tv gone black and white

norm20004 · 16-10-2008, 11:01

tv gone black and white with flickering colored lines
but when i use my v-box its fine and when i use my dvd
please can you help
tv is a onn lcd

Nigel Goodwin · 16-10-2008, 11:02

Take it back to Asda.

chrisjr · 16-10-2008, 11:15

Is this from the internal tuner or some external device connected via a SCART lead?

If it is the tuner and analogue there may be some mileage in checking the aerial connections and tuning. Though I would expect the picture to have more faults than just a lack of colour if it was poor signal/tuning. So quite likely it has gone faulty. If it's a digital (Freeview) set then it is almost certainly faulty if the pictures are black and white.

If it is a SCART lead and you are using S-Video then either the SCART plug at one end has worked loose or one end has got switched to Composite while the other is still on S-Video. A loose plug is most likely to give the effect you describe though.

norm20004 · 16-10-2008, 11:46

the picture seems okay just that it has these red and green flickering lines
ove the bw picture yet it works fine with my v-box because i can change it to rgb from composite using the v-box settings
but my tv has no such menu

Nigel Goodwin · 16-10-2008, 14:09

Quote:

Originally Posted by norm20004

the picture seems okay just that it has these red and green flickering lines
ove the bw picture yet it works fine with my v-box because i can change it to rgb from composite using the v-box settings
but my tv has no such menu

So it's duff via composite from your V+ box as well, but OK via RGB? - this is what you would expect, as there's no colour on RGB, so it can't go B&W.

Presumably you don't get Freeview?, because that's RGB so there's no colour to go wrong there either.

You can't switch analogue TV to RGB, because it's an analogue PAL encoded signal, and it looks like the PAL decoder is duff in your TV.

norm20004 · 18-10-2008, 06:43

our you sure thats the right name for it
just that i am trouble trying to find a price for one
so i know if it would be cheaoer to buy another tv

Nigel Goodwin · 18-10-2008, 07:45

Quote:

Originally Posted by norm20004

our you sure thats the right name for it
just that i am trouble trying to find a price for one
so i know if it would be cheaoer to buy another tv

The PAL decoder is an integral part of the TV, not a spare part - the TV needs repairing, if you can find anyone who would look at it, and if they could source spares.

16-10-2008, 11:01	#1
norm20004 Forum Member Join Date: Oct 2008 Posts: 26	tv gone black and white tv gone black and white with flickering colored lines but when i use my v-box its fine and when i use my dvd please can you help tv is a onn lcd

18-10-2008, 06:43	#6
norm20004 Forum Member Join Date: Oct 2008 Posts: 26	PAL decoder our you sure thats the right name for it just that i am trouble trying to find a price for one so i know if it would be cheaoer to buy another tv

16-10-2008, 11:02	#2
Nigel Goodwin Forum Member Join Date: Apr 2006 Location: North Derbyshire Posts: 41,789	Take it back to Asda.

16-10-2008, 11:15	#3
chrisjr Forum Member Join Date: May 2004 Location: Reading Posts: 27,916	Is this from the internal tuner or some external device connected via a SCART lead? If it is the tuner and analogue there may be some mileage in checking the aerial connections and tuning. Though I would expect the picture to have more faults than just a lack of colour if it was poor signal/tuning. So quite likely it has gone faulty. If it's a digital (Freeview) set then it is almost certainly faulty if the pictures are black and white. If it is a SCART lead and you are using S-Video then either the SCART plug at one end has worked loose or one end has got switched to Composite while the other is still on S-Video. A loose plug is most likely to give the effect you describe though.

16-10-2008, 11:46	#4
norm20004 Forum Member Join Date: Oct 2008 Posts: 26	the picture seems okay just that it has these red and green flickering lines ove the bw picture yet it works fine with my v-box because i can change it to rgb from composite using the v-box settings but my tv has no such menu

16-10-2008, 14:09	#5
Nigel Goodwin Forum Member Join Date: Apr 2006 Location: North Derbyshire Posts: 41,789	Quote: Originally Posted by norm20004 the picture seems okay just that it has these red and green flickering lines ove the bw picture yet it works fine with my v-box because i can change it to rgb from composite using the v-box settings but my tv has no such menu So it's duff via composite from your V+ box as well, but OK via RGB? - this is what you would expect, as there's no colour on RGB, so it can't go B&W. Presumably you don't get Freeview?, because that's RGB so there's no colour to go wrong there either. You can't switch analogue TV to RGB, because it's an analogue PAL encoded signal, and it looks like the PAL decoder is duff in your TV.

18-10-2008, 07:45	#7
Nigel Goodwin Forum Member Join Date: Apr 2006 Location: North Derbyshire Posts: 41,789	Quote: Originally Posted by norm20004 our you sure thats the right name for it just that i am trouble trying to find a price for one so i know if it would be cheaoer to buy another tv The PAL decoder is an integral part of the TV, not a spare part - the TV needs repairing, if you can find anyone who would look at it, and if they could source spares.

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tv gone black and white