someone gave me an lg lcd tv telling me it works. After i plugged it in, i found the reason it was given away. In the dark areas of the screen, red dots appear randomly like static or snow. Ive researched the issue and found that it is more common on plasma screens. Mostly its an over voltage on one of the boards requiring an adjustment to a pot. Problem is that there are none. I looked over the caps, i see none bulging or leaking. Has anyone seen this? (Man my phone hates this forum)
LG 32LB9D LCD red dot snow issue.
Collapse
X
-
Tags: None
-
Re: LG 32LB9D LCD red dot snow issue.
You could start by trying to reseat the lvds cable on both ends.Did I leave the soldering iron on? -
Comment
-
Re: LG 32LB9D LCD red dot snow issue.
I believe i checked all connections. I will double check. This is my backup game tv, my 55" magnavox is having a convergence issue again after a few years and I dont want to deal with the stk150 again...Comment
-
Re: LG 32LB9D LCD red dot snow issue.
That's an interesting defect. I'm going to say bad lvds cable or tcon issue. I'm sure some of the more experienced guys will chime in.Did I leave the soldering iron on?Comment
-
Re: LG 32LB9D LCD red dot snow issue.
Is this your T-CON board?
http://assets.shopjimmy.com/media/ca...-1279a-top.jpgNever 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: LG 32LB9D LCD red dot snow issue.
Woah. Hang on a sec. There is a loose piece of solder sitting on the right ribbon cable. I dont see where it came from, but it didnt solve the issue.Last edited by weaponepsilon; 12-15-2014, 12:48 PM.Comment
-
Related Topics
Collapse
-
by rouninHi everyone,
I'm working on a MacBook Air 2020 (A2337, board 820-02016) and running into a strange USB-C issue. I've gone through quite a bit of testing and part replacement, but I'm stuck — hoping someone here can shed some light.
🛠 Original Issue
The machine initially wouldn't negotiate 20V over USB-C — stuck at 5V.
Diagnosis showed PP1V5_UPC0_LDO_CORE shorted to ground.
I replaced U3100 (UF400) using a donor board (A2179), and the machine powers on fine now.
⚠️ New Problem: One USB-C Port Only Works in One Orientation... -
by ugamazingI have three identical-spec 820-01700 boards (2.6/32/512), and ALL THREE boards came to us with the same fault, from different sources: The boards don't wake from hibernation with the keyboard or lid, they ONLY wake when you press the power button. I understand this is a very minor issue, but the boards must be fixed!
We will of course begin with the obvious (checking lid signals), but I couldn't help but notice these three boards were all 32GB variants. Has anyone noticed an issue relating to these 32GB boards in particular? I of course don't think it's a RAM issue, but it's bizarre... -
by elmarkHP Pavilion 15-CW1002UA
S/N 5CD0251CBC
P/N 7KE54EA
Hello guys!
I have a strange issue with my laptop keyboard and I'm lost trying to detect what's wrong - the KB9028Q-C or the keyboard itself.
It powers on OK and has no other issues except the following:- CAPS LOCK does not work at all
- Fn button toggles Flight Mode
- When I press 't' or '5', it produces 't5', and when I press 'y' or '6', it produces 'y6'
- (with SHIFT pressed: 't%' and 'y^' respectively)
but when I press and hold...06-27-2025, 01:10 AM -
Hello everyone,
I'm experiencing an issue with my Alienware 15 R2 (Service Tag: DL7NN32). The laptop works perfectly when connected to the AC adapter — it powers on and functions normally. However, the battery does not charge. If I disconnect the DC adapter, the laptop shuts down immediately, as the battery is at 0%. I have replaced the battery with a new compatible one, but the issue persists. I also replaced the AC adapter with a compatible one, but the battery still doesn't charge.
To assist with troubleshooting, I'm attaching two power circuit schematics:- Power
-
by wizard13Hello everyone,
I am experiencing a BIOS-related issue with my Dynabook Satellite Pro C50D-B-100. When I power on the laptop, the screen stays black, and there is no response from the system. I suspect a corrupted BIOS.
I have checked the forum and the available documentation but could not find a solution specific to my issue.- Brand & Model: Dynabook Satellite Pro C50D-B-100
- Part Number (P/N): PYU13E-00C00PFR
- Serial Number (S/N): 22028896H
- System Configuration (SC): A1PYU13E1127
- Motherboard Model: IP3_ACN16_MB_V21_20211222A
- Power Input: DC 19V –
-
Channel: BIOS Requests ONLY!
- Loading...
- No more items.
Comment