Firstly check the scart(euro)connecters are securely in when the fault appears both on the tv and the video source otherwise It sounds like an internal fault,when this happens try tapping the back lightly all over to see if that rectifies the fault,if it does then it is proberbly a dry joint and will take some close inspection internally in which case you will have to call out an engineer unless you feel confident enough to have ago yourself but unless you have some experiance i would not advise it.
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
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In order to ensure, it is not caused by the input device, connect a DVD player and see. Switch off TV, switch off power, remove plug and wait for 48 hours and retry. If problem persists, I suggest it is better to refer it to a qualified service technician, since the back cover has to be opened for investigation/rectification.
These procedures are from the owners manual, go into menu and then picture quality and then:
The Convergence feature lets you adjust the TV’s three tubes. When the TV tubes’
images are precisely aligned, they create the color images you see on the screen.
Over time, the picture can drift out of alignment (this is normal). If your picture
seems fuzzy or has a yellow tint, using Convergence could correct this
misalignment. Only one convergence is needed for all inputs, regardless of the
Note: Make sure the TV has been on for at least 30 minutes (TV needs to
warm up for best results) before starting Auto Converge or Red/Blue
When you select the Convergence feature, a submenu appears with three options:
Auto Converge Automatically aligns the projection lenses to self-correct
color images. You’ll see flashing squares of color dance across the screen
(this is normal).
Note: After performing auto convergence, use the Blue Centering and
Red Centering menus to fine tune convergence in the center of the
screen, if necessary.
Blue Centering Aligns the blue and green images to fine-tune the picture.
Red Centering Aligns the red and green images to fine-tune the picture.
Note: The ability to change channels is disabled when adjusting the
convergence options. The TV must be tuned to a usable signal to
converge the picture.
U have a LCD tv any models?Just buy a HDMI cable,one side of cable hook to the HDMI in the Wharfedale hub,the orther side to the HDMI LCD tv hub.Power on,play the thing,go to the LCD tv,go in the LCD tv menu pick HDMI 1,2,3 will get the movie or what u playing?If the Wharfedale work.
This is no solution but a point in a probable direction.
A tech guy told me ALL the LCDs they have seen in their repair shop have "swollen" capacitors, this is due to voltage instability. Lowering the internal voltage regulator and replacing the swollen capacitors (which eliminate noise) apparently restores the LCD to new working quality. Without actually "seeing" my problem the tech said that should repair it. I have not tried this yet but eventually will begin that way.