hi guys i have a chance to get a 55 in. LG LED 3D Smart TV for really cheap the tv powers on but no picture and it does have backlights.. im thinkin main board but cant find any available and do not see a tcon listed for it.. anyone familiar with these? and should i buy it?
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Re: possible buy LG 55LX9500
here are the ad pics and what they say about it
Im gonna say Broken TV .. .. it turns on its just nothing show .... chip on bottom left and top right
take it to a TV specialist to fix it or get lucky and make it work like i couldnt.Attached FilesLast edited by whatusername; 08-06-2015, 11:11 PM. -
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Re: possible buy LG 55LX9500
Anyone? well anyway i decided to buy it it was only $40 so worth the chance. i have not opened it yet but will post pics when i do tonight.. hopefully i can find a fsm or at least some kind of trouble shooting guide for this oneComment
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Re: possible buy LG 55LX9500
Woah i never seen anything like this.. They didnt skip a beat with this tv..
ok so this is what i have so far.. when i opened it i noticed main board ribbon cable to tcon was disconnected. i had backlights and static hiss from speakers.. when i re connected the cable to main board i no longer had back lights or static hiss.. but it did go through the power on cycle ... bad main board?Attached FilesLast edited by whatusername; 08-07-2015, 10:59 PM.Comment
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Re: possible buy LG 55LX9500
Usually a bad sign when you open up a panel that a seller says "oh I never did anything with it ect" to find out stuff has been tampered with internally.
Could be mainboard or t-con, someone one has obviously been inside if the LVDS cable was disconnected.
I would reconnect it all and disconnected each side of the t-con and power it up and see if you get half screen.
Good luck!Comment
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Re: possible buy LG 55LX9500
im thinking possible main board? the big heat sink in the middle of it gets hot to the touch with lvds disconnected.. if so no one has this board so i will need to try to do a repair on the component level. But i will need lots of help diagnosing the failed partsAttached FilesLast edited by whatusername; 08-08-2015, 12:34 AM.Comment
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Re: possible buy LG 55LX9500
When the TV is powered up and the LVDS is not connected have you hooked a source up to see if you get audio output?Comment
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Re: possible buy LG 55LX9500
no but as stated i do get the static white noise sound and it does go up and down with volume biuttons with lvds disconnectedComment
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Re: possible buy LG 55LX9500
i went back to check on it and it was on with backlights while everything hooked up xcept left ribbon cable for screen to tcon but still no half screen.. i reconnected everything again and will wait to see if it does it again
Edit: yes backlight do come on with everything connected. still no picture and sound and it takes like 5 min for them to come on
and how can i connect to see if audio works if i dont know what source input its on?Last edited by whatusername; 08-08-2015, 01:21 AM.Comment
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Re: possible buy LG 55LX9500
Do you have something that you can connect to the coaxial input? Sounds like your mainboard is working if you can attenuate the volume of the no signal pink noise.
Did you check continuity of the fuse on the t-con?Comment
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Re: possible buy LG 55LX9500
after leaving it on for a while with everything connected the pink noise sound came on but does not respond to volume buttons.. if i disconnect the lvds then it will respond to them.. and no i dont have coax to hook up im trying hdmi from tablet but no luck altho the tablet sound dissapears when i hook the hdmi to main board so its recognizing the hdmi has been plugged inComment
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Re: possible buy LG 55LX9500
i think i found something here i used my cell on zoom and believe this is the fuse but look at components above itAttached FilesComment
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Re: possible buy LG 55LX9500
jesus im just guessing in the dark here... anyone have a schematic or know where i can get one or the fsm for this tv? LG 55LX9500-UA
i used my microscope to look at the above tcon board and that does not seem like the fuse and those components look ok with microscope.. i thought that middle resistor was burnt but guess notComment
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Re: possible buy LG 55LX9500
found this website http://servicemanuals.pro/serviceman.../download.html $5 for service manual
is this legit? or a scam site?Comment
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Re: possible buy LG 55LX9500
i found a free fsm for the 55lx9500-TA instead if the Ua model it looks the same so i assume testing would be the same..
i found the 24pin cable to main and with the manual got the pin out and measured voltages.. readings are as followed
tested / tested
pin: 1 = power on tested3.2v / Pin: 2= 24v tested 24.5
3 =24v tested 24.5 / 4= 24v tested 24.5
5= gnd tested 0v / 6= gnd tested 0v
7= gnd tested 0v / 8= gnd tested 0v
9= 3.5v tested 3.3v / 10= 3.5v tested 3.3v
11= 3.5v tested 3.3v / 12= 3.5v tested 3.3v
13= gnd tested 0v / 14= gnd tested0v
15= gnd tested 0v / 16= nc tested 0v
17= 12v tested 12.2v / 18= inv.on 0v initially 15 min later when Bl turn on 3.0v
19= 12v tested 12.2v / 20=Le:nc Iop:Pwm Dim #1 tested 3.3v
21= 12v tested 12.2v / 22= Le:Pwm Dimm#1 Iop:nc tested 0v
23= nc / 24= Err Out tested 0vAttached FilesLast edited by whatusername; 08-08-2015, 04:21 PM.Comment
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Re: possible buy LG 55LX9500
bumpComment
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Re: possible buy LG 55LX9500
Bump im guessing not many people on here are familiar with these TV's?Comment
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Hellow guys,
I have an Hp 15 i5 10210u with heat issues even after a complete cleanup on its collling assy. So i dont know of there isn any chance to undervolt ( and how )it in order to drop down its temp.
Thank you for your time. -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
i got myself a complete Antminer T17+ with 3 dead hasboards for a very good price.... for parts i bought S17PRO boards.... i replaced all missing resistors and changed some asics because they were bad... but wihout a tester... i used the miner instead and changed firmware to awesome miner firmware for better and faster diagnoses via miner log and lower fan speed...
for my understanding and what i read on the internet these asics should be interchangeable in one chain but in my case i´m getting no more communication to none of the asics on all 3 boards. 2 of the boards weren´t in... -
Hi guys,
I have this 2011 MBP - the company I was working for, bought it at the time for a project and gave it to me after that. Later on, I gave it to my daughter which used it for normal internet browsing and office apps. At some point the, now famous, AMD GPU issue hit this laptop as well. I disabled the use of the AMD GPU following some information I found at the time (the one that, at the end, one moved AMD kext drivers to a backup location). So the laptop was using the CPU graphics and it was ok for the said daily usage. I even replaced the drive with an SSD one and it was operating... -
I found this splitter cable a while back, just got a chance to look at it now, and wondering what it might have been used for. Had a bit of trouble finding out initially what it was, main block that looks like a male DVI connector, split to 2 female VGA connectors.
The main block that looks like a DVI connector is actually a VESA EVC male connector, best concise info here:
http://www.interfacebus.com/Design_E...or_Pinout.html
Pin 13 on the EVC connector is missing, so maybe removed for keying to some particular graphics card?
Never came...03-26-2024, 06:26 AM
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