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Question about RCA F27628 27" TV

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RCA tv only in black and white?

Hi, I have an RCA TV model F27648 (color) that now only shows picture in Black and White. The funny thing is that all menus and Guide Plus menus are in color. Picture is the same on all inputs (cable, video1 and video 2) Any solutions? I tryed all settings and tryed to plug cable directly to TV instead of going through the components. No luck. Please help.

Posted by Eric Bouvette on

  • tiretech Feb 01, 2009

    Is that an expensive fix?

  • elecmurillo May 11, 2010

    tv rca model f25442 problem picture only black and white

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The route through the circuits in the TV from the various sources all lead to the final video amplifiers for red green and blue. Somewhere along the route is a circuit called a colour switch. This allows colour if the signal is strong enough, otherwise it only allows black and white. This fault suggests a weak video chip which is the one just before the switch circuit. the fault could also be a faulty coupling capacitor to or from this chip, or a low power supply voltage. Check for dry soldered joints around this circiut. Please note if resoldering on new televisions that they may have non leaded solder which requires about 50 degrees centigrade hotter iron.

Posted on Oct 16, 2006

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RCA model #f27648 reds missing from picture

It sounds to be a video output stage circuit fault. Check all the solder terminals at its CRT base card, including the solder terminals of the CRT base to the card. Re-solder all the suspected solder terminals by applying a little more fresh solder. Contact any service technician. Check the solder terminals of Red color output transisotor. If needy, replace it with a new one with same number printed on it. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience.
http://electronicshelponline.blogspot.com/ Pull up older posts there.
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Went black and white rca f32648

so far no proper details are available regarding resetting this particular TV ( f32648 ) .... i have checked user manual also

have you tried following things

1 - playing different dvds (dvd player )
2 - changing different channels ( cable tv or antenna )
3 - increasing ( to maximum ) & decreasing ( to minimum ) [in menu ]
contrast colour tint black level sharpness
picture presets auto colur colour warmth
4 - auto channel searching ( cable tv or antenna )

even after these trials if picture is in black & white then it is a hardware problem - since it is a rare problem no details are available about which component might have got deffective ...... only the service engineer who opens & checks your tv can tell the exact deffective component .......... sometimes it can be loose connection ( cracks at soldering joints - hit your TV lightly with your hand on left side or right side or on top - if color comes & goes then it is loose connection problem - all soldering joints should be resoldered by service engineer ) ..... or an IC might have got deffective ......... only after opening & checking your tv mainboard exact deffective component can be identified ......

for nearest RCA service center call 1800 336 1900 ( this number got from your TV's user manual - click this link for your TV's user manual - free down load - RCA F32648 model - http://download.rca.com/FilesForRCAcom/Manuals/15491880.pdf
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If you are using a composite connection (red/white/yellow RCA jacks), you have probably connected the yellow plug to a socket labelled Pr/Pb, Cr/Cb, or Y - on either the DVD player or the TV - most probably the TV. The yellow needs to be connected to a socket labelled "VIDEO". If you connect this to any socket labelled Pr/Pb, Cr/Cb, or Y, you will get a black and white picture.

If you are using a component connection (red/green/blue RCA jacks), one of the plugs is either not fully inserted into the socket or is in the wrong socket. If you remove any one of the R/G/B plugs, you will get a black and white picture.

If you are using a SCART cable (UK / AUS), you may have a bent, damaged or disconnected pin.

I suggest you check and correct the connections between your DVD player and TV. If you are unable to locate the problem, please try another cable as the one you are using may be damaged. If you are still unable to locate the fault, please let me know the brand and model number of the DVD player and how it is connected to the TV. If required, I can also draw a diagram showing the correct connections.


It would also be useful to know whether this "fault" suddenly occured, or whether you have just connected the player to the TV.

Hope this helps - please let me know if you need further assistance.

Regards,
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