Question about Toshiba CZ27V51 27" TV

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TV Tuner failure after warm up

I'm a Systems Engineer and my father has a Toshiba CZ27V51 TV that started to exhibit intermittent tuner drop outs where the tuner drops the TV signal and goes static until you wiggle the coax cable a little. Once you wiggle it, the problem goes away for few but reoccurs. It seems to be a possible failure with the tuner control card and/or board. I opened up the unit but was unable to see any damage other than a loose cable on the tube itself which was reseated. I wanted to inquire if others have seen this issue and if Toshiba has any solutions towards salvaging a some what good and decent tv.


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Re: TV Tuner failure after warm up

Check where the F connector is soldered inside the tuner circuitry, it may have a loose solder joint there. Also check the inside of the connector where the coax is attach, sometimes the inside conductors spreads and do not make good electrical contacts.
Good Luck.

Posted on Jan 21, 2008

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Toshiba tv no place to insert my ariel

Your problem is the tuner socket has broken off. You can either install anew tuner unit or replaced the tuner socket which is a bit more fiddle.

Jan 09, 2014 | Toshiba 14AF42 14" TV

1 Answer

Quisiera saber que numero es el fly back de tv toshiba cz27v51

ustede debe abril el chasis del TV, y ver el numero del Flyback.
o ver el catalogo de repuesto. o llamar a Toshiba de USA, y tenga
el numero de parte.
Dios le bendiga.

Oct 11, 2012 | Toshiba CZ27V51 27" TV

1 Answer

I have a Toshiba CF27H50 that just stated losing the picture after about an hour of viewing. After an hour, it starts to flicker and then the picture just is lost and it just goes to black/snow screen and...

This is a common symptom of tuner trouble. A common problem is bad solder connections inside. As the set warms up, small cracks on joints from the tuner circuit board to its metal case can cause the trouble you describe. If you tap on the TV or wiggle the connector where the antenna or cable line goes, the picture will sometimes pop back in if this is the case. It's also possible the tuner has parts that quit working as they warm up. The only way to know for sure is to remove the tuner, check over the connections, repair any that are iffy, and see if the trouble continues. This is not a repair for a do-it-yourselfer, though, because of the soldering involved.

If the trouble isn't bad connections in the tuner, there's not much you can do. I've checked the parts sources I use. The original Toshiba part is no longer available and I haven't found any replacement. If you're using a cable box or other video source, you can keep using the TV just for its AV inputs and not worry about the tuner any more. Otherwise, given repair labor cost and lack of parts, it's probably more economical to replace this TV instead of trying to repair it.

Jul 22, 2011 | Toshiba CF27H50 TV

1 Answer

Sony KV-27S10 has intermittent tuner issues. moving the cable connection on the back of the set sometimes clears the picture.

This was a common problem with the Tuners of these models. The replacing of the Tuner should fix the Problem. You may be able to order it from Sony.
Here is their Customer Service Number.
I hope this helps,

Oct 27, 2009 | Sony KV-27S10 27" TV

1 Answer

TV Picture Pops In and Out Toshiba Color TV CZ27V51

mine was doing the same thing. If i put pressure on the cable input from left or right it would fix this.

May 22, 2009 | Toshiba CZ27V51 27" TV

1 Answer

RCA P61310 Works on all inputs but ant a

The other inputs bypass the tuner, so I'd be looking at tuner failure. RCA sets are known for having poor solder connections inside the tuners. I would start there. If you are not comfortable with working insode the set or can not solder, check with a local service shop to get an estimate for resoldering/replacing the tuner.


Feb 13, 2009 | RCA P61310 TV

1 Answer

Do Ineed a converer to receive digital tv signals ?

Your TV has an ATSC tuner and will receive over-air HDTV reception available in your area with an antenna.

Jan 27, 2009 | Toshiba CZ27V51 27" TV

1 Answer

Is my Toshiba TV digital or analog?

if there is a label on the tv stating any of these words “Integrated Digital Tuner,” “Digital Tuner Built-In,” “Digital Receiver,” or “Digital Tuner,” “DTV,” “ATSC,” or “HDTV” then yes
if they say “Digital Monitor” or “HDTV Monitor,” or as “Digital Ready” or “HDTV Ready" then no

Jan 08, 2009 | Toshiba 24AF42 24" TV

1 Answer

No sound or tv signal

Probably need the TUNER either fixed or replaced.

Apr 27, 2008 | Toshiba CZ27V51 27" TV

1 Answer

Intermittent reception problem

I think you have a loose connection inside the tuner. Sometimes this can be repaired by removing the tuner and soldering the connections. Sometimes the tuner will have to be replaced. The cable connector which sticks out the back of your set could be broken loose inside the tuner. This type of problem is very common. You never know when it's going to happen. IT will change with temperature. You need to have a technician check it for you. Stargazer

Feb 04, 2007 | Sony FD Trinitron WEGA KD-27FS170 TV

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