Forum: Troubleshooting TVs and Video Sources
Today, 01:30 AM
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Replies: 8
Views: 268
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Forum: Troubleshooting TVs and Video Sources
Today, 01:24 AM
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Replies: 22
Views: 794
Re: No power on Vizio D32F-E1 TV
Please attach good clear pictures of the whole backside of the TV showing all the boards, and good clear straight shot of the whole power supply board so we can see what we are dealing with.
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Forum: General Electronics Technical Discussion
Yesterday, 12:02 AM
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Replies: 12
Views: 1,418
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Forum: Troubleshooting Computer Displays
02-25-2021, 10:54 PM
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Replies: 15
Views: 2,022
Re: Need help hooking up LED back light strips.
Did you get any paper works that come with the LED driver board and the LED strip?
That LED driver board (constant current power supply) has the boost converter circuit that boost the 12VDC input to...
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Forum: General Electronics Technical Discussion
02-23-2021, 05:01 PM
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Replies: 7
Views: 298
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Forum: Troubleshooting TVs and Video Sources
02-21-2021, 02:45 PM
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Replies: 28
Views: 610
Re: sony kdl 40x 3500 no backlights
The 6.8 Ohm across the relay contact is for limiting inrush current when power is applies to the circuit, the relay is closed to bypass the resistor when TV is turned on.
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Forum: Troubleshooting TVs and Video Sources
02-20-2021, 09:43 PM
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Replies: 14
Views: 442
Re: Samsung UN55JU7500F
1) So if you run the power supply board by itself, does the PFC Boosted Voltage stay at 390VDC?
2) If all boards are connected. When TV is turned on, does the PSON stay at 4.5V or it jumps up and...
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Forum: Troubleshooting TVs and Video Sources
02-20-2021, 09:39 PM
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Replies: 17
Views: 363
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Forum: Troubleshooting TVs and Video Sources
02-20-2021, 02:09 PM
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Replies: 18
Views: 385
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Forum: Troubleshooting TVs and Video Sources
02-17-2021, 09:02 PM
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Replies: 42
Views: 552
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Forum: Troubleshooting TVs and Video Sources
02-15-2021, 06:47 PM
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Replies: 28
Views: 488
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Forum: Troubleshooting TVs and Video Sources
02-15-2021, 05:39 PM
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Replies: 28
Views: 488
Re: Samsung UN40NU7100FXZA....MELTDOWN!
3 years warrant on Parts & Labor?
If not they can charge you big labor that can be more than what the product is worth.
I doubt that they will stock new replacement LCD panel for 3 years.
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Forum: Troubleshooting TVs and Video Sources
02-15-2021, 05:21 PM
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Replies: 28
Views: 488
Re: Samsung UN40NU7100FXZA....MELTDOWN!
It means you can buy crap with longer warranty, instead of making good products so you know you do not have to worry about repairing them for a long time if you make it right in the first place....
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Forum: Troubleshooting Game Consoles & Other Weird Devices
02-15-2021, 04:59 AM
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Replies: 16
Views: 602
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Forum: Troubleshooting TVs and Video Sources
02-15-2021, 12:41 AM
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Replies: 28
Views: 488
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Forum: Troubleshooting TVs and Video Sources
02-15-2021, 12:37 AM
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Replies: 7
Views: 190
Re: Sharp LC-65N7004U LED type
At what current did you drive the LED at to get the Vf of 3.3V?
Vf of LED will vary with drive current. Your LED is probably single LED.
Here is example of LG INNOTEK dual LED, Vf of 6.3V is...
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Forum: Troubleshooting TVs and Video Sources
02-11-2021, 04:49 PM
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Replies: 32
Views: 1,020
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Forum: General Electronics Technical Discussion
02-10-2021, 02:31 PM
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Replies: 9
Views: 459
Re: Magneto-resistor Digital Output Potentiometer
I look at the schematic, the input of the circuit is for interfacing with the analog output of the sensor.
What is wrong with the old sensor?
Do you have high res or PDF of the schematic?
What is...
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Forum: Troubleshooting TVs and Video Sources
02-10-2021, 02:08 PM
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Replies: 34
Views: 661
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Forum: Troubleshooting TVs and Video Sources
02-09-2021, 01:23 PM
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Replies: 19
Views: 4,077
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Forum: Troubleshooting TVs and Video Sources
02-09-2021, 12:56 PM
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Replies: 6
Views: 188
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Forum: Troubleshooting TVs and Video Sources
02-09-2021, 12:26 PM
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Replies: 6
Views: 188
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Forum: Troubleshooting TVs and Video Sources
02-08-2021, 10:16 PM
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Replies: 19
Views: 405
Re: Toshiba 58L1350UC LED Flicker
https://www.badcaps.net/forum/attachment.php?attachmentid=229718&d=1612741555
The two squares you see in the picture of your LED are the LED dies and they are connected in series with bonding wires...
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Forum: Troubleshooting TVs and Video Sources
02-08-2021, 05:48 PM
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Replies: 3
Views: 137
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