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Search: Posts Made By: dskall
Forum: Troubleshooting TVs and Video Sources 12-09-2021, 11:58 PM
Replies: 28
Views: 1,766
Posted By dskall
Forum: Troubleshooting TVs and Video Sources 12-08-2021, 10:26 AM
Replies: 28
Views: 1,766
Posted By dskall
Re: TCL 75R615 has sound, no backlight

I maybe wrong here but I think your problem is that your gate to source is 10v to turn on mosfet. Your meter may not be able to do that.
Forum: Troubleshooting TVs and Video Sources 12-07-2021, 11:44 AM
Replies: 28
Views: 1,766
Posted By dskall
Re: TCL 75R615 has sound, no backlight

Need the part numbers to know the gate, source and drain. Many videos on how to test.
Forum: Troubleshooting TVs and Video Sources 12-06-2021, 07:21 PM
Replies: 28
Views: 1,766
Posted By dskall
Re: TCL 75R615 has sound, no backlight

Well they shouldn't test open. Probably not testing them right, but they almost always test shorted if bad.
Forum: Troubleshooting TVs and Video Sources 12-05-2021, 10:27 PM
Replies: 28
Views: 1,766
Posted By dskall
Re: TCL 75R615 has sound, no backlight

Thanks again for the info. I get on here mostly to learn. Do you know what happened to budm? Looks to be about a year since he posted.
Forum: Troubleshooting TVs and Video Sources 12-05-2021, 09:41 PM
Replies: 28
Views: 1,766
Posted By dskall
Re: TCL 75R615 has sound, no backlight

I'm surprised you had video.
Forum: Troubleshooting TVs and Video Sources 12-05-2021, 05:41 PM
Replies: 28
Views: 1,766
Posted By dskall
Re: TCL 75R615 has sound, no backlight

You can probably remove it and see if everything powers up. Just read my disclaimer first.
Forum: Troubleshooting TVs and Video Sources 12-05-2021, 05:32 PM
Replies: 28
Views: 1,766
Posted By dskall
Re: TCL 75R615 has sound, no backlight

No polarity on those. Does it measure as shorted?
Forum: Troubleshooting TVs and Video Sources 11-29-2021, 07:32 PM
Replies: 28
Views: 1,766
Posted By dskall
Re: TCL 75R615 has sound, no backlight

I would start at power board. Sounds like shorted component causing the led driver to make noise. Need some pictures of boards.
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