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Hisense LED TV 55 INCH
MODEL LEDN55K20DP
MAIN BOARD RSAG7.820.5511/ROH
PANEL Hisense HD550DF-B31(010)/S1/FM
T-CON 14Y_EF11_TA2C2LV0.1
N55 SPI Flash  MX25L3205




 

Dear all,

this TV, Hisense H60N5705 installed in a conference room, turns off automatically a few minutes after being switched on.

The problem started to occur suddenly, during a video conference. It was switched on with the remote control, continued to work for a while and then switched off again.

The room technician changed the power cable (?), the HDMI cable (??) but the problem of course remained.

I asked if it changes anything by connecting the TV to another source but, even if it is left on the OSD menu, it stays on for a few minutes and then switches off.

So they took the TV (a 60’ which is not easy to handle) to the lab and asked me to check it.

I still have to open it up, but I don't have the schematic diagrams and should proceed by trial and error, although I imagine a problem with the power supply stage.

How do you suggest I proceed, since I don't do TV but RF ?

Thank you for any help,
Best
Maximus

Hello, I have this LCD TV which has a very white screen, the picture is visible. I could not find any fault on the CCFL Lamp inverter and was suspecting the T-Con panel of failure. The T-con panel is integrated in the control board. What i did is using "freeze it" cold spray i sprayed one of the IC's and it cured the fault. Perhaps the IC needs to be replaced. The part number is AS15-G. This component is not available for purchase in south africa and i would need to import it from china. This part is a LCD voltage buffer. Regards Angelos

Sziasztok! A fent nevezett szemétládához keresek HIU-812-S "szolga" inverterpanelt, vagy beszerzési forrást, vagy ha nincs akkor BD9897FS smd IC-t. Az IC a S...nél rendelhető, horror áron. Hátha van barátságosabb megoldás. Előre is köszi!