My 55 inch sinotec smart TV does not have a signal. It is connected to a Decoder via a HDMI cable. It's been showing channels from the Decoder all day long and only around 18h00 this started.

SOURCE: BenQ FP241W 24" inch problem with HDMI connection

Sounds like the HDMI port on the monitor has been shorted out.
There are very small fuses on the video board that can be changed, but they are fiddly and you may end up doing more harm then good if you are not sure what your doing.
The fuses are actually soldered to the board...it's not a case of pop one out and pop one in like the glass type.


Hope it helps =)

SOURCE: No signal input when connecting PC to LG TV via HDMI

Do you also have a computer monitor attached to the computer when attempting to use the HDMI?

SOURCE: hdmi

Bring up the "service" menu, put the TV in standby mode, then press in sequence :

Onscreen Display ( the little screen with the i+ in it )
5 ( channel number 5 )
Volume Up ( upper end of volume button )
Analogue ( middle top button )

The TV should switch on and when it's warmed up, you should see a screen with lots of big green lettering on it.

Press the "menu" button ( middle bottom )

Use the direction dial to move down to "LCD Drivers" and press right on the dial to enter this menu.

Move down to "S H Pos Reg R". It should be "10", change it to "11". ( Left/Right to adjust )
Move down to "S H Pos Reg G". It should be "10", change it to "11".
Move down to "S H Pos Reg B". It should be "10", change it to "11".

Press the menu bottom to drop out of the menus, and the standby button to drop to standby. Switch back on, and hopefully your ghosting will be gone.

SOURCE: digital - Weak or no signal digital coax when hdmi dvd player on

if u have placed your DVD next to your tv ... just maintain distance between then and check out

SOURCE: no tv signal on my olevia 232-s12

cable or Ant.. ? after the scan if there is no channels found (0 digital, 0 analog) then try with cable or Ant to see if any of them work.. if they still don't pick up any channels and the whole yellow progress line goes across.. then it sounds like the tuner on the tv is bad.. and the tuner is part of the main-board so the whole main-board will have to be exchange or repair.. contact Amergence technology they are a 3rd party repair center that service Olevia TV's and they will be able to give you an idea on the repair cost..

<<< Amergence Technology number is 866-965-3842 >>