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Have model F25190SE, old 1992 tv, Chassis CTC177AC. No signal coming in from rf connector, television all snowy. Can use the rca connections, still has very fine lines in picture. I've replaced the rf connector still not working. Suggestions?

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Cristal and IC to be replaced and solderings on all grounds in the tuner unit. maybe costly for a tv of that age, for the fine lines there are 2 ajustements on the back of the tv set, one is focus and the other one is sceen, that ajustement is too high , just turn the ajustement counterclockwise. the tv will become darker

Posted on Jun 30, 2009

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How do you connect AKAI model # PDP4290 to cable ?


You will need a cable box/set-top box with this TV. Contact your cable TV provider for this.
It does not have a direct RF connection, only AV connections.
For Cable TV support you can use
  • Composite video (single RCA connector)
  • SVideo (round 4 pin connector)
  • Component Connectors (3 RCA connecters red/green/blu)

Component will give you the highest quality signal (as long has the cable box supports this connection) You will also need to connect the Audio connectors (red/white RCA) from the cable box to the TV as well.

The full PDF manual for your TV can be found here: http://www.managemylife.com/mmh/lis_pdf/OWNM/L0502572.pdf

I hope this helps,
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Mar 11, 2011 | Televison & Video

1 Answer

Where is the coaxial for model number 57hc85 serial no 26101140 chassis no tac 506 we cannot connect a signal at all we bought a modulator rf but it's asking for asking us to connect 1 into the tv but...


After some research http://www.tacp.toshiba.com/tacpassets-images/models/51hc85/docs/51hc85_om_e.pdf There is no coaxial input for this tv. Also as far as the RF Modulator you unfortunatly are trying to use that incorrectly. The RF Modulator is used to convert the RCA or Red Yellow White cables down to Coaxile, not vice versa. However if you have an old VCR or better yet a cable box you would want to hook up the cable box then enter the TV using one of the RCA jacks, HDMI Jacks, or other inputs such as Svid. But easy enough if you have a vcr you can access cable through that as well, and make sure the tv is sat to the correct channel or input to access the VCR or other item.

Feb 04, 2011 | Toshiba 42H81 42" Rear Projection...

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I would like to know if I can connect a HDMI cable from My tv model WS-65315 to a Direct TV HD receiver?


NO> If your TV supports and have HDMI connections and your HD receiver has an HDMI output then you should have no problem displaying Video. Just make sure you change the input signal of your television to HDMI input. After looking at the spec's of this model these are the following inputs you have. your best picture quaity would be to use componet cables instead, which can show full screen 1080i format, your television does not show at 1080p whis is what HDMI is known for.
Connectors
Rear Input Connectors S-Video x 2 - Component x 3 - Composite x 2 - DVI x 1 - RF x 2 - 1 x RS-232C - Audio (RCA) x 6

Front Input Connectors S-Video x 1 - Composite x 1 - Audio (RCA) x 1

Rear Output Connectors Composite x 1 - Audio (RCA) x 1 - RF x 1

Another good option is use to use a DVI to HMDI connector and hook it up this way. But note: you will have to use audio cables for the DVI input.

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1 Answer

Can not make the instalation betwen my tv and my dvd player


Most DVD players today have only RCA jacks for video and audio outputs, and don't have RF (channel 3 or 4) outputs. If your TV doesn't have AV input jacks (either too old or just not supplied on your model) you can't connect the DVD player directly. You'll need to get an RF converter to make the connection.

An RF converter costs about $15 and you'll find them where you can buy TVs. The converter takes the video and audio signals from the DVD player and creates a channel 3 or 4 output signal to your TV. If you don't have the cables already, make sure to get them too. You need a "dubbing cable" (RCA plugs on the ends, usually color-coded red, white and yellow) to connect the DVD player to the converter input jacks and an RF cable with "F connectors" on the ends for the output to the TV. Often the dubbing cable comes with a new DVD player, and the RF cable with the RF converter.

If this takes care of your connection troubles, please take a moment to give my solution a good rating. If I've missed something and can be of more help, please post a followup comment.

Mar 31, 2009 | Symphonic ST4819 19" TV

1 Answer

Coax that looks like RCA?


There is a distinct difference between coax and phono (rca) cabling. Coax, sometimes called RF, is a cable that carries audio and video at the same time, what we call a "modulated" signal. RF connections look as if they are threaded on the chassis of your TV or VCR etc. A lone "Phono" cable moves either audio or video, but not both at the same time, unlike coax.
If you are attempting to patch RF, your cable must be coax at both ends.  Hope that helps.

Jan 07, 2009 | Apex Digital AT2014DV 20 in. TV/DVD Combo

1 Answer

Snowy picture


Hi,

A snowy video indicates that your input signal is relatively weak. On the other hand, a noisy picture is when there are too much interference is super imposing on the video.

