Lot no for thomson colour tv 20MT8DRZ - Thomson 21DC320 21" TV

Your TV color drivers could be at fault. They run very hot and sometimes develop dry solder. You can confirm this by hitting the side of the TV when its on and see if the color comes back. If they do or even flicker get somebody to resolder the CRT base pcb of the TV.

Best advise! Sell it or exchange it for a better TV. Your old TV
may not more than Rs. 800/=

Now a days you do not get talented technicians and original
spares. Do not attach sentiments to the TV. If so keep it in one corner
and go for another TV.

I have an old Thomson TV 21FDR more than 10 years old. Recently the Tv screen has a lot of disturbances with the screen full of hirizontal lines and a hissing sound. A well trained technican had replaced the tuner with a new one . But after some 2-3 days the same problem is with the tv. Kindly help me with suggestions.

If you had mentioned that the picture tube is defective and confirmed it is a serious fault. You can rejenuvate the picture tube with a gun tester and short remover.This is not a confirmed solution but you can take a last try. Changing the picture tube is not recommendable for an old set and I would like you to go for a new Tv which will work out cheaper and gauranteed.
Hope you decide sensibly. Good day

if crt pic tube magnitized need to degausse with coil

Your tv could have one of several faults. None of which are to be tackled by anyone except a qualified engineer due to the electric shock hazard.the first problem could be the crt (tube) the second could be the componets on crt base circuit board ie resistors or ic.
With a tv 9 years old it may not be economical to carry out a reair.

pls. first open your tv menu and select sound & colour -sys see the sound-sys / colour-sys is maching with your country transmitiongh sys {EXP.: PAL-BG / NTSC-DK /NTSC- MN /SCEAM- I ) IF your not set purfictly pls select AUTO colour sys and set automaticly set colour & sound .[see user's menual book and set your tv.]

Check the batteries in the remote 1st. If that don't work, call a TV tech to replace the IR sensor in the TV

you have a laser that has gone out blue or green take the face off and see which of the colors you need you can still find lasers on ebay if you need one but it will require someone with a little expertise to replace them. if this is not for you then its time for a new TV this is probably the best option its more expensive to fix in most cases than to replace..........I hope this helps

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