Trying to fix this big 60" LCD TV. It won't power on and just blinks blue on the front. No clicking or anything, doesn't turn on at all. Where do I start with this one? Any help is much appreciated.
Attached Files
-
Last edited by kburks1230; 11-07-2014, 06:45 PM. -
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
Power board picAttached FilesLast edited by kburks1230; 11-07-2014, 06:52 PM. -
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
Board 2 picAttached FilesComment
-
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
Board 3 picAttached FilesComment
-
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
https://www.badcaps.net/forum/attach...4&d=1415407912
OK, on the right side of the board, there white connectors with labels next to them, you will have to take the DC voltage readings on each pin when the TV is off and when the TV is on.
Make sure to give us all the information:
I.E.
CN 11111:
PIN 1, PS_ON, TV OFF= XXX V, TV ON = XX V
PIN 2, ????, ??????, ????
Just remember that we do not have the TV in front of us, so you have to give us all the details as if we have the boards in our hands to look at.Last edited by budm; 11-07-2014, 07:53 PM.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
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
The service manual can be found here. You have to give the page a minute to load then a small get manual link will appear.
It sounds as if you have standby voltage and the main board is attempting to turn on the set. It may be erroring out because of trouble with the backlight or power board. Sharp sets seem to predominately have backlight trouble. Do you have sound on any input? Or does the set not boot fully?Last edited by Caleb; 11-07-2014, 07:56 PM.Liberating magic smoke one part at a timeComment
-
ASRock B550 PG Velocita
Ryzen 9 "Vermeer" 5900X
32 GB G.Skill RipJaws V F4-3200C16D-32GVR
Arc A770 16 GB
eVGA Supernova G3 750W
Western Digital Black SN850 1TB NVMe SSD
Alienware AW3423DWF OLED
"¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mà mismo
"There's nothing more unattractive than a chick smoking a cigarette" -Topcat
"Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat
"did I see a chair fly? I think I did! Time for popcorn!" -ratdude747Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
PD (bottom right of power board)
pins 1-10 are 0v
11 - 4.9v
12 - .12v
LB
All 9 pins 0v
L2 & L1
All 4 pins 0v
Those are the 4 white connections from bottom up on the right side of the power board. I can't get the tv to turn on to get ON voltages.Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
PD (bottom right of power board)
pins 1-10 are 0v
11 - 4.9v
12 - .12v
LB
All 9 pins 0v
L2 & L1
All 4 pins 0v
Those are the 4 white connections from bottom up on the right side of the power board. I can't get the tv to turn on to get ON voltages.Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
The logo LED blinks one time slowly then one time quickly.Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
I have an update. I pushed the vol down, input and power, it took 5 seconds and the logo went solid, then after a few seconds the backlights flickered once briefly and the 1-1 blink started again.Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
Any ideas? Should I try to take voltages in the time the TV is trying to power on after pressing the vol- input power buttons?Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
Are the inverters on these PSU boards repairable? Which components typically go bad on the inverter? I've dead it's a common failure on these units.Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
It's usually the LED strip (inside the panel) rather than the driver (inverter) that fails.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
Only possible if you have access to a high-voltage current-limited power supply.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
Ok, Thanks Tom
. Looks like I'll need to check the LED strips. I have the TV on the stand now with the back off. Do I have to completely remove the panel via the backed the TV or do I leave it assembled in the back and go in through the front by removing the trim? Anyone familiar with the steps of disassembly to access the LED strips I don't see it clearly in the service manual. The YouTube video I found starts out with the strips exposed already.
Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
The whole panel comes apart - this means the extremely delicate LCD panel has to be removed too. It is difficult enough to do it on a 40" set. I can't even imagine doing it on a 60" set. Good luck.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: SHARP AQUOS 60" Won't Power On - LC-60LE810UN
Definitely, you need room and a helper.
Try not to touch the inside part of the panel, use gloves. Make sure, when you put it all together, that everything is super clean, because it will show. Even the diffuser sheets and everything has to be without dust particles, or finger marks.Comment
-
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... -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
Hi all,
TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!
I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!
A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
Comment