Snowy picture comes about when the signal coming in the RF INput (Ant/Cable) at the back of the unit is below a certain level. If this is the case, then it is not a problem with your TV but rather your aerial (antenna) or the cable from your provider. A way to verify that it is the ant/cable that is the cause and not a defective TV/tuner is to hook up an old VCR set to Ch. 3 or 4 to the RF IN of your TV using a short 75 ohms coaxial cable terminated at both ends with FP-5 connector. Play a known clear good tape and set your TV to Ch. 3 or 4 as the case maybe. If the picture is relatively clearer, better, then you have just confirmed that it is indeed your aerial or your cable (provider) that needs looking into. If on the other hand, the VCR signal is also snowy then chances are that you have a problem with the input stage of your TV including possibly your tuner.

For your aerial problem, antenna orientation or replacing with a higher gain antenna might help solve the snowy signal. For your cable problem, you have to call-in for service from your cable provider. If it is a TV problem, your best course would be to seek the services of a qualified TV technician since this involve electronic circuitry analysis, diagnosis and possible component replacements.

Additionally, you may try looking for any loose connection, loose grounding, broken wire or anything out of the ordinary in your connections.

Hope that this be of some help/idea. Pls post back how things turned out or should you need additional information.

Good luck and kind regards.

Nov 12, 2007 | RCA P52926 52" Rear Projection Television

1 Answer

How do we adjust our tv


You didn't mention anything about a cable box, VCR, etc. which might be connected. A snowy pic. means simply, inadequate signal is reaching the tuner, or the TV tuner itself is bad. If the first is so... check your cabling. If you have a VCR or DVD player hooked in between the cable box or outside antenna (whichever is the case), VCR (RF or ant.) out should go to the TV, VCR antenna (RF or ant.) input to the cable box. Also check the cable wire itself. If you look at the end of the cable, you should see a relatively thin center wire. This center conductor is what carries the signal. If it is missing, bent over, or too short to make contact with whatever it is connected to, you will have a very snowy pic. If you have a spare TV, connect it in place of your "new" TV, to narrow down the problem. Lastly, if all is well with hookup, cabling, etc. the TV might have a problem. Sometimes the tuner has a component defect, or the coaxial connector can be broken.

Sep 25, 2007 | Televison & Video

1 Answer

Need a compositeoutput (F connector) for the Startech SVID4101R


Hi, If your TV has only an F input connector, then chances are that it can only accept an RF (TV/Cable) signal. On the other hand your video/signal source puts out a composite video signal (presumably with audio likewise). What you need is an interface converter or more commonly called "RF Box or RF Modulator". This is a device that embeds your audio/video signal into an RF signal transmitting at a TV channel (commonly 3 or 4). These devices are commercially available. You have to specify whether stereo or mono and what color system is being used in your country such as NTSC, PAL, Secam etc. A fine example is RadioShack's RF Modulator Model: 15-2526, Catalog #: 15-2526 (http://www.radioshack.com). A work around is to use an old VCR where you can plug into its RCA Audio/Video INput your signal source and connect its RF out to the F connector of your TV via a short RG59 Coaxial cable terminated both ends with FP-5 connectors.. You have to select either 3 or 4 (as the case may be) in your TV and set your VCR to VTR operations. Hope this be of some help/idea. Post back how things turn up or should you need further information. Good luck and kind regards.

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1 Answer

Picture


Ther is a test you could do is you had the proper equipment, and that would be to inject a know good RF signal into the tunner F connector and chech tha point where the RF/IF is converted to audio and video, to determine if the proble is a bad tuner or not. The equipment is a VA62A Universal Video Analyzer. Its a great piece of equipment for this type of work. another thing you can do is get an RF Modulator from Radio shack and input a video and audio signal in to it and set it to channel 3 and connect the F connector to the TVs F connector. The set the TV to channel 3 you should see the picture and hear sound in channel 3. The VA62A is best because you can set it to emulate all of your channels from 1-87 standard TV and Cable TV. In any event a test needs to be run to see if the tunner is at fault.

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1 Answer

RCA F27650 27" TV - Snow Bursts


The model you listed, F27650 uses the new ATC113 series chassis, which is only about 3 years old. The ATC113 chassis is not known to have snowy issues, but if yours is then I would suspect that a solder joint is loose in the tuner. If your set is actually around 9 years old, then it might perhaps have the notorious CTC175 - CTC187 series chassis, which went snowy all the time due to cracked solder joints on the shield grounds around the tuner and microprocessor. In either case, some good quality resoldering should cure your trouble. If you have never done fine solder work on PC boards with small surface-mount parts, allow a qualified tech to handle it for you.

Aug 08, 2007 | RCA F27650 27" TV

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