Have a 50" Celsus, TV powers on, screen illuminates ok, has sound, but no display, tried using menu etc and still no display.
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Re: Celsus DLED50272FHDCNTD no picture
If I unplug the LVDS cable from main board to Tcon, the screen doesnt change at all
Here is a pic of the board set up
Am I looking at needing a new main board??
Any advice greatly appreciated.Attached Files -
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Re: Celsus DLED50272FHDCNTD no picture
on the tcon board look for the fuse and check the voltage on both sides of itComment
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Re: Celsus DLED50272FHDCNTD no picture
bottom long connector too the right theres a diode d111? the fuse is above it f101? hard too zoom in on your picture as goes out of focusComment
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Re: Celsus DLED50272FHDCNTD no picture
This might be a firmware issue. Do you have a programmer?Comment
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Re: Celsus DLED50272FHDCNTD no picture
on the top of the tcon there are two small ribbon cables if you remove one end of one cable and turn tv on what do you see on the screen? reconnect that cable and try it with the second oneComment
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Re: Celsus DLED50272FHDCNTD no picture
im running out of ideas one last test i can think of is on the tcon board you will see some round gold colored test pads with writing by the sides of them start with the ones that start with a letter v test the voltage and let us know what the pcb marking is IE VIN IN 12V VGA 1 12V ETC ETCComment
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Re: Celsus DLED50272FHDCNTD no picture
Not sure if you need all these but lol
V12 12.31
V102 1.20
VGH 0.18
X529 2.11
V55 0.03
V12IN1 12.32
VGA1 0.08
VGA2 0.12
VGA3 0.13
VGA4 0.12
VGA5 0.13
VGA6 0.13
VGA7 0.10
VGA8 0.10
VGA9 0.01
VGA10 0.01
VGA11 0.01
VGA12 0.01
VGA13 0.01
VGA14 0.01
WP INV R602 1.04
AP0 1.07 AN0 1.32
AP1 1.07 AN1 1.34
AP2 1.10 AN2 1.28
AP3 1.11 AN3 1.28
AP4 0 AN4 0
ACP 1.19 ACN 1.16
BP0 1.07 BN0 1.34
BP1 1.07 BN1 1.33
BP2 1.09 BN2 1.29
BCP 1.21 BCN 1.17
PM5P 0
PM8N 0
PM9P 0
PM9N 0
Ducky29 has suggested the firmware has gone bad? Anyone comfirm this please?Comment
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Re: Celsus DLED50272FHDCNTD no picture
Did you also check if any component in the TCON is hot?
Or use a hdmi and check if you have any sound. If you do have sound but no picture then TCON(most likely) /mainboard is bad.
If you don't have sound then you have a firmware problem.Last edited by ducky29; 11-26-2018, 05:39 AM.Comment
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Re: Celsus DLED50272FHDCNTD no picture
Looking at the voltages i would try another tcon board just use a seller that has returns policy if faulty on arrivalComment
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Re: Celsus DLED50272FHDCNTD no picture
keep us updated please when it arrives thanksComment
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Re: Celsus DLED50272FHDCNTD no picture
The new T-CON Bd will fix your problem. Though there is 13V on both ends of the fuse, there are on the T-CON generated voltages that are missing due to one of the ICs producing HVDD, etc is not working.Comment
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