are notorious for display failures which cut off the 24V supply as protection. Good luck.

Bruce
90
LCD TV forum / oled tvs
« Last post by call me al on September 16, 2022,15:11:40  »
Hi all just wondering has anyone had experiance working on lg oled sets,have had a couple with cracked screens and one with no picture .Just dont know where to start with these newbies
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