Question about RCA F36668 36" TV

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Fuzzy picture 3 to 4 of my channels come in very fuzzy. Do I need a new tuner?

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Resolder grounds around tuner.

Posted on Aug 19, 2008


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I have a sony 27 Trinitron with tuner issues. the picture is fuzzy/snowy on most channels. I have inspected the cable coax and it is not an issue. the problem started shortly after an electrical storm. I...

The RF amplifier in the tuner has been damaged. You will need to replace the tuner. A suitable replacement tuner from a wrecked Sony tv would be you cheapest option.
Best regards Vintie

Oct 08, 2013 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

The picture quality is fuzzy at the lower left of the screen. Also, the DVD picture is off center. How can I adjust or reset both?

This indicates an Automatic Gain Control (AGC) problem often caused by a dried up capacitor. You will probably need a schematic to go much further. This could be a problem in the tuner, IF, or video amplifiers.

The following assumes you are sure the signal source is strong - try a VCR or other local one (channel 3/4, not the RCA jacks).

Most of the time the range of AGC is from 1 to 7 volts. If you can get a decent snow free picture with an external AGC source, then the tuner is probably OK.

May 21, 2010 | RCA D61W20 61" Rear Projection Television

2 Answers

Cable picture is fuzzy

Call your cable company as there might be a problem with the drop line or aerial coming into your house. now another thing is if you have a signal splitter( ex: 2-way, 3-way, 4-way) before the cable box, that could be degrading the signal as each input may drop the signal significantly. remeber, don't use too many splitters as they will make the signal faded/fuzzy. also, make sure all the connectors are clean and are not badly bent or the ends frayed. If you can see wire insulation from the cable line then it's no good.

Apr 05, 2010 | Insignia 42" LCD Flat-Panel HDTV

1 Answer

When using cable input video is good but sound has fuzzy static

Your TVs tuner tuned a little off frequency. It could be as simple as having cable box on where you have good picture but fuzzy sound, use the TVs remote to change the channel and then change it back to proper channel. If that doesn't fix you may have wrong tuning type selected in channel set up menu.

Oct 11, 2009 | Toshiba 27A30 27" TV

1 Answer

Fuzzy Picture

Fuzzy is a funny word. I never use it to describe a picture problem. That because fuzzy can go too many different ways. There is snowy fuzzy, blurry fuzzy, grainy fuzzy, and demodulated fuzzy. If the set goes out of focus intermittently that has something to do with the focus ciruitry. If it goes grainy that is a front end problem, usually tuner related. The other types of fuzzy are generally associated with problems in video processing some where. So, which is it?

Oh, and BTW that unit has three small picture tubes in it, one red, one blue, and one green. It doesn't have a 'bulb'.

Feb 24, 2009 | Mitsubishi WS-65869 65" Rear Projection...

1 Answer

Channels 3,4,5,6 no picture

i have seen this on our cable system at the shop. it could be the system of most likely the tuner in the unit is haveing issuses.

Mar 04, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

One channel fuzzy

Tis is an ongoing problem I seen increase alot over the past few months. From what I can gather, all the channels being broadcast over going from the analog to digital, there's no big suprise to anyone. However, the change from analog to digital is changing at a faster rate, so when you look at the TV some channels will be fine and others will have grey lines, fuzzy picture. The only solution-you need a TV with some kind of digital tuner. On the TV itself if the (TV has one) it will say "SD" or "ED" which stands for standard digital or enhanced digital.

Jan 25, 2008 | GE 27GT277 27" TV

2 Answers

Sanyo 27" Problem: Fuzzy Screen

sanyo does this alot it is either you need to replace your tuner or you have two resistors 220k ohm s that need to be replaced.this will fix your problem.if repair cost is cheaper to fix then buy a new one its up to on that one!

Dec 01, 2007 | Sanyo DS27910 27" TV

2 Answers

TV picture

The set you have has a bad tuner assembly. At this point most likely you would be better off getting a new TV set. Good Luck

Mar 30, 2007 | Mitsubishi CS-27309 27" TV

1 Answer

Bad Cable Input

Try using your RCA imput to see how the picture looks compared to the tuner picture,is possible your tuner imput is bad,make sure the conector is not loose,the overall picture should look different but not fuzzy all over,using a dvd picture thru the aux (rca)imput should show you the difference.If the conector is loose only it could be repaired but if it is solid the tuner might be bad and it will need to be replaced along with any board it might be mounted to.Let us know how it goes or if you need more information.

Oct 17, 2006 | Polaroid FLM-2632 Television

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