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Search: Posts Made By: dskall
Forum: Troubleshooting TVs and Video Sources 08-10-2022, 03:10 PM
Replies: 5
Views: 183
Posted By dskall
Re: Black screen LG 43UK6300PLB

Those are the panel boards that distribute the voltages and data out to the panel. Sometimes they are also incorporate the t-con on the panel boards.
Forum: Troubleshooting TVs and Video Sources 08-10-2022, 03:02 PM
Replies: 33
Views: 262
Posted By dskall
Re: Philips TV 40PFL3148H/12 keeps restarting on the logo

Did you try unplugging then holding power button while plugging tv back in?
Forum: Troubleshooting TVs and Video Sources 08-10-2022, 10:23 AM
Replies: 33
Views: 262
Posted By dskall
Re: Philips TV 40PFL3148H/12 keeps restarting on the logo

So update failed or did update and not fixed the problem?
Forum: Troubleshooting TVs and Video Sources 08-09-2022, 09:54 AM
Replies: 10
Views: 173
Posted By dskall
Re: toshiba 50L4333D TV with a LG 32L4300 board low brightness

https://www.manualslib.com/manual/1242739/Toshiba-40l7363rk.html?page=14#manual
Forum: Troubleshooting TVs and Video Sources 08-07-2022, 05:11 PM
Replies: 3
Views: 127
Posted By dskall
Re: Hisense 58R6009 T-Con board shorted chip

I would double check for shorted pins and unsoldered pins.
Forum: Troubleshooting TVs and Video Sources 08-04-2022, 06:23 PM
Replies: 11
Views: 252
Posted By dskall
Re: Sony KDL-46R450A No Power, No red LED status

I would say you have a mainboard problem.
Forum: Troubleshooting TVs and Video Sources 08-01-2022, 01:08 PM
Replies: 28
Views: 385
Posted By dskall
Re: Samsung UN55H8000AF - No Picture, Working Backlight, Replaced T-Con Board

I believe TV will work without t-con connected to chassis. And there are grounds going through LVDS cable, So maybe a problem on mainboard or cable.
Forum: Troubleshooting TVs and Video Sources 08-01-2022, 12:32 PM
Replies: 28
Views: 385
Posted By dskall
Re: Samsung UN55H8000AF - No Picture, Working Backlight, Replaced T-Con Board

You have 3 leds on but dim. T-con change did nothing and your 12v is steady. Seems like bad ground.
Forum: Troubleshooting TVs and Video Sources 08-01-2022, 12:19 PM
Replies: 28
Views: 385
Posted By dskall
Re: Samsung UN55H8000AF - No Picture, Working Backlight, Replaced T-Con Board

And with both ribbons to panel off you get same lights?
Forum: Troubleshooting TVs and Video Sources 07-31-2022, 09:25 PM
Replies: 39
Views: 632
Posted By dskall
Re: Phillips 55PFL5602/F7 T-Con failure?

You can use alcohol to find hot component.
Forum: Troubleshooting TVs and Video Sources 07-31-2022, 05:57 PM
Replies: 39
Views: 632
Posted By dskall
Re: Phillips 55PFL5602/F7 T-Con failure?

So, you basically have only 12v on t-con with cables hooked up? And you checked voltages when you removed cables and same no voltage?
Forum: Troubleshooting TVs and Video Sources 07-30-2022, 10:44 PM
Replies: 2
Views: 152
Posted By dskall
Re: Samsung LE32E420E2W Troubleshooting Assistance

I would try a new t-con. Or post good picture of t-con.
Forum: Troubleshooting TVs and Video Sources 07-30-2022, 11:14 AM
Replies: 38
Views: 660
Posted By dskall
Forum: Troubleshooting TVs and Video Sources 07-29-2022, 09:04 PM
Replies: 38
Views: 660
Posted By dskall
Re: Vizio 40 V405-H19 has backlight, no display

You could check those test points for shorts. You could cut the traces and check the voltage. Check the caps around the ic. Check for 12v to the ic.
Forum: Troubleshooting TVs and Video Sources 07-29-2022, 03:11 PM
Replies: 20
Views: 335
Posted By dskall
Re: LG 55UB8500 no picture.

Why are you giving picture of t-con? You said you have no voltage going to t-con. Thus you need to look on main board and find where you are losing the 12v.
Forum: Troubleshooting TVs and Video Sources 07-29-2022, 11:23 AM
Replies: 4
Views: 184
Posted By dskall
Re: Samsung UN65HU7250 Power Supply Repair

As long as thier intact and have continuity they should be fine. They are just compressed ferrite
Forum: Troubleshooting TVs and Video Sources 07-29-2022, 11:19 AM
Replies: 20
Views: 335
Posted By dskall
Re: LG 55UB8500 no picture.

How could I have location? You provide no pictures or schematic. Trace the 12v from t-con terminals back to trans. that controls the power to t-con.
Forum: Troubleshooting TVs and Video Sources 07-29-2022, 10:36 AM
Replies: 36
Views: 433
Posted By dskall
Re: SAMSUNG UN50TU8000F rebooting, backlight ok. No 12v to panel boards.

Still learning, but I think on PNP that gate will need to be negative (-1.7v) in respect to source
Forum: Troubleshooting TVs and Video Sources 07-29-2022, 10:29 AM
Replies: 36
Views: 433
Posted By dskall
Re: SAMSUNG UN50TU8000F rebooting, backlight ok. No 12v to panel boards.

Can we get some good picture of panel boards??
Forum: Troubleshooting TVs and Video Sources 07-29-2022, 10:23 AM
Replies: 20
Views: 335
Posted By dskall
Re: LG 55UB8500 no picture.

Check transistor that switches on voltage to t-con.
Forum: Troubleshooting TVs and Video Sources 07-28-2022, 09:49 PM
Replies: 38
Views: 660
Posted By dskall
Re: Vizio 40 V405-H19 has backlight, no display

The main supplies 12v, data signals and some other information. The t-con generates the required panel voltages and timing signals to run the panel. The chip around your vgh and vgl test point is...
Forum: Troubleshooting TVs and Video Sources 07-28-2022, 09:43 PM
Replies: 36
Views: 433
Posted By dskall
Re: SAMSUNG UN50TU8000F rebooting, backlight ok. No 12v to panel boards.

Not sure the t-con is on the panel. Probably a short on board or panel causing reboot.
Forum: Troubleshooting TVs and Video Sources 07-28-2022, 09:27 PM
Replies: 38
Views: 660
Posted By dskall
Re: Vizio 40 V405-H19 has backlight, no display

As far as voltages the main only supplies 12v. Required panel voltages are generated by t-con
Forum: Troubleshooting TVs and Video Sources 07-28-2022, 08:57 PM
Replies: 38
Views: 660
Posted By dskall
Re: Vizio 40 V405-H19 has backlight, no display

VGH and VGL are generated on t-con.
Forum: Troubleshooting TVs and Video Sources 07-27-2022, 03:27 PM
Replies: 20
Views: 335
Posted By dskall
Re: LG 55UB8500 no picture.

Are backlights coming on, flashing? If not, is there a picture on screen using a flashlight?
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