Re: LG 55LS4500 No Standby light will not power on
budm....set up jumper resistors and the LED backlights come on.
any additional tests?
budm....set up jumper resistors and the LED backlights come on.
any additional tests?
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Re: LG 55LS4500 No Standby light will not power on
I'd replace mainboard.Comment
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Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: LG 55LS4500 No Standby light will not power on
how does one go about sourcing a known good replacement?
shopjimmy does not have one
eBay?
anything else I might want to be aware of?Comment
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Re: LG 55LS4500 No Standby light will not power on
There's some on ebay here, I'm not sure which sticker numbers need to be matched up for compatibility. https://www.ebay.com/sch/i.html?_fro...acat=0&_sop=15Comment
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Re: LG 55LS4500 No Standby light will not power on
okay I don't usually purchase something unless I know what I am buying.
The control board has an orange sticker bottom left, next to mounting screw. It states:
55L84500-UD.AUSWLJR
VER.3.20.12
PM.VER.3.1.2 Y.C hand written 2
How does one go about making sure the control board is a duplicate or a compatible board?
Other places selling a control board for a LG 55LS4500-UD on the internet state:
Part Number: EBT62227807
Identifying Numbers That Appear On This Specific Part: EAX64437505(1.0) / EBR75708201
Works in televisions with SVC code: 55LS4500-UD.AUSWLUR
One other thing, the control board main IC had two dobs of clear translucent silicone securing the black heatsink. Some boards on Ebay have white dobs of silicone have these been repaired?????Last edited by RFITTS46; 07-10-2019, 07:55 AM.Comment
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Re: LG 55LS4500 No Standby light will not power on
Ok, looks like you need to match your svc code if yours is 55LS4500-UD.AUSWLUR then those boards should work. I did notice that there's an S in the code where yours is an 8, I see the J and U are different too, I don't know what the difference is if there is any?? I know the boards look the same.Last edited by nomoresonys; 07-10-2019, 09:37 AM.Comment
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Re: LG 55LS4500 No Standby light will not power on
The fourth position represents the year of development model and the J is type of digital tuner.Last edited by nomoresonys; 07-10-2019, 09:39 AM.Comment
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Re: LG 55LS4500 No Standby light will not power on
I guess the easiest way is to call or email shopjimmy or another trusted entity and ask them how to match them up.Last edited by nomoresonys; 07-10-2019, 10:10 AM.Comment
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Re: LG 55LS4500 No Standby light will not power on
Yep, contact Shopjimmy.
https://www.shopjimmy.com/catalogsea...?q=LG+55LS4500Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: LG 55LS4500 No Standby light will not power on
Current status purchased a used control board off of Ebay. Will status outcome soon as it gets installed.Comment
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Re: LG 55LS4500 No Standby light will not power on
New used control board installed. up and running.Comment
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Re: LG 55LS4500 No Standby light will not power on
Good to hear, thanks for report.
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Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
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.... -
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
All left and right refers to looking from rear of TV (or looking from front with TV upside down)
- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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TV: Samsung QLED QE65Q7FNAT
PSU: BN4400940A
MB: BN94-12832K
I got the tv in spring 2024. At that time it started, then ran 60 sec and poweroff. Seemed like reboot issue. I didn't have time and room to check it in summer so I plugged it in and now the standby light is on. I press button on remote, standby light goes off and tries to start?. No picture or backlight on LCD. I thought about removing diodes like in this thread: https://www.badcaps.net/forum/troubl...sung-qled-q60r...
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