Hi, I need some help with my LG 47LV5500 TV, I'm getting power light on from red to white when power on but screen is black. Thanks
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Re: Lg 47lv5500
get a hairdryer out and heat the large heatsink on the mainboard for 1-2 minutes. if that helps, you have identified the problem. -
Re: Lg 47lv5500
Hi, thank you very much that work.Comment
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Re: Lg 47lv5500
I have one of these coming today with the same problem, gonna be trying this also.Comment
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Re: LG 47LV5500-UA - No Picture, No Sound, Has Backlight
I have an LG 47LV5500-UA with no picture, no sound. Backlight is working.
The three fuses on the the Power Supply Board all have 0.0 Ohms across them so are good.
No burned odor or damaged components are visible on either the Power Supply Board or the Main Board.
I have not removed the cover from or inspected the TCON board.
I found the LG 55LW5600 Training Manual on badcaps.net in this forum entry:
https://www.badcaps.net/forum/showth...light=55lw5600
I used the LG 55LW5600 Training Manual to verify the following:
1. I used Test 1 on page 58 of the Training Manual to verify that 24V, 12V and 56V are present as described in the Test.
2. I used Test 2 on page 59 of the Training Manual to verify that backlight does turn on.
3. I was able to get 56V on caps C256 and C257 on the Power Supply Board as described on page 62 of the Training Manual. However I am not able to generate 63V at these same locations.
4. I am not able to use the Tip (second Tip in the bounding box at the top of the page) on page 63 of the Training Manual to force any of the LED blocks on one at a time by grounding EL test points one at a time through a 220 Ohm resistor. I tried this Tip both with and without the jumpers described in Test 1 (page 58) and Test 2 (page 59) installed.
The set does turn on and off (audible click) using the remote control.
Model number: 47LV5500-UA
Main Board: EAX6333405(0) 10.12.16 B.S.W.
Power Supply Board: TB691621698011485(1.6)
Since I just joined this forum I am restricted from posting photos of the Power Supply Board and the Main Board. Once these restrictions are lifted I will post high-resolution photos.
Thanks for your help.Comment
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Re: Lg 47lv5500
So you have backlights but no plctures on the screen, then you need to find out if you have 12Vdc at both ends of the T-CON fuse with ref. to chassis Gnd.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 47lv5500
Yes, 12 VDC present on both ends of the T-CON board fuse.Comment
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Re: Lg 47lv5500
Here are high-res photos of the Power Supply Board and the Main Board.Attached FilesComment
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These light bars are the nicest LED light bars I have ever seen in there online store
I read the description of these light bars and said yeah right there bright at 9 volts
Let just see if this is the case or not and just how bright is bright because I bought some of there light bars that they said were very bright and were ok but I would not say they were as bright as they claim
But I thought I would give these a try only because they had both light bars on sale as a bundle... -
Hi everyone
Please help me with this laptop
HP Omen 15-dc0003la , MB DAG3DBMB8D0 REV. D
It doesn't turn on, when I connect the charger with battery orange light appears on power jack and without battery white light appear, it is fine I think
But if I press power button, power led flashes white once, only that, not consumes anything power, not start, nothing more.
Bios was programmed with a working version, no changes.
Voltages
+3vS5 = 3v when I connect charger, next goes to 0 (I think is fine)... -
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- ACN (BQACN) 19.6v
- ACP (BQACP) 19.6v
- CMSRC (BQCMSRC) 19.6v
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Hi guys
strange one
I have a dead Sony 55X850D
when plug in, black screen, no front white or red LED, no back light no screen
Voltages I get
3.3v LD/power and main board
reg 12V
reg 19V
3.3v on power on pin
no Tcon on
no tcon 12v
no BL_on
I do get BL_ERR 2.0v
I tried to bypass it by ground it but still get same symptom
I did also found a possible shorted cap on main board as it is showing 10 ohms when measure with meter
or is possible the chip next to... -
Pls I have latitude 3350 laptop and it stop working. I realize that anytime I press the power button it powers on blink 1 white light on and off. I flash bios but the same problem. I realize that the 3.3v that's on the bios chip is not stable. It goes on and off. But when I remove the bios chip from the board power is stable. I have change the bios chip still the same problem. What should I do.
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