Telefunken 24550s27yxd

ralph65 · 17 Mar 2023

Good evening everyone. I have this lcd tv main 17mb140 with sound and white screen. The flat lcd is ok. The voltages on the main are present. What can I check?Is it a firmware problem? Thank you.

teraspy · 17 Mar 2023

yokoono

yokoono · 17 Mar 2023

Measure if the t-con is powered by 12V. Measure the voltages on the t-con especially VGH(VONE) and VGL(VOFFE). If possible, disconnect one ribbon at a time to the panel and see if the image appears. Clean the contacts from the ribbons.

ralph65 · 17 Mar 2023

yokoono' Alıntı:
Measure if the t-con is powered by 12V. Measure the voltages on the t-con especially VGH(VONE) and VGL(VOFFE). If possible, disconnect one ribbon at a time to the panel and see if the image appears. Clean the contacts from the ribbons.

The 12v voltage is present. The t-con is integrated into the LCD panel. I need to check vgh and vgl.

yokoono · 17 Mar 2023

VGH and VGL are voltages generated by a dc-dc converter.
VGH 25-30V
VGL 5-10V negative
24550s27yxd Is this the tv model?

ralph65 · 17 Mar 2023

Looking for USB firmware to restore. Can you help me? Thank you

yokoono · 17 Mar 2023

Try recovery software for 17mb140. Titanium

https://tavsiyeforumu.com/kaynaklar/categories/mb140.22/

ralph65 · 17 Mar 2023

yokoono' Alıntı:
Try recovery software for 17mb140. Titanium

https://tavsiyeforumu.com/kaynaklar/categories/mb140.22/

I tried with firmware from USB but nothing happens. I don't see anything on the screen. all white. I gave menu 1505+ok the same.

yokoono · 17 Mar 2023

It is installed with the OK key on the remote control pressed and the TV plugged in. The key is released when the stby LED of the TV starts flashing quickly.

ralph65 · 17 Mar 2023

yokoono' Alıntı:
Si installa con il tasto OK del telecomando premuto e il televisore collegato. Il tasto viene rilasciato quando il LED stby del televisore inizia a lampeggiare velocemente.

yokoono' Alıntı:
Try recovery software for 17mb140. Titanium

https://tavsiyeforumu.com/kaynaklar/categories/mb140.22/

I tried but it doesn't work.

yokoono · 17 Mar 2023

The software is unzipped on a stick formatted with FAT32. I'm surprised that you knew how to measure the 12v voltage on the t-con and you don't know how to install a software.

ralph65 · 17 Mar 2023

The problem is that if the Main does not read the firmware. I did with the ok button but nothing.

yokoono · 17 Mar 2023

The problem is not software but hardware. Call a service. For repair you need knowledge of electronics and dedicated equipment.

ralph65 · 17 Mar 2023

yokoono' Alıntı:
The problem is not software but hardware. Call a service. For repair you need knowledge of electronics and dedicated equipment.

I am a repair technician. Equipment is there. I'm trying to fix.