hi to all members.after change the blown transistors A1294 and the driver trans 4793 and 1837 i have dc 30v on the repaired chanel when start the amp and drops slow to near zero after 10-15 min.change all the smd resistors before the driver trans was out of specs.and i give 1khz signal but nothing happen on front leds only the sig led is on and goes of when the dc on the output drops.emiter res is all ok checked.where i have to check? any advice it would be very helpful.
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Hello, this is my first post and im just a beginner, so be easy on me guy. thanks
i have a LED chandeilier that switches colors from white to cool white to warm when toggling the switch, it has 24 LED arms, each arm is 30 CM length.
i have no datasheet at all for the LED lights, all i have is its length.
long story short, testing the chandelier on the ground, and it works fine for 1 - 2 - 6 hours, no problem.
as soon as i fix the chandelier to the ceiling and bury the driver inside the hub,... -
Problem
Fixing a dimming zone TV with LEDs not lighting up. Dimming zone circuit introduces added variable to diagnose LED and/or Dimming Zone Driver board? Some 1/2 rows of LEDs appears to be out in active dimming zone off AND some brightness flickering with active dimming zone high while playing changing video
Model & Board Pics
Conflicting Spec
Vizio indicate this TV has 10 dimming zones. However, LED strips and Zoned light driver connector suggest 12
https://www.shopjimmy.com/vizio-gj-2k1... -
Need Audio Driver for Thomson P14C4BK128 (Windows 10/11)
Hi everyone,
I'm looking for help finding the correct audio driver for my Thomson P14C4BK128 laptop.
The sound is not working properly, and I believe the audio driver is missing or not installed correctly.
Here are the details:- Model: Thomson P14C4BK128
- Operating System: Windows 10 64-bit
If anyone has a working link to the driver or knows where I can download it, I'd really appreciate it.
Thanks in advance for your help! -
Hello all am trying to reinstall my AMCAP Microscope on windows 10 but it is not working anymore. But the cam and the drivers are present in the Device Manager but there it saysWindows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39) the drivers is : gl usb2.0 uvc camera device driver and i also get this mesage: Windows found driver software for your device but encountered an error.
but it is quite strange because it did work on this same OS for one week ago and even for sometimes ago on that same but now nix.
any help? -
Hello TV experts! I have a UN55D6900. The successfully TV turns on, and the backlights light up, and I get a picture, but there is a section that is dim. I took it apart and 1 out of 4 segments of backlight LEDs are not lighting on both sides of the TV (in other words, the same segment is out on both LED strips).
I tested the LED strips with my LED tester and all of the LEDs light properly, so I believe the problem is with the PSU/LED driver board (BN44-00428B). The voltages at CNM810 (between PSU and main board) look ok to me. The voltages at CNL801A and CNL801B look off for one...
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