Celsus DLED50272FHDCNTD no picture

[Bloopeta]

Have a 50" Celsus, TV powers on, screen illuminates ok, has sound, but no display, tried using menu etc and still no display.

[Bloopeta]

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.

[vinceroger69]

Re: Celsus DLED50272FHDCNTD no picture

on the tcon board look for the fuse and check the voltage on both sides of it

[Bloopeta]

Re: Celsus DLED50272FHDCNTD no picture

on the tcon board look for the fuse and check the voltage on both sides of it

Which one is the fuse please?

[vinceroger69]

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 focus

[ducky29]

Re: Celsus DLED50272FHDCNTD no picture

This might be a firmware issue. Do you have a programmer?

[Bloopeta]

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 focus

Hi, thanks for your help, I get 13v both sides

[vinceroger69]

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 one

[Bloopeta]

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 one

No change m8, same with either removed, blank illuminated screen

[vinceroger69]

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 ETC

[Bloopeta]

Re: Celsus DLED50272FHDCNTD no picture

This might be a firmware issue. Do you have a programmer?

No afraid not

[Bloopeta]

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 ETC

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?

[ducky29]

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.

[Bloopeta]

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.

Yes mate still have sound, as said in origional post, has sound and backlights, just no picture

[vinceroger69]

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 arrival

[Bloopeta]

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 arrival

Ive ordered one m8, worth a try for sake of £4 delivered.

[vinceroger69]

Re: Celsus DLED50272FHDCNTD no picture

keep us updated please when it arrives thanks

[Bloopeta]

Re: Celsus DLED50272FHDCNTD no picture

keep us updated please when it arrives thanks

Yes m8 ofcourse no probs. Thanks very much for your help

[Andrew F. Ali]

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.

[Bloopeta]

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.

Great, ive ordered it so hopefully be here in a couple of days, ill keep everyone updated