Hi everyone,
This is a display versus television, but same panel and board structure as UN(E)XXTU8000 and QNXXQ60TA's.
First the background, I have several of these with lot more at work that died the same death and from the same cause.
All of them are missing the havdd and avdd voltages.
1.8v, 1.9v, 3.3v, are ok. Backlighting, smps board, sound, processor all seem ok.
I started a schematic, converted to pdf so everyone could see it. I started this past weekend so it is just a beginning, I'm working on the fb_trdy_x traces as I type.
I think this will really help everyone that has the combo main / t-con board using Silicon Mitus' VPMS2SM ic.
Please ignore the footprints and model data if the pdf included it...I haven't gotten that far yet.
Ok, so I have A13V through Q211 no problem. I believe the VIN_12 feeds the 1.8v, 1.9v, and 3.3v.
I have VIN_12 at Q400...source, but no HVIN_12V at the drain. Gate wrings good to U400-6. Not sure if R4143 should be 33 ohm's it is the same on all my boards.
Does anyone know what enables 'GD'? Maybe 'EN2' for HAVDD and AVDD, and 'EN1' for 1.8v, 1.9v, and 3.3v.
I have no HAVDD or AVDD with or without flex ribbon connected.
I did order the service manual, but received it missing pages, chapters, and the pinouts don't match up.
Looks like it was photoshopped from different manuals.
Any help would be appreciated. Maybe a moderator could make a sticky from the pdf...when we get closer to done.
This is a display versus television, but same panel and board structure as UN(E)XXTU8000 and QNXXQ60TA's.
First the background, I have several of these with lot more at work that died the same death and from the same cause.
All of them are missing the havdd and avdd voltages.
1.8v, 1.9v, 3.3v, are ok. Backlighting, smps board, sound, processor all seem ok.
I started a schematic, converted to pdf so everyone could see it. I started this past weekend so it is just a beginning, I'm working on the fb_trdy_x traces as I type.
I think this will really help everyone that has the combo main / t-con board using Silicon Mitus' VPMS2SM ic.
Please ignore the footprints and model data if the pdf included it...I haven't gotten that far yet.
Ok, so I have A13V through Q211 no problem. I believe the VIN_12 feeds the 1.8v, 1.9v, and 3.3v.
I have VIN_12 at Q400...source, but no HVIN_12V at the drain. Gate wrings good to U400-6. Not sure if R4143 should be 33 ohm's it is the same on all my boards.
Does anyone know what enables 'GD'? Maybe 'EN2' for HAVDD and AVDD, and 'EN1' for 1.8v, 1.9v, and 3.3v.
I have no HAVDD or AVDD with or without flex ribbon connected.
I did order the service manual, but received it missing pages, chapters, and the pinouts don't match up.
Looks like it was photoshopped from different manuals.
Any help would be appreciated. Maybe a moderator could make a sticky from the pdf...when we get closer to done.
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