Badcaps.net Forum
Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting TVs and Video Sources
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 04-08-2021, 11:25 AM   #1
samtron786
Member
 
Join Date: Aug 2016
City & State: NRW
My Country: germany
I'm a: Knowledge Seeker
Posts: 68
Default Telefunken D32F289M4CWI no picture Only the sound

The problem with the Telefunken LCD TV "D32F289M4CWI" is that since switching from one program to the other, the picture is gone and only the sound can be heard (screen remains black).

The TV is about 2 years old.
Would still be grateful for help
many thanks
samtron786 is offline   Reply With Quote
Old 04-08-2021, 12:29 PM   #2
nomoresonys
Badcaps Veteran
 
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 7,707
Default Re: Telefunken D32F289M4CWI no picture Only the sound

(screen remains black) If you mean there's no backlight, check the screen by shining a flashlight on it, maybe at an angle, see if there's a picture or hit menu see if there's a display at all with flashlight.
__________________
(Signature) One of the first and least expensive things you can do when you have an issue is take the powerboard out of the tv, flip it over and look the solder joints over with a magnifying glass if needed, add a little flux to make the solder flow well and add solder to any joints that look even a little suspect. You can practice on a scrap pcb board if needed, careful not to bridge any joints, and always let the board sit for quite a while or discharge the big caps with an appropriate resister before working on it (safety first) to try to keep from getting shocked, it doesn't take 1000 volts to KILL, a lot less can kill, so be careful, it's only a tv.

Last edited by nomoresonys; 04-08-2021 at 12:30 PM..
nomoresonys is online now   Reply With Quote
Old 04-09-2021, 01:34 AM   #3
samtron786
Member
 
Join Date: Aug 2016
City & State: NRW
My Country: germany
I'm a: Knowledge Seeker
Posts: 68
Default Re: Telefunken D32F289M4CWI no picture Only the sound

Yes I can take a picture with low light
samtron786 is offline   Reply With Quote
Old 04-10-2021, 03:18 AM   #4
samtron786
Member
 
Join Date: Aug 2016
City & State: NRW
My Country: germany
I'm a: Knowledge Seeker
Posts: 68
Default Re: Telefunken D32F289M4CWI no picture Only the sound

I tested the LED again, they are all fine
samtron786 is offline   Reply With Quote
Old 04-10-2021, 03:45 AM   #5
nomoresonys
Badcaps Veteran
 
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 7,707
Default Re: Telefunken D32F289M4CWI no picture Only the sound

Read and comprehend/translate post #2.
nomoresonys is online now   Reply With Quote
Old 04-11-2021, 01:53 AM   #6
samtron786
Member
 
Join Date: Aug 2016
City & State: NRW
My Country: germany
I'm a: Knowledge Seeker
Posts: 68
Default Re: Telefunken D32F289M4CWI no picture Only the sound

Yes I only have sound, no picture and no obstruction lighting
samtron786 is offline   Reply With Quote
Old 04-11-2021, 02:27 AM   #7
nomoresonys
Badcaps Veteran
 
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 7,707
Default Re: Telefunken D32F289M4CWI no picture Only the sound

Check the fuse on the tcon board, meter 20 vdc black - probe on metal chassis ground, red + probe on each side of fuse see if it's about 12 volts on each side.
nomoresonys is online now   Reply With Quote
Old 04-12-2021, 12:12 PM   #8
samtron786
Member
 
Join Date: Aug 2016
City & State: NRW
My Country: germany
I'm a: Knowledge Seeker
Posts: 68
Default Re: Telefunken D32F289M4CWI no picture Only the sound

Yes I have 12.20V in both sides
a question, is there a list of VAVDD how much current has ??
the diode has 3.33V
many thanks
samtron786 is offline   Reply With Quote
Old 04-12-2021, 03:29 PM   #9
nomoresonys
Badcaps Veteran
 
Join Date: Jan 2013
City & State: midwest
My Country: U.S.
I'm a: Knowledge Seeker
Posts: 7,707
Default Re: Telefunken D32F289M4CWI no picture Only the sound

Some simple voltage testing there: https://www.youtube.com/watch?v=t11FEuu1oWU
nomoresonys is online now   Reply With Quote
Old 04-12-2021, 04:07 PM   #10
samtron786
Member
 
Join Date: Aug 2016
City & State: NRW
My Country: germany
I'm a: Knowledge Seeker
Posts: 68
Default Re: Telefunken D32F289M4CWI no picture Only the sound

gives wiring diagram of this TV ??
or do I have to look for wiring diagram from T-Con?
samtron786 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2022
Powered by vBulletin ®
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 12:34 PM.
Did you find this forum helpful?