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Bad tuner on F27680gy

I can hear sound but see no picture. I am guessing the picture tube has gone bad. This TV has two tuners and a repairman once told me that if the first tuner ever goes, I can switch tuners. The user manual does not mention this. Do you know how I can switch tuners to make the other one primary?

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Re: Bad tuner on F27680gy

Hi. Your problem is not at all likely to be the tuner or the crt. Your problem will be frame collapse or fault in heater chain. Not complicated for repair shop to sort out for you.

Posted on Sep 30, 2007

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My 32" Sanyo HDTV from Walmart has problems with the picture and sound blinking off. You must push on TV to get the picture and sound to blink back on. Sometime it stays and sometimes it goes right off...

Sounds like you have bad solders in or around your tuner ***`y .Try knocking on the cable input while it`s working, this might confirm bad solder or cable connector. In case of bad solders you can take the cover off, the tuner will be right at the end of that connector and mounted on the circuit board . The bad solders are often on the p.c board itself . If you feel handy with a soldering iron you can resolder the tuner on the board, otherwise you might need the help from a local repairman. In any case you will know what is going on
Hope this will help Good luck

Dec 01, 2009 | Standard (CRT) Televisions

1 Answer

I have a Toshiba cx35e70 tv. The problem began as a turn on, live screen, no channels, no sound. I found that when I would tap on the tuner on the main board the problem would disappear. Every thing worked...

Is the VCR going through ch 3 or video inputs - if video inputs your TV tuner is likely bad if through ch 3 seeif te picture goes funny on ch 3 without using the VCR the tuner may be bad on higher band channels - smetimes you can remove the tuner and resolder the tuner itself. But if it always works with the VCR just use it that way and don't bother with the fix.

Sep 26, 2009 | Standard (CRT) Televisions

1 Answer

My RCA TV Model F27442 has no picture

is it snow on screen? if so tuner  problems. rca had recall on tuners on some models bad solder connections in tuner

Dec 03, 2008 | RCA 32V420T 32" TV

1 Answer

Sound pops and cracks on coax only.

While there are other possibilities, this is a problem which is commonly caused by bad solder connections that form in the tuner. When you're using the video sources the tuner is out of the picture (sorry, I couldn't resist a pun) so you don't see any problem. It's relatively easy to fix, but it means removing the tuner from the board inside, opening the tuner and resoldering the bad connections. This is a nice TV, so it would be worth getting an estimate for the repair. Because of the time involved, many technicians would rather simply pull the tuner and put in a replacement. See if you can find one who will repair the tuner instead. I always did when I was on the road, and it didn't really take that long. It saves the cost of an expensive part.

Apr 22, 2008 | Sony KV-36FS17 36" TV

1 Answer

Sharp v29j200s always blue on the screen

Sharps are known for bad tuners and cold solder joints.If you tap on tuner and picture comes back there is cold joints in tuner, If not most likley bad tuner. if the audio is there with blue screen it is the tuner definitly.good luck


Mar 25, 2008 | Orion1934 19" TV

1 Answer

No Picture, no Sound but menu still useable.

B+ voltage to run tuner missing = open resistor in power supply
Or bad tuner ? Did you try the A / V inputs on back of set? What
is the Model # ?

Jan 01, 2008 | Panasonic CT-36D32 36" TV

2 Answers

No sound and no picture for tv and cable option

  • your problem is due to
  • rf in socket loose or defective
  • loose contact near tuner or it is defective
  • supply absent to VIF OR TUNER section
  • print cut in VIF section.
  • hope this will help.

Oct 23, 2007 | Toshiba CF27F30 TV

1 Answer

Sony tv picture keeps flashing

You likely have bad solder connections around the tuner area. This model has a history of problems in that area or the tuner itself.

Aug 29, 2006 | Sony KV-32S35 32" TV

3 Answers

Picture Blinks for Four Minutes

Sorry to be the bearer of bad news but your tuner sounds like its intermittant. Only way to fix it is to replace the tuner or send it out for an overhaul.. Now this is onlty if when you say the set blinks the picture stays but turns snowy and wavy or does the set blank off and on like its turning on and off. If thats the case could be a picture tube problem or a HV shutdown because of a vert fault or a driver problem in the Horizontal curcuit.

Apr 09, 2006 | Sony KV-32S45 32" TV

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