Question about Symphonic ST420FF 20" TV

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Symphonic 20' The color does not has sound but no color.

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Re: Symphonic 20' - Symphonic ST420FF 20" TV Standard (CRT) Televisions

Check your tuner

Posted on Mar 18, 2008

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Re: Symphonic 20'

Chek your color section or replace your crt connector

Posted on Jan 29, 2008

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I am trying to hook up a dvd player to my Symphonic TV. (ST420FF) When I hook the red, white and yellow cords to the back of the dvd player, I can't find it on the tv. I don't see a line in or line out...

try to look first the video in commonly the color is yellow, white, red the yellow one is the video and the white,red is the audio if you connect it press the video on your remote.

Oct 12, 2010 | Symphonic ST420FF 20" TV

1 Answer

Tv picture is getting too big for the screen. Can the picture size be reduced?

Hi, well this is most likely a Aspect Ratio issue, this can be set via the TV's Menu. You simply need to adjust this aspect ratio, to suit you viewing requirements.
It is all explained how to do this in your user manual, link provided below.'s-Manual-T0RVek16az.html

Sep 29, 2010 | Symphonic ST420FF 20" TV

1 Answer

Trying to get the remote to work on my symphonic

Change batteries?Take it aparts,clean it with Q Tips
with some rubbing alcahols in the rubbers knobs and
clean the films between the circuits board.Don't work after this.Buy a new remote at this website.1-800-remotes Factory Original.Yes,universal remotes it cheaper,but causes univeral codes,more headaches later.

Oct 21, 2009 | Symphonic ST420FF 20" TV

1 Answer

Green tint

Check 3.58 MHz color oscillator,, little metal can near large ic,
Also check color output transistors or any loose connections in the output stage

Jan 19, 2009 | Symphonic ST420FF 20" TV

1 Answer

No Picture or Sound

I dont think it's worth getting a repair man to come fix a Symphonic TV... honestly, they are problem prone... and It would cost much less to just buy a whole new one. I have a symphonic tv with no remote, and now, I cant switch into game mode! It's like they designed their tv's to be crappy!

Jun 07, 2008 | Symphonic ST419E TV

1 Answer


did u check the chroma chip

Oct 24, 2007 | Symphonic ST420FF 20" TV

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